JP2012035964A - Safety device of passenger conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safety device of a passenger conveyor, capable of detecting a state of passengers on treads having high possibility of falling down, by estimating the state of the passengers on the treads in detail before the passengers fall down, and thereby capable of preventing the passengers on the treads from falling down beforehand.SOLUTION: The safety device of the passenger conveyor includes: the treads which are endlessly connected and circulated; a center-of-gravity detector for detecting a center-of-gravity of a load applied on upper surfaces of the treads using the number of passengers on the treads; and a cautioning device for arousing caution to the passengers on the treads, based on detection results of the center-of-gravity detector.

Description

  The present invention relates to a safety device for passenger conveyors.

  Conventional safety devices for passenger conveyors are known in which passenger detection means comprising a number of photoelectric switches are provided on the railings on both sides of the step. Such a passenger conveyor safety device estimates the state of passengers on the steps from the detection status of these passenger detection means. And when it is estimated that the passenger on a step is falling, it is comprised so that the driving | operation of a passenger conveyor may be stopped (for example, refer patent document 1).

JP 2005008326 A

As described above, the conventional passenger conveyor safety device disclosed in Patent Document 1 estimates the current state of the passenger on the step by optically detecting the posture of the passenger on the step. Therefore, only the state after the passenger falls on the step can be detected, and there is a problem that it is difficult to detect the state before the fall and prevent the fall beforehand.
In addition, there is a problem that when the passenger is crouching on the step or the passenger on the step is a small child with a short height, it may be erroneously detected that the passenger has fallen. is there.

The present invention has been made in order to solve such a problem, and a first object is to predict in detail the state of passengers on a step and to state that the passenger on the step is likely to fall. It is possible to detect a passenger conveyor safety device that can be detected before the passenger falls and can prevent the passenger from falling on the step.
In addition, a second object is to obtain a passenger conveyor safety device that can detect with high accuracy a state in which a passenger on a step is likely to fall and can reduce the frequency of erroneous detection. Is.

  In the safety device for a passenger conveyor according to the present invention, a step that is connected endlessly and circulates, and a center-of-gravity position detection unit that detects the position of the center of gravity of the load applied to the upper surface of the step by the passenger on the step; Based on the detection result of the center-of-gravity position detection means, a configuration is provided that includes alerting means for alerting the passenger on the step.

In the passenger conveyor safety device according to the present invention, the state of the passenger on the step is predicted in detail, and the state where the passenger on the step is likely to fall is detected before the passenger falls. And it is possible to prevent the passengers from falling on the steps.
In addition, it is possible to detect with high accuracy a state in which a passenger on the step is likely to fall down, and it is also possible to reduce the frequency of erroneous detection.

It is a figure which shows typically the whole structure of the safety device of the passenger conveyor which concerns on Embodiment 1 of this invention. It is a perspective view which shows the detailed structure of the step which concerns on Embodiment 1 of this invention. It is a figure explaining the standing position of the passenger on the step which concerns on Embodiment 1 of this invention. It is a figure explaining the position of the gravity center of the passenger corresponding to the standing position of the passenger on the step in FIG. 3 according to Embodiment 1 of the present invention. It is a figure which shows arrangement | positioning of each area | region when the upper surface of the step which concerns on Embodiment 1 of this invention is divided into an area | region. It is a figure which shows the example of the content of the alerting message with respect to the passenger of the step which concerns on Embodiment 1 of this invention. It is a flowchart which shows operation | movement of the passenger conveyor which concerns on Embodiment 1 of this invention.

Embodiment 1 FIG.
1 to 7 relate to Embodiment 1 of the present invention. FIG. 1 schematically shows the overall configuration of a passenger conveyor safety device.
In FIG. 1, 1 is a main frame that constitutes a basic framework of a passenger conveyor that conveys passengers between installed upper and lower floors. A step 2 connected endlessly is provided in the main frame 1 so as to be able to circulate. And a passenger gets on these steps 2 and moves between upper and lower floors. A railing 3 is erected on the left and right sides of the main frame 1. An endless moving handrail 4 that circulates in synchronization with the step 2 is provided on the outer periphery of the balustrade 3.

FIG. 2 shows a detailed configuration of each step.
Reference numeral 2 a denotes a tread plate constituting the upper surface of each step 2. Passengers who use the passenger conveyor board while standing on the tread board 2a. Moreover, 2b is a riser which forms the kicking-up part of the step 2 arrange | positioned at step shape. A demarcation line 2c (yellow caution mark) is provided on the left and right sides of the tread board 2a and the three edges on the counter riser 2b side. This demarcation line 2c is for urging passengers not to get their shoes caught between the skirt guard provided at the lower part of the adjacent step 2 or balustrade 3.

  A load sensor 5 for detecting a load applied to the upper surface of the tread 2a is attached to the tread 2a. The load sensors 5 are arranged so as to be positioned at substantially four corners of the area excluding the demarcation line 2c of the tread board 2a. Load data detected by these load sensors 5 is input to a determination device 6 provided in the step 2. This determination device 6 calculates the center of gravity of the load by the passenger on the step 2 based on the information on the load applied to the upper surface of the step board 2a detected by the load sensor 5, and specifies the position of the center of gravity. It is determined which area is located. The region on the tread board 2a will be described in detail later.

  FIGS. 3 and 4 explain the relationship between the position of the passenger on the step 2 and the center of gravity of the load applied to the step board 2a. First, in these drawings and FIG. 5 to be described later, the left side toward the drawing is referred to as the left hand, and the right side toward the drawing is referred to as the right hand. Further, the lower floor side of the steps 2 arranged in a staircase shape will be referred to as the lower side, and the upper floor side will be referred to as the upper side.

  When the passenger 7 is on the left hand side of the step 2 as shown in FIG. 3 (a), the center of gravity of the load applied to the upper surface of the step 2 is also indicated by the hatched portion in FIG. It is considered to be on the left hand side. Further, when the passenger 7 is on the right hand side of the step 2 as shown in (b) of FIG. 3, the load applied to the upper surface of the step 2 as shown by the hatched portion in (b) of FIG. The center of gravity also approaches the right-hand side. When the passenger 7 is riding on the lower side of the step 2 as shown in FIG. 3C, the load applied to the upper surface of the step 2 as shown by the hatched portion in FIG. The center of gravity will also approach the lower side.

  In this way, the position and posture of the passenger on the step 2 can be estimated from the center of gravity of the load applied to the upper surface of the step 2. And the determination apparatus 6 determines whether the position of the passenger estimated from this gravity center position is a position where there is a possibility of falling. This determination is performed by dividing the upper surface of the tread 2a into a plurality of regions and in which region the center of gravity is located. FIG. 5 shows the setting of the area on the upper surface of the tread board 2a.

  First, a region on the upper side of the upper surface of the tread plate 2a (on the side opposite to the riser 2b) from the edge of the tread plate 2a to the inside by a predetermined distance and excluding the region B described later is defined as a region A. When the center of gravity of the load by the passenger is in this area A, there is a high possibility that contact or tripping of the adjacent step 2 with the riser 2b will occur. Next, an area from the edge of the tread board 2a to the inside by a predetermined distance on both the left and right sides (right and left sides) of the upper surface of the tread board 2a, excluding the area C described later, is an area B. If there is a center of gravity of the load by the passenger in this area B, there is a possibility of being pinched by the skirt guard, leaning on the balustrade 3 or the moving handrail 4, and getting out of the body from the moving handrail 4.

  A region C on the lower side (the riser 2b side) on the upper surface of the tread 2a is defined as a region C from the edge of the tread 2a to the inside by a predetermined distance. When the center of gravity of the load by the passenger is in this region C, the passenger may step on the foot from the step 2 due to some cause. Finally, a region at the center of the upper surface of the tread 2a that is not included in any of the above regions A, B, and C is referred to as a region D. When the center of gravity of the load by the passenger is in this area D, the passenger is considered to be in the normal riding position / riding method.

  Based on the information on the load applied to the upper surface of the tread board 2a detected by the load sensor 5, the determination device 6 determines which area of the areas A to D on the tread board 2a the center of gravity of the load by the passenger is. Based on the determination result, when the center of gravity is in one of the regions A, B, and C and the passenger needs to be alerted, the lighting command and the message notification command are output.

  As shown in FIG. 2, warning lamps 8 are provided at the demarcation line 2c portions on both the left and right sides of the tread board 2a. The warning lamp 8 includes light emitting means such as a light emitting diode (LED), and alerts passengers on the step 2 by emitting light. The light emission operation of the warning lamp 8 is controlled by a warning lamp driving device 9 provided in the step 2. When the lighting command output from the determination device 6 is input to the warning lamp driving device 9, the warning lamp driving device 9 turns on the warning lamp 8.

Moreover, as shown in FIG. 1, the speaker 11 is installed in the vicinity of the entrance / exit provided in the longitudinal direction both ends of the passenger conveyor. The speaker 11 notifies a passenger on the step 2 of a predetermined voice message based on a command signal from the voice notification device 12.
The message notification command output from the determination device 6 is input to the voice notification device 12 via the communication device 10 provided in the step 2. This message notification command includes information on the region to which the position of the center of gravity of the load by the passenger belongs. Then, the voice notification device 12 causes the speaker 11 to notify the voice message corresponding to the area indicated by the input message notification command.

  FIG. 6 shows the correspondence between the area where the center of gravity of the load by the passenger is located and the voice message notified from the speaker 11. Message A corresponds to the case where the center of gravity is in region A. This message A is, for example, “There is a risk of tripping over a step. Please get in the center of the step.” The message B corresponds to the case where the center of gravity is in the region B. This message B is, for example, the content “It is dangerous to lean on the railing. Please get in the center of the step.” The message C corresponds to the case where the center of gravity is in the region C. This message C is, for example, the content “There is a risk of stepping off. Please get in the center of the step.” When the center of gravity is in the region D, it is not necessary to alert the passenger, and no message issue command is output from the determination device 6. Therefore, there is no message corresponding to this area D. In this way, the content of the voice message that needs to be notified is determined in advance for the situation assumed from the region where the center of gravity of the load by the passenger is located.

The flow diagram of FIG. 7 shows the operation of the safety device for the passenger conveyor.
First, in step S1, the determination device 6 of each step 2 calculates the center of gravity of the load by the passenger on the step 2 based on the information on the load on the upper surface of the step board 2a output from the load sensor 5, and determines the position of the center of gravity. taking measurement. Then, in subsequent step S2, it is determined in which region on the tread 2a this center of gravity is located.

  That is, in step S2, the determination device 6 checks whether or not the center of gravity obtained in step S1 is in the region A on the step 2. If it is confirmed in step S2 that the center of gravity is in the region A on the step 2, the process proceeds to step S3. In step S <b> 3, the determination device 6 outputs a message notification command including that the center of gravity is in the region A to the voice notification device 12 via the communication device 10. The voice alert device 12 that has received this message alert command issues a message A “There is a risk of tripping over the step. Please get in the center of the step” from the speaker 11 as an alert message corresponding to the area A. Let me know.

  On the other hand, when it is confirmed in step S2 that the center of gravity is not in the area A on the step 2, the process proceeds to step S4. In step S4, the determination device 6 confirms whether or not the center of gravity obtained in step S1 is in the region B on the step 2. If it is confirmed in step S4 that the center of gravity is in the region B on the step 2, the process proceeds to step S5. In step S <b> 5, the determination device 6 outputs a message notification command including that the center of gravity is in the region B to the voice notification device 12 via the communication device 10. The voice alerting device 12 that has received this message alerting command issues from the speaker 11 a message B “A risky approach to the railing. Let me know.

  If it is confirmed in step S4 that the center of gravity is not in the region B on the step 2, the process proceeds to step S6. In step S6, the determination device 6 checks whether or not the center of gravity obtained in step S1 is in the region C on the step 2. If it is confirmed in step S6 that the center of gravity is in the region C on the step 2, the process proceeds to step S7. In step S <b> 7, the determination device 6 outputs a message notification command including that the center of gravity is in the region C to the voice notification device 12 via the communication device 10. Upon receiving this message notification command, the voice notification device 12 issues a message C “There is a risk of stepping off. Please get in the center of the step.” From the speaker 11 as an alert message corresponding to the area C. Let me know.

  On the other hand, if it is confirmed in step S6 that the center of gravity is not in the region C on the step 2, the center of gravity of the load applied to the step 2 by the passenger is in the region D, or the passenger is in the step 2 It is considered that the vehicle is in any state of not riding. Therefore, it is not necessary to call attention such as issuing a voice message. Therefore, the operation returns to step S1, and the above operations are repeated.

  In steps S3, S5, and S7, after issuing a voice message for alerting that seems appropriate for the situation assumed from the position of the center of gravity, the process proceeds to step S8. In step S <b> 8, the determination device 6 outputs a lighting command to the warning lamp driving device 9 of the step 2. Receiving this lighting command, the warning lamp driving device 9 turns on the warning lamp 8 of the step 2 to alert the passenger on the step 2. Thus, a series of operation flow is completed.

  In the above, the load sensor 5 and the determination device 6 (partial functions thereof) constitute a gravity center position detecting means for detecting the position of the gravity center of the load applied to the upper surface of the step 2 by the passenger on the step 2. . In addition, the determination device 6 (some other functions), the warning lamp 8, the warning lamp driving device 9, the communication device 10, the speaker 11, and the voice notification device 12 are based on the detection result of the gravity center position detection means. An alerting means for alerting passengers on the step 2 is configured.

  The passenger conveyor safety device configured as described above predicts the passenger's state on the step in detail, and detects the state that the passenger on the step is likely to fall before the passenger falls. It is possible to prevent the passengers from falling on the steps. In addition, it is possible to reduce the frequency of false detection because no false detection occurs even when the passenger is crouching on the step or the passenger on the step is a small child with a short height. . Furthermore, not only the passenger can be prevented from falling, but also a passenger can be alerted to a person who is moving out of the handrail.

DESCRIPTION OF SYMBOLS 1 Main frame 2 Step 2a Step board 2b Riser 2c Demarcation line 3 Parapet 4 Moving handrail 5 Load sensor 6 Judgment device 7 Passenger 8 Warning lamp 9 Warning lamp drive device 10 Communication device 11 Speaker 12 Voice alert device

Claims (6)

Steps connected endlessly and circulated,
Centroid position detecting means for detecting the position of the centroid of the load applied to the upper surface of the step by the passenger on the step;
A safety device for a passenger conveyor, comprising: alerting means for alerting the passenger on the step based on a detection result of the center-of-gravity position detecting means.   The center-of-gravity position detection means includes load detection means for detecting a load applied to the upper surface of the step by a passenger on the step, and detects the position of the center of gravity based on a detection result of the load detection means. The safety device for a passenger conveyor according to claim 1.   The alerting means alerts the passenger on the step when the position of the center of gravity detected by the center-of-gravity position detecting unit is within a predetermined region set in advance on the upper surface of the step. The safety device for a passenger conveyor according to claim 1, wherein the safety device is a passenger conveyor.   4. The warning device according to claim 1, further comprising a warning lamp that is provided on the step and that is lit to alert the passenger on the step. Passenger conveyor safety device as described.   The said alerting means is provided with the audio | voice alerting | reporting means which alerts with respect to the said passenger on the said step by issuing a predetermined | prescribed voice message, The any one of Claim 1 to 4 characterized by the above-mentioned. Safety device for passenger conveyor as described in 1. The content of the voice message is determined in advance corresponding to each of a plurality of predetermined areas preset on the upper surface of the step,
6. The passenger conveyor safety device according to claim 5, wherein the voice notification means issues the voice message corresponding to the region to which the position of the center of gravity detected by the center of gravity position detection means belongs. .

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