JP6939937B1 - Passenger conveyor equipped with a passenger fall detection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a passenger conveyor provided with a passenger fall detection device capable of detecting a fall of a passenger without deteriorating the design. SOLUTION: A passenger conveyor 10 provided with a passenger fall detection device of the present invention has a step 11 that circulates and moves by a motor, a balustrade section 13 erected on both sides of a circuit around the step step, and the balustrade section. A handrail 12 that circulates on the upper part in synchronization with the step, a skirt guard 14 that is the lower edge of the balustrade portion and is installed on the peripheral circuit side of the step, and a passenger on the step that falls. A passenger conveyor equipped with a passenger fall detection device for detecting a above-mentioned It is a height detection sensor 20 that detects the height of an object on a step. [Selection diagram] Fig. 2

Description

The present invention relates to a passenger conveyor such as an escalator, which is provided with a passenger fall detection device that detects a fall when a passenger falls on a step and stops the escalator.

On passenger conveyors such as escalators and moving walkways, passengers may fall off the steps or be carried to the escalator while lying on the steps. Even if people around the rescuer try to rescue such a person in need of rescue quickly, it is difficult to rescue the escalator because the escalator keeps driving, and the rescuer himself has a risk of falling. Therefore, it is necessary to stop the escalator in advance in order to carry out rescue operations. The escalator is equipped with an emergency stop button, but since the emergency stop button is generally set at the entrance and exit of the escalator, it is difficult to operate the emergency stop button depending on the boarding position of the rescuer. Sometimes.

Therefore, in Patent Document 1, a floodlight capable of horizontally projecting light at the low and high positions of one of the balustrades erected on both sides of the step and a receiver at the low and high positions of the other balustrade are provided. It is arranged. A plurality of these floodlights and receivers are arranged along the longitudinal direction of the escalator. Then, regarding the paired high-position receiver and low-position receiver, if the light-receiving signal is not received from the low-position receiver even though the high-position receiver is receiving light, the passenger The escalator is stopped as if it had fallen.

Japanese Unexamined Patent Publication No. 2005-8326

However, if the balustrade is made of glass panel, the high-position floodlight and receiver can be seen by passengers, which greatly reduces the design of the escalator.

An object of the present invention is to provide a passenger conveyor provided with a passenger fall detection device capable of detecting a passenger's fall or the like without deteriorating the design.

The passenger conveyor provided with the passenger fall detection device of the present invention
Steps that circulate and move by motor,
The balustrades erected on both sides of the circuit around the tread and
A handrail that circulates on the balustrade in synchronization with the step,
A skirt guard installed on the peripheral circuit side of the step, which is the lower edge of the balustrade portion,
A passenger fall detection device that detects the fall of a passenger on the step, and
It is a passenger conveyor equipped with
The passenger fall detection device is a height detection sensor that is arranged on the skirt guard, spreads in a fan shape in a vertical plane toward the peripheral circuit of the step, and detects the height of an object on the step.

It is desirable that the height detection sensor be a range sensor.

It is desirable that the height detection sensor is installed in the skirt guard.

It is desirable that the height detection sensors are arranged so as to face each of the balustrades installed on both sides of the peripheral circuit of the step.

It is desirable that the height detection sensors are arranged at predetermined intervals along the circuit around the step.

When the height detection sensor detects that the height of the object on the step is low, the motor can be stopped.

When the height detection sensor detects that the height of an object on the step is low and a high object is detected on the steps before and after the step, the motor is not stopped. It can be configured.

The height detection sensor can stop the motor when it detects a state in which the height of the object on the step is low for a predetermined time or longer.

According to the passenger conveyor provided with the passenger fall detection device of the present invention, the passenger fall detection device is a height detection sensor and is arranged on a skirt guard installed at the lower edge of the balustrade portion. Therefore, it is difficult for passengers to see, and the design of the passenger conveyor is not deteriorated. Further, by adopting a range sensor as the height detection sensor, there is an advantage that the height of an object on the step can be detected by one sensor. In addition, the contour of the object can be obtained by detecting the height of the object passing continuously by the range sensor, and it can be determined whether the object is a luggage such as a suitcase or a passenger. The detection accuracy can be improved.

FIG. 1 is a perspective view of an escalator according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the escalator on the detection surface of the height detection sensor. FIG. 3 is a graph of measured values showing the height displacement of the step detected by the height detection sensor. FIG. 4 is a graph showing (a) a graph of measured values showing a height displacement showing a state in which a passenger is standing one step away from the step, and (b) a graph showing a corrected height excluding the step height displacement. Is. FIG. 5 is a graph showing (a) an actually measured value graph showing a height displacement indicating a state in which a passenger has fallen on a step, and (b) a graph showing a corrected height excluding the height displacement of the step.

Embodiments of the present invention will be described with reference to the drawings. In the following description, the escalator 10 connecting the upper floor 18 and the lower floor 19 will be taken as an example of the passenger conveyor, but the passenger conveyor may be a so-called moving walkway or the like.

As shown in FIG. 1, the escalator 10 according to the embodiment of the present invention includes a step 11 and a handrail 12 which are endlessly connected to connect the upper floor 18 and the lower floor 19. The step 11 can be rotated by a motor (not shown), and the handrail 12 also circulates and moves in synchronization with the step 11 by the motor. The motor is driven, stopped, controlled in the rotation direction, speed controlled, and the like by the control means of the escalator 10. As shown in FIGS. 1 and 2, balustrade portions 13 and 13 are erected on both sides of the circumferential circuit of the step 11, and a part of the circumferential circuit of the handrail 12 is the upper surface of the balustrade portion 13. ing.

The escalator 10 is provided with a skirt guard 14 on the step 11 side along the inner lower edges of the balustrades 13 and 13. The skirt guard 14 is a plate that prevents clothes, shoes, and the like from getting caught between the step 11 and the balustrade portion 13. As shown in FIG. 2, the skirt guard 14 can be a plate inclined from the balustrade portions 13 and 13 toward the step 11 side, and from the upper floor 18 to the lower floor 19 along the circumferential circuit of the step 11. It is provided.

In the present embodiment, the height detection sensor 20 is installed on the skirt guard 14 as a passenger fall detection device. As the height detection sensor 20, a range sensor such as a ToF (Time of Flight) sensor can be adopted. The ToF sensor rotates the light emitting part and the light receiving part of the laser light 21 in the predetermined detection surface 22 until the laser light 21 emitted from the light emitting part is reflected on the object and returns to the light receiving part. It is a sensor that measures the distance from the time and its rotation angle to the object. For example, when a reflective photoelectric sensor or the like is installed in a fan shape to form a passenger fall detection device, the presence or absence of the object 30 can be detected, but the distance and height cannot be detected, so the object 30 is near the photoelectric sensor. It is not possible to determine whether there is a tall object 30 at a distant position. Therefore, it is desired to adopt a range sensor such as a ToF sensor.

It is desirable that the height detection sensor 20 is installed in the skirt guard 14 so that it cannot be visually recognized from the outside in order to prevent the design of the escalator 10 from being deteriorated. By installing the height detection sensor 20 in the skirt guard 14, the height detection sensor 20 does not protrude from the skirt guard 14, so that it is possible to prevent clothes from being caught by the height detection sensor 20.

As shown in FIGS. 1 and 2, the height detection sensor 20 (range sensor) can be installed so that the detection surface 22 spreads in a fan shape in the vertical plane toward the step 11 side. When the height detection sensor 20 is installed in the skirt guard 14, a slit 15 can be provided in the skirt guard 14 as shown in FIG. 2 so that the laser beam 21 can pass through the slit 15. It is desirable that the slit 15 is closed with a transparent resin, glass, or the like so that clothes or the like will not be caught.

It is desirable that the height detection sensor 20 is installed so as to face the skirt guards 14 and 14 on both sides of the step 11. The reason is that if the passenger falls on the step 11 and leans against one of the skirt guards 14, the slit 15 is completely closed and the height detection sensor 20 can detect the height. This is because it disappears. Even in this case, passengers can be detected by installing the height detection sensor 20 in the other skirt guard 14.

FIG. 2 shows the escalator 10 in cross section on the detection surface 22. As shown in the figure, the height detection sensor 20 irradiates the laser beam 21 toward the step 11 side in a fan shape. Therefore, the height detection sensor 20 can obtain the contour of the object 30 on the step 11 from the angle of the irradiated laser beam 21 and the time until the laser beam returns to the light receiving portion. In the present embodiment, it is sufficient if the maximum height H of the object 30 can be measured. Therefore, if the maximum height H of the object 30 can be calculated and extracted from the contour of the obtained object 30 by the height detection sensor 20, the height is high. The detection sensor 20 transmits information on the maximum height H of the object 30 to the control means of the escalator 10. If the height detection sensor 20 can acquire only the contour information of the object 30, the maximum height H of the object 30 may be calculated by the control means of the escalator 10. Hereinafter, the height detection sensor 20 will be described as detecting the maximum height H of the object 30 on the step 11, but it is also assumed that the height H is calculated by the control means.

FIG. 3 shows the height detected by the height detection sensor 20 in the escalator 10 operated to orbit the step 11 upward, that is, to transport passengers from the lower floor 19 to the upper floor 18. It is a graph of the measured value of H. As shown in the figure, it can be seen that the height detection sensor 20 sequentially detects the step 11 that moves as the height H. By correcting the height displacement of the step 11, the height H detected by the height detection sensor 20 becomes zero.

FIG. 4A is a graph showing an actually measured value of the height H when the passenger 31 is boarded while standing on the step 11. In the figure, it can be seen that the other passengers 31 are on board by skipping the one-step step 11, and the height displacements by the passengers 31 and 31 are measured in addition to the height displacement of the step 11. FIG. 4B is a graph obtained by correcting the measured value of FIG. 4A by removing the height displacement of the step.

With reference to FIG. 4, it can be seen that an object 30 having a maximum height H to the extent that a person is standing is detected on the step 11. That is, the object 30 is a standing passenger 31 from the detected height H, and is not in a situation of falling. Therefore, in this case, the control means may continue to drive the motor as it is and operate the escalator 10.

FIG. 5A shows an actually measured value of the maximum height H in a state where the passenger 31 has fallen at the step 11. Similarly, FIG. 5B is a graph obtained by correcting the step 11 excluding the height displacement. With reference to the figure, an object 30 having a low maximum height H is detected over, for example, two steps of the step 11. In such a situation, the passenger 31 has fallen so as to straddle the two-step step 11. When the object 30 having a low maximum height H is detected in this way, the passenger 31 may have fallen, so it is desirable that the control means stop the operation of the escalator 10 by stopping the motor. .. Since there is a possibility of false detection, a speaker or the like may be used to call attention prior to the suspension of operation.

As a result, if the passenger 31 has fallen on the step 11, it can be detected early and the escalator 10 can be stopped. Therefore, it is possible to prevent the fallen passenger 31 from being carried by the step 11 in that state. Also, other passengers 31 and users can go to the rescue from the upper floor side or the lower floor side.

In order to prevent erroneous detection, the escalator 10 is operated when two or more of the height detection sensors 20 arranged along the peripheral circuit of the step 11 have the same height H detection result. May be stopped.

Similarly, in order to detect erroneous detection, the operation of the escalator 10 is stopped when the height H of the object 30 detected by the height detection sensor 20 continues to be lower than the predetermined height for a predetermined time or longer. You can also. That is, if the object 30 with a low height H detected by the height detection sensor 20 is the time for passing one step of the step 11, it is determined that the object is a cargo or the like, and the operation of the escalator 10 is not stopped. When the object 30 having a low height H passes by two or more steps of the step 11, it is considered that the passenger 31 has fallen, and the escalator 10 is stopped or the like. As a result, it is possible to determine whether the object 30 having a low height H is a fallen passenger 31 or a luggage, and it is possible to prevent erroneous detection.

Further, since an object such as a cargo having a low height H is usually located at the step 11 immediately before or after the passenger 31, when the height detecting sensor 20 detects the object 30 having a low height H, the object 30 has a low height H. When an object having a high height H is detected at the step 11 before and after that, the object 30 having a low height H may be regarded as a cargo carried by the passenger 31, and the operation of the escalator 10 may not be stopped. .. That is, if an object with a high height H is not detected by the height detection sensor 20 at the step 11 before and after the object 30 with a low height H is detected, it is determined to be abnormal and the escalator 10 is stopped. Just do it.

According to the present invention, since the height detection sensor 20 can be installed in the skirt guard 14, it is not necessary to change the design or structure of the escalator 10, and it is possible to prevent deterioration of the design.

The above description is for explaining the present invention, and should not be construed as limiting or limiting the scope of the invention described in the claims. In addition, the configuration of each part of the present invention is not limited to the above embodiment, and it goes without saying that various modifications can be made within the technical scope described in the claims.

For example, in the above embodiment, the height detection sensor 20 also detects the step 11 and corrects the height displacement of the step 11, but the step 11 does not fall within the detection range of the height detection sensor 20. You may do so.

In addition, a height detection sensor 20 is also installed at the entrance to observe and memorize the height H of the object 30 moving to the step 11 in advance over time, and the maximum height H of the object 30 is low on the way. If this happens, it may be determined that the object 30 (passenger) has fallen.

When the height detection sensor 20 is installed at the entrance, it is high to detect passengers pushing a stroller or shopping cart from the measured height H and make an announcement to avoid boarding the escalator 10. The height detection sensor 20 can also be used.

10 Escalator 11 Step 13 Parade 14 Skirt guard 20 Height detection sensor (passenger fall detection device)
30 Object 31 Passenger

Claims (5)

Steps that circulate and move by motor,
The balustrades erected on both sides of the circuit around the tread and
A handrail that circulates on the balustrade in synchronization with the step,
A skirt guard installed on the peripheral circuit side of the step, which is the lower edge of the balustrade portion,
A passenger fall detection device that detects the fall of a passenger on the step, and
It is a passenger conveyor equipped with
The passenger fall detection device, wherein arranged in the skirt guard, spreading like a fan in a vertical plane towards the periphery circuit of the rung, Ri height detection sensor der to detect the height of the object on the rung ,
When the height detection sensor detects that the height of the object on the step is low, the motor is stopped, but when it detects that the height of the object on the step is low, the step is stopped. When a high object is detected on the steps before and after the step, the motor is not stopped.
A passenger conveyor equipped with a passenger fall detection device. The height detection sensor is a range sensor.
A passenger conveyor provided with the passenger fall detection device according to claim 1. The height detection sensor is installed in the skirt guard.
A passenger conveyor provided with the passenger fall detection device according to claim 1 or 2. The height detection sensor is arranged so as to face each of the balustrades installed on both sides of the peripheral circuit of the step.
A passenger conveyor provided with the passenger fall detection device according to any one of claims 1 to 3. The height detection sensor is arranged at predetermined intervals along the circuit around the step.
A passenger conveyor provided with the passenger fall detection device according to any one of claims 1 to 4.

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