JP6610343B2 - Warning device and passenger conveyor - Google Patents

Description

  The present invention relates to a warning device that issues a warning regarding the use of a passenger conveyor, and a passenger conveyor having the warning device.

  Patent Documents 1 and 2 disclose a safety device that detects an object that approaches an inlet of a moving handrail of a passenger conveyor and issues a warning.

Japanese Patent No. 4844280 Japanese Patent No. 4844242

  The present invention provides a warning device capable of giving a warning regarding a manual part of a moving handrail of a passenger conveyor, and a passenger conveyor having the warning device.

The warning device of the present invention issues a warning regarding the use of a passenger conveyor.
Warning device
A moving handrail approach detecting unit for detecting a predetermined approach of an object to a nail part on the entrance side in a moving handrail of a passenger conveyor;
A warning part capable of performing a warning in a predetermined manner;
A control unit that causes a warning unit to issue a warning when a predetermined approach is detected by the moving handrail approach detection unit.

  The passenger conveyor of the present invention has the warning device of the present invention.

  According to the present invention, it is possible to detect a predetermined approach of an object to a nail portion on the entrance side of a moving handrail of a passenger conveyor, and perform a warning by a warning unit. Although there is a possibility that an object such as a user may be lifted when touching in the manual portion on the entrance side, in the present invention, a warning alert can be appropriately given before contact.

It is a schematic side view of the escalator in Embodiment 1. 3 is a schematic plan view of an escalator in Embodiment 1. FIG. It is a side view which shows arrangement | positioning of the handrail approach detection part and inlet approach detection part of the escalator in Embodiment 1. FIG. It is a top view which shows arrangement | positioning of the handrail approach detection part and inlet approach detection part of the escalator in Embodiment 1. FIG. It is a front view which shows arrangement | positioning of the handrail approach detection part and inlet approach detection part of the escalator in Embodiment 1. FIG. 3 is a diagram illustrating an electrical configuration of an escalator control device according to Embodiment 1. FIG. 4 is a flowchart illustrating handrail approach warning control by the escalator control device according to the first embodiment. 3 is a flowchart illustrating inlet approach warning control by the escalator control device according to the first embodiment.

(Specific Problems of the Invention and Summary of the Invention)
The escalator is equipped with a moving handrail (handrail) to be held by the user during boarding, but the person who is not on board is facing the nual part of the moving handrail around the doorway May approach unconsciously. In particular, in the nual part on the entrance side, there is a possibility that the nual part may lift when the user's body or the like comes into contact with it, and this needs to be prevented.

  In view of this, the present invention provides a warning device capable of detecting the warning of an approach of a moving handrail to an entrance-side manual portion and giving a warning, and a passenger conveyor having the warning device.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
1. Configuration FIG. 1 is a schematic side view of an escalator according to a first embodiment. FIG. 2 is a schematic plan view of the escalator in the first embodiment. FIG. 1 is a schematic side view at a cross-sectional position taken along line AA of FIG. The escalator 1 in the present embodiment includes an escalator body 10, a motor 20, a power supply device 30, a control device 40, a speaker 51, a handrail approach detection unit 61, and an inlet approach detection unit 62. The speaker 51 is an example of a warning unit of the warning device, and the control device 40 is an example of a control unit of the warning device. The warning device issues a warning regarding use such as alerting the use of the escalator 1.

  The escalator body 10 is installed in a state of being spanned between two floors F1 and F2 of a building. Moreover, the escalator main body 10 is arrange | positioned in the vicinity of the space connected to the floor below these floors F1 and F2. The escalator body 10 includes a plurality of steps 11 connected endlessly, a pair of left and right endless handrails 12 (moving handrails), and a power transmission mechanism that transmits the power of the motor 20 to the steps 11 and the handrails 12 ( (Not shown). The plurality of steps 11 and the handrail 12 are circulated by the power of the motor 20.

  The power supply device 30 supplies driving power to the motor 20. The power supply device 30 is configured by, for example, an inverter that can change the supply power based on control by the control device 40. The power supply device 30 is configured to output a signal indicating a current value (load current value) of power supplied to the motor 20 to the control device 40. Note that a load current value detection unit for the motor 20 may be provided outside the power supply device 30, and the control device 40 may directly acquire the load current value from the detection unit.

  The speaker 51 outputs sound based on the sound signal output from the control device 40. The speaker 51 is an example of a warning unit. The warning unit may be any device that can output a sound based on a sound signal. The speakers 51 are provided in the vicinity of the lifts 5 at both ends in the running direction (longitudinal direction) of the escalator 1. The speaker 51 is attached to the skirt guard 13, for example. In addition, the escalator 1 of this embodiment is comprised so that a running direction can be reversed. Therefore, each elevator 5 may be a ride entrance or a exit.

  3, 4, and 5 are a side view, a plan view, and a front view showing the arrangement of the handrail approach detection unit 61 and the inlet approach detection unit 62 of the escalator 1 in the first embodiment.

  Before describing the arrangement of the handrail approach detection unit 61 and the inlet approach detection unit 62, the structure of the handrail 12 and the like in the vicinity of the elevator 5 of the escalator 1 will be described first. On both ends in the longitudinal direction of the left and right handrails 12, there are formed nual portions 12 n that bend in a semicircular shape. An inlet guard 17 having an inlet 16 is disposed at the lower part of each manual portion 12n. The inlet guard 17 is provided at both ends in the longitudinal direction of the handrail accommodating space defined by the skirt guard 13 extending along the longitudinal direction of the escalator 1, the external side panel 14, and the deck cover 18. The inlet 16 is an opening for introducing the handrail 12 into the handrail housing space or discharging the handrail 12 from the handrail housing space to the outside.

  The handrail approach detection unit 61 is provided in each of the four inlet guards 17. Each handrail approach detection unit 61 is disposed at a position near the floor surface outside the width direction of the handrail 12 below the inlet guard 17. The handrail approach detection unit 61 detects the approach of an object to the manual part 12 n of the handrail 12. The object here includes a part of the human body. The handrail approach detection unit 61 outputs a handrail approach detection signal when the object approaches a position within a predetermined distance L with respect to the end of the handrail 12n in the handrail 12n in the longitudinal direction of the handrail. The handrail approach detection unit 61 includes, for example, a light projecting unit and a light receiving unit that receives reflected light of light projected from the light projecting unit, and reflects from a position within a predetermined distance L with respect to the light receiving unit. It can be configured by a photoelectric sensor that outputs a detection signal when receiving light.

  The detection region R1 of the handrail approach detection unit 61 is diagonally upward and diagonally inward in the width direction from the installation position near the floor surface on the outer side in the width direction of the handrail 12 toward the end of the handrail 12n in the longitudinal direction of the handrail. It extends to. The front end of the detection region R1 is located at a distance of a predetermined distance L in the handrail longitudinal direction from the end of the handrail 12n in the handrail longitudinal direction. The predetermined distance L is set to such a length that a user or the like can take a contact avoidance operation on the manual section 12n after the warning. The predetermined distance L is, for example, 200 mm to 500 mm. The detection region R1 gradually increases toward the distal end side, and has a width that is slightly smaller than the width of the handrail 12 at the distal end. The tip of the detection region R1 is located in a region R3 in which the handrail 12 is virtually extended in the longitudinal direction. The height from the floor surface at the tip of the detection region R2 is, for example, 250 mm. This height is about the height below the knee of an adult.

  The inlet approach detection unit 62 is disposed on the protruding portion 19 provided to protrude above the inlet guard 17 on the outer side in the width direction of the handrail 12. The inlet approach detection unit 62 detects the approach of an object to the inlet 16. The object here includes a part of the human body. When the object approaches to the same position as the end of the handrail 12n of the handrail 12n in the longitudinal direction of the handrail or the position closer to the inlet 16 (second predetermined approach), the inlet approach detection unit 62 An inlet approach detection signal is output. The inlet approach detection unit 62 can be configured by a photoelectric sensor as described above, for example.

  The detection region R2 of the inlet approach detection unit 62 is located at the height position where the inlet approach detection unit 62 is disposed on the outer side in the width direction of the handrail 12, toward the end of the handrail 12 in the longitudinal direction of the handrail 12n. It extends substantially parallel to the longitudinal direction and substantially horizontally. The tip of the detection region R2 is located at the same position as the end of the hand rail 12 in the longitudinal direction of the hand rail 12n. The detection region R2 gradually increases toward the tip side, and has a width that is slightly smaller than the width of the handrail 12 at the tip. The height of the detection region R2 from the floor is the same as the height at which the inlet approach detection unit 62 is disposed, and is, for example, 250 mm. This height is a height considering the approach of an infant or the like.

  FIG. 6 is a diagram illustrating an electrical configuration of the control device 40 of the escalator 1 according to the first embodiment.

  The control device 40 includes a control unit 41 and a storage unit 42. The control device 40 is configured using a programmable logic controller (PLC).

  The storage unit 42 stores programs and various data. The program includes a program for realizing various functions of the control device 40 of the present embodiment. The data includes warning audio data.

  The control unit 41 reads the program and data from the storage unit 42 and performs arithmetic processing based on the read program and data. Thereby, various functions in the control device 40 are realized.

  The control device 40 controls the operation of the escalator 1. For example, the control device 40 controls the power (current) supplied to the motor 20 by controlling the power supply device 30, thereby controlling the start, stop, travel speed, travel direction, and the like of the escalator 1.

  The control device 40 also receives signals from the handrail approach detection unit 61, the inlet approach detection unit 62, and the power supply device 30, and controls the output of warning sound from the speaker 51 based on the input signals. . When a warning condition to be described later is satisfied, the control unit 41 reads the warning voice data from the storage unit 42 to generate a voice signal, and outputs the voice signal to the speaker 51. Thereby, a warning sound is output from the speaker 51.

2. The warning control by the operation control device 40 will be described in more detail with reference to a flowchart.

  First, warning control for handrail approach will be described. FIG. 7 is a flowchart for explaining handrail approach warning control by the control device 40. The warning control according to this flowchart is performed in parallel with the operation control of the escalator 1 at a predetermined cycle during the operation of the escalator 1. The warning control in the flowchart of FIG. 7 is performed in parallel for each of the four handrail approach detection units 61.

  The control unit 41 of the control device 40 determines whether or not the elevator 5 in which the target handrail approach detection unit 61 is arranged is currently a boarding gate (S11). In this embodiment, since the traveling direction of the escalator 1 is configured to be reversible, the entrance and exit of the escalator 1 may be reversed. The lifting of the object by the manual portion 12n of the handrail 12 may occur only at the entrance. Therefore, in this step, it is determined whether or not the elevator 5 in which the target handrail approach detection unit 61 is arranged is currently a boarding gate.

  If the elevator 5 where the target handrail approach detection unit 61 is located is not currently the entrance (NO in S11), the control unit 41 of the control device 40 performs the determination in step S11 again. To do.

  When the elevator 5 in which the target handrail approach detection unit 61 is arranged is currently the entrance (YES in S11), the control unit 41 of the control device 40 indicates that the escalator 1 is in a predetermined congestion state. It is determined whether or not there is (S12). The predetermined congestion state is a state in which the user for getting on and off the escalator 1 is present in the escalator 1 in the vicinity of the manual portion 12n of the handrail 12 at a density higher than a predetermined density. For example, the predetermined congestion state means that the number of users having a boarding rate of 63% (63% of the nominal transportation capacity (the number of users that can be transported per hour)) is average over time during one hour. It is a state that is more congested than the crowded state when it is dispersed and present. The value of 63% is an example, and may be set appropriately according to the installation environment of the escalator 1 and the like. In addition, the user in a nominal transport capability is an average user whose weight is 48 kg, for example. The weight of 48 kg is an average weight in a situation where adult men, adult women, and children are mixed at a certain ratio.

  Here, when the escalator 1 is in the predetermined congestion state as described above, there are usually many users of the escalator 1 in the vicinity of the nail portion 12n on the handrail 12 on the entrance side. In such a case, it is difficult for a person to unintentionally approach the manual portion 12n. On the other hand, in such a congested state, a user who normally uses the escalator 1 tends to approach the manual portion 12n, and as a result, there is a possibility that a warning is generated wastefully. Therefore, in the present embodiment, it is determined whether or not the escalator 1 is in a predetermined congestion state, and when it is determined that the escalator 1 is in a predetermined congestion state, the handrail approach detection unit 61 sends a signal to the manual unit 12n. Even when a predetermined approach of an object is detected, no warning is given.

  Specifically, in the present embodiment, whether or not the vehicle 20 is in a predetermined congestion state is determined based on whether or not the load current value of the motor 20 is greater than or equal to a predetermined current value. The load current value of the motor 20 increases or decreases according to the number of passengers on the escalator 1. Therefore, based on the load current value of the motor 20, the degree of congestion in the vicinity of the escalator 1 and its elevator 5 can be grasped. For example, 100% of the boarding rate (100% of the nominal transportation capacity (the number of users that can be transported per hour)) is dispersed to the escalator 1 on average over a one hour period. When the load current value at the time of driving in the state of boarding is 100%, the current value of 63% is set as a predetermined current value.

  When the escalator 1 is in a predetermined congestion state (YES in S12), the control unit 41 of the control device 40 performs the determination in step S11.

  When the escalator 1 is not in the predetermined congestion state (NO in S12), the control unit 41 of the control device 40 determines whether a handrail approach detection signal is received from the handrail approach detection unit 61 (S13).

  When the handrail approach detection signal is not received (NO in S13), the control unit 41 of the control device 40 performs the determination in step S11.

  When the handrail approach detection signal is received (YES in S13), the control unit 41 of the control device 40 determines whether or not the duration of the handrail approach detection signal is equal to or longer than a predetermined time (S14). The predetermined time is, for example, 3 seconds. During operation of the escalator 1, when a normal user uses the escalator 1, there is a possibility of passing through the detection region R1 of the handrail approach detection unit 61. In this case, the passing time is a moment of 1 second or less. Is something. Therefore, the handrail approach detection signal is output from the handrail approach detection unit 61 continuously for a longer period of time because a person who is not supposed to use the escalator 1 unconsciously sends it to the manual part 12n of the handrail 12. It may be approaching. Therefore, in this embodiment, for example, 3 seconds is set as the predetermined time. Note that 3 seconds is an example, and other times may be used as long as detection at the time of use by a normal user can be appropriately excluded.

  When the duration of the handrail approach detection signal is equal to or longer than the predetermined time (YES in S14), the control unit 41 of the control device 40 causes the speaker 51 to output a warning sound. (S15). The content of the warning is, for example, the content “Do not stop near the handrail”.

  Next, warning control for approaching an inlet will be described. FIG. 8 is a flowchart for explaining the inlet approach warning control by the control device 40. The warning control according to this flowchart is performed in parallel with the operation control of the escalator 1 at a predetermined cycle during the operation of the escalator 1. Further, the warning control in the flowchart of FIG. 8 is performed in parallel for each of the four inlet approach detection units 62.

  The control unit 41 of the control device 40 determines whether or not the elevator 5 in which the target inlet approach detection unit 62 is disposed is currently a descending exit (S21). In this embodiment, since the traveling direction of the escalator 1 is configured to be reversible as described above, the entrance and the exit of the escalator 1 may be reversed. Then, there is a possibility that the drawing of the object into the inlet 16 occurs only on the exit side. Therefore, in this step, it is determined whether or not the elevator 5 in which the target inlet approach detection unit 62 is currently located is an exit.

  When the elevator 5 in which the target inlet approach detection unit 62 is disposed is not currently an exit (NO in S21), the control unit 41 of the control device 40 executes the determination in step S21 again. .

  When the elevator 5 where the target inlet approach detection unit 62 is arranged is currently a descending exit (YES in S21), the controller 41 of the control device 40 indicates that the escalator 1 is in a predetermined congestion state. It is determined whether or not (S22). The predetermined congestion state is a congestion state similar to that described in step S12.

  When the escalator 1 is in a predetermined congestion state (YES in S22), the control unit 41 of the control device 40 performs the determination in step S21.

  When the escalator 1 is not in the predetermined congestion state (NO in S22), the control unit 41 of the control device 40 determines whether an inlet approach detection signal has been received from the inlet approach detection unit 62 (S23).

  When the inlet approach detection signal has not been received (NO in S23), the control unit 41 of the control device 40 performs the determination in step S21.

  When the inlet approach detection signal is received (YES in S23), the control unit 41 of the control device 40 determines whether or not the duration time of the inlet approach detection signal is equal to or longer than a predetermined time (S24). The predetermined time is, for example, 3 seconds. During operation of the escalator 1, when a normal user uses the escalator 1, the leg tip or the like may pass through the detection region R2 of the inlet approach detection unit 62. In this case, the passing time is 1 It is instantaneous in seconds. Therefore, the reason why the inlet approach detection signal is output from the inlet approach detection unit 62 continuously for a longer time may be that a person other than the user of the escalator 1 is consciously approaching the inlet 16. . Therefore, in this embodiment, for example, 3 seconds is set as the predetermined time. Note that 3 seconds is an example, and other times may be used as long as detection at the time of use by a normal user can be appropriately excluded.

  When the duration time of the inlet approach detection signal is equal to or longer than the predetermined time (YES in S24), the control unit 41 of the control device 40 causes the speaker 51 to output a warning sound. (S25). The content of the warning is, for example, “Dangerous, please do not approach”.

3. Operation of the present embodiment According to the warning device of the present embodiment, when the escalator 1 is not in a predetermined congested state during operation of the escalator 1, the handrail 12 is within a predetermined distance L with respect to the nail portion 12n on the entrance side. When the approach is detected continuously for a predetermined time, a warning sound “Do not stop near the handrail” is output from the speaker 51. Therefore, it is possible to appropriately warn a user or the like who has unknowingly approached the nail portion 12n on the handrail 12 before contacting the nual portion 12n. Thereby, the possibility of lifting an object such as a user by the nail portion 12n on the entrance side of the handrail 12 can be reduced.

  Further, the warning is issued when the approach to the nail part 12n on the entrance side is detected continuously for a predetermined time, so that a normal use user has passed through the vicinity of the nual part 12n instantaneously. If only, no warning is given. Therefore, it is possible to prevent a useless warning from being performed.

  Further, when the escalator 1 is in a predetermined crowded state, the speaker 51 does not warn even when the handrail approach detection unit 61 detects a predetermined approach of an object to the nail portion 12n on the entrance side. . This prevents a useless warning from being performed.

  Further, whether or not the escalator 1 is in a predetermined congestion state is determined based on the load current value of the escalator driving motor 20 that changes according to the number of users. Therefore, it is possible to accurately determine the congestion state.

  Further, the approach to the nail portion 12n on the entrance side is detected when an object enters the region R3 in which the handrail 12 is virtually extended in the longitudinal direction. Therefore, it is possible to accurately detect the approach of the object to the nail portion 12n on the entrance side.

  In the present embodiment, when it is detected that the object has approached the same position as the end of the handrail longitudinal direction of the nail part 12n on the exit side or a position closer to the inlet 16 than that, a warning for approaching the inlet is issued. Done. Therefore, a warning can be appropriately given when the user or the like approaches the inlet 16.

  In the present embodiment, the traveling direction of the escalator 1 can be reversed. However, when the entrance and the exit are reversed due to the inversion of the traveling direction, this is detected by the control unit 41, and the hand on the entrance side is detected. Only rail approach detection can be performed, and only inlet approach detection can be performed on the exit side.

(Summary about embodiment)
(1) The warning device in the first embodiment issues a warning regarding the use of the escalator 1 (passenger conveyor).
Warning device
A handrail approach detection unit 61 (moving handrail approach detection unit) that detects a predetermined approach of an object to the nail part 12n on the entrance side of the handrail 12 (moving handrail) of the escalator 1 (passenger conveyor);
A speaker 51 (warning unit) capable of performing a warning by voice (a warning of a predetermined mode);
A control unit 41 that causes the speaker 51 (warning unit) to warn when a predetermined approach is detected by the handrail approach detection unit 61 (moving handrail approach detection unit).

  Accordingly, a predetermined approach of an object such as a user to the nail portion 12n on the entrance side of the handrail 12 of the escalator 1 can be detected, and a warning can be given by the speaker 51 by voice. There is a possibility that the user's object or the like may be lifted when the contact is made in the manual portion 12n on the entrance side. However, in this embodiment, a warning alert can be appropriately given before contact.

(2) In the warning device in Embodiment 1,
The control unit 41 causes the speaker 51 (warning unit) to warn when a predetermined approach is continuously detected for a predetermined time by the handrail approach detection unit 61 (moving handrail approach detection unit).

  As a result, when a predetermined approach of the object to the entrance-side manual portion 12n occurs instantaneously, for example, when a user or the like has just passed near the entrance-side manual portion 12n. There is no warning. Therefore, it is possible to prevent a useless warning from being performed.

(3) In the warning device in Embodiment 1,
Predetermined approach means that an object has approached within a predetermined distance L with respect to the end of the handrail 12n on the entrance side in the longitudinal direction of the handrail.

  Thus, a warning is notified only when an object approaches within a predetermined distance L with respect to the end of the handrail longitudinal portion 12n on the entrance side. Therefore, it is possible to prevent a useless warning from being performed.

(4) In the warning device in Embodiment 1,
When the escalator 1 (passenger conveyor) is in a predetermined congested state, the control unit 41 is connected to the speaker 51 (warning unit) even when a predetermined approach is detected by the handrail approach detection unit 61 (moving handrail approach detection unit). ) Is not warned.

  This prevents a useless warning from being performed.

(5) In the warning device in Embodiment 1,
When the load current value of the motor 20 that drives the escalator 1 (passenger conveyor) is equal to or greater than a predetermined current value, the control unit 41 determines that the escalator 1 (passenger conveyor) is in a predetermined congestion state.

  The load current value of the motor 20 that drives the escalator 1 changes according to the number of users on the escalator 1. Therefore, it can be accurately determined whether or not the escalator 1 and the vicinity of the entrance are congested.

(6) In the warning device in Embodiment 1,
The handrail approach detection unit 61 (moving handrail approach detection unit) detects a predetermined approach in a region in which the handrail 12 (moving handrail) is virtually extended in the longitudinal direction.

  Thereby, the predetermined approach to the nail portion 12n on the entrance side is detected only within the extended region. Therefore, a warning can be given by accurately detecting a predetermined approach.

(7) In the warning device in Embodiment 1,
The traveling direction of the escalator 1 (passenger conveyor) can be reversed.
The handrail approach detection unit 61 (moving handrail approach detection unit) is provided corresponding to each of the lift ports 5 at both ends in the traveling direction of the escalator 1 (passenger conveyor).
The control unit 41 determines whether or not a predetermined approach has been detected based on the detection result of the handrail approach detection unit 61 (moving handrail approach detection unit) on the elevator door 5 side that is the entrance, and becomes the exit. The detection result of the handrail approach detection unit 61 (moving handrail approach detection unit) on the side of the lift opening 5 is ignored.

  There is a possibility that the lift will occur at the nail portion 12n on the entrance side, but the lift does not occur at the nail portion 12n on the exit side. Therefore, based on the detection result of the handrail approach detection unit 61 on the entrance side, the presence or absence of a predetermined approach is determined, and the detection result of the handrail approach detection unit 61 on the exit side is ignored. Thereby, it is prevented that a useless warning is performed on the exit side.

(8) In the warning device in Embodiment 1,
The warning device further includes an inlet approach detection unit 62 that detects a second predetermined approach of the object to the inlet 16 on the exit side of the handrail 12 (moving handrail).
The control unit 41 causes the speaker 51 (warning unit) to perform a warning when the second predetermined approach is detected by the inlet approach detection unit 62.

  Thereby, it is possible to detect a second predetermined approach of an object such as a user to the inlet 16 on the exit side and issue a warning.

(9) In the warning device in Embodiment 1,
The second predetermined approach is that the object has approached the same position as the end of the handrail 12n on the exit side of the handrail 12 (moving handrail) or the position closer to the inlet 16 than the end in the handrail longitudinal direction.

  As a result, the warning is notified only when approaching the same position as the end of the handrail longitudinal direction of the nail portion 12n on the exit side or a position closer to the inlet 16 than that. Therefore, it is possible to prevent a useless warning from being performed.

(10) In the warning device according to the first embodiment,
The traveling direction of the escalator 1 (passenger conveyor) can be reversed.
The inlet approach detection unit 62 is provided so as to correspond to each of the lift ports 5 at both ends in the traveling direction of the escalator 1 (passenger conveyor).
The control unit 41 determines whether or not a predetermined approach has been detected based on the detection result of the inlet approach detection unit 62 on the side of the lift 5 serving as the exit, and the inlet on the side of the lift 5 serving as the entrance. The detection result of the approach detection unit 62 is ignored.

  Although there is a possibility that an object will be caught in the inlet 16 on the exit side, there is no possibility that an object will be caught in the inlet 16 on the entrance side. Therefore, the presence or absence of a predetermined approach is determined based on the detection result of the entrance approach detection unit 62 on the exit side, and the detection result of the entrance approach detection unit 62 on the entrance side is ignored. This prevents a useless warning from being performed.

(11) In the warning device according to the first embodiment,
The passenger conveyor is an escalator 1 that is spanned between two different floors where lower floors exist and is arranged in the vicinity of a space that leads to floors below these floors.

  When the escalator 1 is spanned between two different floors and is arranged in the vicinity of a space connected to a floor below these floors, an object caused by contact with the nail portion 12n on the entrance side It is unfavorable from the viewpoint of safety that the lifting occurs. In the present embodiment, it is possible to appropriately issue a warning warning before contacting the nail portion 12n on the entrance side.

(12) In the first embodiment,
An escalator 1 (passenger conveyor) having the warning device in (1) to (11) is provided.

(Other embodiments)
The said embodiment demonstrated the case where the passenger conveyor was the escalator 1 spanned diagonally between different floors. However, the present invention is also applicable when the passenger conveyor is a passenger conveyor such as a so-called moving sidewalk disposed horizontally or diagonally on one floor.

  In the said embodiment, the photoelectric sensor was illustrated as the handrail approach detection part 61 and the inlet approach detection part 62. FIG. However, the handrail approach detection unit 61 and the inlet approach detection unit 62 may be anything as long as they can output a detection signal based on the approach distance. For example, the handrail approach detection unit 61 and the inlet approach detection unit 62 may be sensors that detect approach using radio waves or sound waves. In addition, a camera is arranged near the elevator 5 and the handrail approach detection unit 61 detects a predetermined approach of an object to the manual unit 12n by analyzing an image captured by the camera. Also good.

  In the embodiment, the speaker 51 that gives a warning by voice is exemplified as the warning unit. However, the warning unit may give a warning by means other than voice. For example, the warning unit may issue a warning by outputting light such as blinking light. The warning unit may give a warning by blowing wind on an object such as a person. Further, the warning unit may issue a warning with a buzzer sound or the like instead of or in addition to the warning in the language by voice.

  In the said embodiment, since the traveling direction of the escalator 1 (passenger conveyor) can be reversed, the handrail approach detection part 61 and the inlet approach detection part 62 are made to respond | correspond to each of the lift 5 of the longitudinal direction both ends of a passenger conveyor. Is provided. However, in a passenger conveyor that is not supposed to reverse the traveling direction, a handrail approach detection unit 61 is provided only on one elevator port 5 side, and an inlet approach detection unit 62 is provided only on the other elevator port 5 side. Just do it.

  When the traveling direction of the passenger conveyor is configured to be reversible as in the above-described embodiment, each of the inlet guards 17 at both ends in the longitudinal direction of the passenger conveyor is provided with a sensor having a variable detection area length. When the traveling direction is reversed, the length of the detection area is set to the length for handrail approach detection on one of the lifts 5 so that it functions as a handrail approach detection unit. On the 5th side, the length of the detection area may be set to the length for detecting the inlet approach so as to function as an inlet approach detection unit.

  In the embodiment, the control unit 41 determines whether or not the vehicle is in a predetermined congestion state based on the load current value of the motor 20. However, the control unit 41 may determine whether or not it is in a predetermined congestion state by a method other than this. For example, a camera is arranged in the vicinity of the elevator 5 and the control unit 41 exists within a predetermined range near the elevator 5 by analyzing the image captured by the camera to determine whether or not the camera is in a predetermined congestion state. It is also possible to count the number of persons who perform the determination and determine whether or not a predetermined congestion state is present based on the counted number of persons. In addition, for example, a load sensor that detects the load of the object on the launching plate is disposed on the landing plate of the lift opening 5, and the number of persons existing within a predetermined range near the lift opening 5 is determined based on the detected load. Counting may be performed to determine whether or not the vehicle is in a predetermined congestion state based on the counted number of people. In addition, when counting the number of persons existing within a predetermined range near the elevator 5 based on the detected load, it is determined that the user is an average user with a weight of 48 kg as described above.

  In the said embodiment, the control apparatus 40 is comprised using a programmable logic controller (PLC), and each function in the control apparatus 40 is implement | achieved by cooperation of hardware and software. However, each function in the control device 40 may be realized only by hardware (electronic circuit).

DESCRIPTION OF SYMBOLS 1 Escalator 5 Elevator 10 Escalator main body 11 Step 12 Hand rail 12n Manual part 13 Skirt guard 14 External side panel 18 Deck cover 16 Inlet 17 Inlet guard 19 Protrusion part 20 Motor 30 Power supply apparatus 40 Control apparatus 41 Control part 42 Storage part 51 Speaker 61 Handrail approach detection unit 62 Inlet approach detection unit R1 Detection region R2 of handrail approach detection unit Detection region R3 of inlet approach detection unit

Claims (11)

A warning device for warning about the use of a passenger conveyor,
A moving handrail approach detecting unit for detecting a predetermined approach of an object to a nail part on the entrance side in a moving handrail of a passenger conveyor;
A warning part capable of performing a warning in a predetermined manner;
A control unit that causes the warning unit to warn when the predetermined approach is detected by the moving handrail approach detection unit ,
The control unit, when the passenger conveyor is in a predetermined congestion state, even if the predetermined approach is detected by the moving handrail approach detection unit, do not warn the warning unit,
Warning device. The control unit causes the warning unit to give a warning when the passenger conveyor is not in a predetermined congestion state and the predetermined approach is continuously detected by the moving handrail approach detection unit for a predetermined time.
The warning device according to claim 1. The predetermined approach is that an object has approached within a predetermined distance with respect to the end of the moving handrail in the longitudinal direction on the entrance side.
The warning device according to claim 1 or 2. The control unit determines that the passenger conveyor is in a predetermined congestion state when a load current value of a motor that drives the passenger conveyor is equal to or greater than a predetermined current value.
The warning device according to any one of claims 1 to 3 . The moving handrail approach detection unit detects the predetermined approach in a region in which the moving handrail is virtually extended in the longitudinal direction.
The warning device according to any one of claims 1 to 4 . The traveling direction of the passenger conveyor can be reversed,
The moving handrail approach detection unit is provided corresponding to each of the elevator openings at both ends in the traveling direction of the passenger conveyor,
The control unit determines whether or not the predetermined approach is detected based on a detection result of the moving handrail approach detecting unit on the elevator door side serving as the entrance, and the moving handrail on the elevator port side serving as the exit gate. Ignore the detection result of the proximity detector,
The warning device according to any one of claims 1 to 5 . An inlet approach detection unit for detecting a second predetermined approach of the object to the inlet on the exit side of the moving handrail;
The control unit causes the warning unit to issue a warning when the second predetermined approach is detected by the inlet approach detection unit.
The warning device according to any one of claims 1 to 6 . The second predetermined approach is that the object approaches the same position as the moving handrail longitudinal direction end of the manual portion on the exit side of the moving handrail or a position closer to the inlet than that.
The warning device according to claim 7 . The traveling direction of the passenger conveyor can be reversed,
The inlet approach detection unit is provided to correspond to each of the elevator openings at both ends in the traveling direction of the passenger conveyor,
The control unit determines whether or not the second predetermined approach is detected based on the detection result of the inlet approach detection unit on the elevator opening side which is a descending exit, and Ignore the detection result of the inlet proximity detector,
The warning device according to claim 7 or 8 . The passenger conveyor is an escalator arranged between two different floors and disposed in the vicinity of a space that leads to a floor below these floors.
The warning device according to any one of claims 1 to 9 . The passenger conveyor which has a warning device of any one of Claims 1-10 .

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