KR101008781B1 - Safety system for an escalator - Google Patents

Abstract

The present invention is applicable to all escalators and provides an escalator safety device with higher detection accuracy than that of the prior art. The escalator safety device in embodiment of this invention measures the several sensor output value by the photoelectric sensor 111 arrange | positioned along the advancing direction of the escalator 1 at fixed sampling intervals, and light-shields in each position on an escalator. And a pattern generating unit 112 for generating the presence or absence of a time series shading pattern, and a passenger state outputting a passenger walking determination result 123a, a congestion determination result 125a, or a conduction state determination result 126a from the shading pattern. The determination unit 120, a warning unit 113 for warning a passenger based on the determination result, and a control unit 114 for performing driving control of the escalator based on the determination result are provided.

Description

Escalator safety device {SAFETY SYSTEM FOR AN ESCALATOR}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for an escalator for detecting a person's walking, running, backlash, congestion, falling state, and the like on an escalator.

In order to ensure the safety of passengers in a passenger conveyor, that is, an escalator, various safety devices have been conventionally proposed. For example, Japanese Unexamined Patent Publication No. 1997-301664 discloses a safety device configured as described above. That is, a surveillance camera is provided in the ceiling above the boarding deck in the escalator, and the whole image of the occupant who rides on the escalator by the said surveillance camera is image | photographed. The entire occupant image is imaged and sent to the control device. The control device judges the number of occupants, dangerous acts by the occupants and the like on the basis of the image, and notifies appropriate boarding guidance contents by voice based on the determination result.

Further, Japanese Laid-Open Patent Publication No. 2005-8326 discloses a safety device for stopping an escalator when a passenger is turned over in the escalator. Specifically, a photoelectric switch is disposed in each of the high position and the low position of the balustrade on both sides of the step of the escalator toward the moving direction of the step. The photoelectric switch detects a passenger's riding position. When the photoelectric switch in the low position detects the passenger but the state in which the high position photoelectric switch does not detect the passenger continues for a predetermined time, it is determined that the passenger is turned over and the escalator is stopped.

However, in the technique disclosed in Japanese Unexamined Patent Publication No. 1997-301664, it is necessary to attach a surveillance camera to a wall or the like around an escalator. Thus, the application of the technology depends on the building structure around the escalator. Therefore, there is a problem that the technique disclosed in Japanese Unexamined Patent Publication No. 1997-301664 is not applicable to all escalators.

In addition, the technique disclosed in Japanese Laid-Open Patent Publication No. 2005-8326 judges the conduction of the passenger only by the duration of shading in the photoelectric switch, and therefore, a case where false detection occurs is also considered.

This invention is made | formed in order to solve such a problem, and it aims at providing the escalator safety apparatus which is applicable to all the escalators, regardless of the building structure around an escalator, and whose detection accuracy is high compared with the past.

In order to achieve the above object, the present invention is configured as follows.

That is, the safety device of the escalator in 1st aspect of this invention is a safety device of the escalator which transports a passenger by circularly driving the stairs connected to an endless shape, Comprising: A plurality of sensors, a pattern generation part, and a passenger state determination part And a warning unit. The plurality of sensors are arranged along the driving direction of the stairs and detect the passengers on the stairs. The pattern generation unit generates and stores a passenger detection pattern by sampling a passenger detection output transmitted by the sensor at a predetermined interval along the movement of the passenger by driving the stairs, enumerating them in time series. The passenger state determination unit determines a state of movement of a passenger with respect to driving of the stairs from the detection pattern. The warning unit warns the passenger based on the determination result of the passenger's moving state.

The passenger state determining unit may further include: a moving speed determining unit obtaining a moving speed of the passenger from the detection pattern; a walking speed determining unit obtaining a walking speed of the passenger from the moving speed of the passenger and the driving speed of the stairs; It may be provided with a walking determination unit that determines the walking, running or backing of the passenger as the movement state from the speed, and the warning unit may warn the passenger based on the determination result of the walking determination unit.

In addition, the passenger state determining unit further includes a dismounting step speed determining unit that obtains a discharging step speed of a passenger in the vicinity of the discharging point based on the detection pattern obtained from a sensor disposed near the discharging point of the escalator. And a congestion determining unit that determines a congestion degree of the passenger in the vicinity of the loading dock by comparing the moving speed of the passenger with the speed of the getting off stairs, and the warning part is also provided to the passenger by the determination result of the congestion determining unit. You can also run an alert.

The controller may further include a control unit connected to the congestion degree determining unit to slow down the driving speed of the stairs when it is determined that a passenger is congested in the vicinity of the getting off site.

Further, when the passenger state determining unit determines the conduction pattern which is a pattern continuously detected in excess of the prescribed time by the sensor in which the detection state of the passenger exceeds the prescribed number in the detection pattern, the passenger is in the conduction state. It may be provided with a conduction determination unit for determining that the.

In addition, the sensor is arranged in two vertical steps up and down along the vertical direction, the pattern generating unit is the upper side pattern generation unit connected to the upper side sensor arranged on the upper side and the lower side pattern generation connected to the lower side sensor arranged on the lower end And the passenger state determination unit determines the lower-side conduction pattern continuously detected in excess of the prescribed time by the sensor in which the detection state of the passenger exceeds the prescribed number in the detection pattern obtained from the lower-side pattern generator. In addition, in the detection pattern obtained from the upper side pattern generating unit corresponding to the place where the lower side conduction pattern is detected, the non-detection state of the passenger is determined to determine the upper side conduction pattern continuously detected beyond the prescribed time. In this case, it may be configured to include a fall determination section that determines that the passenger is in the fall state.

The controller may further include a control unit connected to the conduction determination unit to stop the operation of the stairs when the conduction state of the passenger is detected near the exit of the escalator.

The warning part may also have a predicting part that predicts the time at which the passenger passes the warning position on the escalator from the walking speed of the passenger and executes the warning when the passenger passes the warning position.

The sensor may be configured as any one of a photoelectric sensor, an ultrasonic sensor, and a radio wave sensor.

Moreover, the said sensor consists of a photoelectric sensor, and two light paths which the light transmission part and the light receiving part of two adjacent pairs of photoelectric sensors arrange | positioned along the said drive direction of a staircase intersect near the center in the width direction of the said staircase. May be further configured to be shielded from light, and may further include a ride position detection unit that detects the left and right ride positions of the passengers on the stairs from the order in which the passengers block the two light paths.

According to the safety device of the escalator in 1st aspect of this invention, the detection pattern of a passenger is calculated | required in time series from the output of the sensor which detects the passenger of an escalator, the state of movement of the passenger on a stairs is judged from this detection pattern, It is configured to issue warnings to passengers based on movement status. Therefore, in the safety device of the escalator in the said 1st aspect, since the said sensor is arrange | positioned in the said escalator along the operation direction of a staircase, whether the safety device is attached or not depends on the building structure around the escalator like conventionally. There is no such thing as it is applicable to all escalators. In addition, the output of the sensor is not immediately used for the determination of the passenger's movement state, but a detection pattern composed of time series is generated from the output of the sensor, so that even if a detection error occurs in one or several sensors, the safety device is immediately Will not work. Accordingly, it is possible to provide an escalator safety device with high detection accuracy.

The safety device of the escalator which is embodiment of this invention is demonstrated below, referring drawings. In addition, in each figure, the same code | symbol is attached | subjected about the same or similar component part.

(Embodiment 1)

1 shows a configuration example of the escalator safety device 101 in the above embodiment. Here, the escalator 1 is provided with a ramp between the lower floor and the upper floor, and the step 1a is circulated by the drive source 1b along the ramp 1a connected in an endless state, thereby driving the stairs 1a. Transport passengers aboard). In addition, handrails 1c are erected on both sides of the stairs 1a.

The safety device 101 of the escalator 1 having such a configuration includes a sensor 111, a pattern generating unit 112, a passenger state determining unit 120, and a warning unit 113 as basic components. It is preferable to further provide the control part 114 with the same. The safety device 101 having such a configuration is a device that performs appropriate warning and driving control depending on the state of the passenger, for example, walking on the stairs 1a, traveling, backing, falling, congestion in the vicinity of the escalator getting off, and the like. Hereinafter, each component part mentioned above in the escalator safety apparatus 101 is demonstrated in detail.

The sensor 111 is arranged along the driving direction 1d of the stairs 1a, which is, for example, inclined upward in the ramp portion, and detects a passenger on the stairs 1a. In the example of FIG. 1, a photoelectric sensor is used as the sensor 111, and N photoelectric sensors from the sensor 111-1 to the sensor 111 -N correspond to the lower portion of the leg of the passenger on the stairs 1a. They are arranged in one line at equal intervals. In addition, in the example of FIG. 1, although the sensor 111 is arrange | positioned across the board | substrate from the boarding point 1e to the boarding point 1f, you may comprise so that the sensor 111 may be arrange | positioned only in a specific section among all the sections.

2 shows a state of the escalator 1 near the boarding point 1e as viewed from above. Each photoelectric sensor 111 is composed of a pair of a light transmitting portion 111a and a light receiving portion 111b, and the light transmitting portion 111a is disposed on one side, for example, on the left side toward the driving direction 1d with the stairs 1a therebetween. And the light receiving portion 111b on the other side, for example, on the right side. In this example, the pair of light transmitting portions 111a and light receiving portions 111b are arranged such that the optical path 111c between them becomes perpendicular to the driving direction 1d of the stairs 1a and is parallel to the horizontal direction. . The light transmitting portion 111a and the light receiving portion 111b are attached to the right and left handrails 1c, the left and right deck portions, and the right and left skirt guard portions. When a passenger exists on the optical path 111c, since the optical path 111c is blocked, the amount of light received at the light receiving portion 111b is reduced, and the output value of the photoelectric sensor 111 changes. Therefore, the presence or absence of light shielding in the position of each photoelectric sensor 111, ie, the presence of a passenger, can be detected from the output value of each photoelectric sensor 111. FIG.

The pattern generator 112 samples the passenger detection outputs sent by the sensors 111-1 to 111-N at regular intervals and enumerates them in time series as the passengers move by the stairs 1a. The detection pattern 200 is generated and stored. In this example, since the photoelectric sensor is used for the sensor 111, the said passenger detection pattern 200 becomes a light shielding pattern which shows the presence or absence of light shielding in the arrangement position of each sensor 111 in time series.

The said light-shielding pattern in the escalator 1 which the staircase 1a drives up and down from the boarding point 1e toward the boarding point 1f is visually shown in FIG. In FIG. 3, the sensors 111-1 to 111 -N are taken on the horizontal axis and the vertical axis, and when the photoelectric sensor 111 has shading, diagonal lines are applied. The shading pattern was visualized. As shown in the time t (k) and t (k + 1) in the figure, the light shielding pattern is added with the passage of time. For example, in the case where the passenger rides on and stops moving at the driving speed of the stairs 1a without moving the stairs 1a, the shading pattern has a pattern as shown by reference numeral 201 in FIG. do.

Furthermore, although the passengers have a certain width along the traveling direction 1d of the escalator, depending on the arrangement interval of each photoelectric sensor 111, a plurality of adjacent photoelectric sensors 111 at the same time at the same time It may be shaded. As a result, the light shielding pattern may be in a band shape having a certain width. In addition, even in the case of a full circle in which passengers board each step of the stairs 1a, since the light blocking and the non-shielding are repeated for each photoelectric sensor 111, it is natural that a light shielding pattern is generated.

In addition, since the passenger who is riding normally is driven at a constant speed from below to upward by the stairs 1a, the light shielding pattern 201 is observed as a band-shaped pattern having a constant inclination? 1 when viewed as a two-dimensional image. Will be.

In addition, the light shielding pattern 202 shown in FIG. 3 is a light shielding pattern when a passenger walks the stairs 1a in the driving direction 1d. The inclination θ2 in the light shielding pattern 202 is larger than the inclination θ1.

In addition, the light shielding pattern 203 shown in FIG. 3 is a light shielding pattern when a passenger runs the stairs 1a in the driving direction 1d. The inclination θ3 in the light shielding pattern 203 is larger than the inclination θ2.

In addition, the light shielding pattern 204 shown in FIG. 3 is a light shielding pattern when a passenger jumps down the stairs 1a at a speed exceeding the driving speed of the stairs 1a in a direction opposite to the driving direction 1d. to be.

Thus, in this embodiment, by providing the pattern generation part 112 and generating and storing the detection pattern 200 of a passenger, even if a detection error occurs in one or several sensors 111, the said detection is carried out. The error does not immediately lead to, for example, stopping the escalator. Therefore, in this embodiment, the escalator safety apparatus with high abnormality detection accuracy can be provided with stable detection accuracy.

The passenger state determining unit 120 determines the moving state of the passenger for the driving of the stairs 1a from the above-described detection pattern 200 generated by the pattern generator 112. In other words, as is clear from the light shielding patterns 201 to 204 described above, the detection pattern 200 is analyzed to determine the state of the passenger's movement with respect to the stairs 1a being driven in the driving direction 1d. can do. Here, the moving state of the passenger corresponds to each of the above-mentioned normal riding, walking, traveling, and backing states, the falling state of the passenger, and the degree of congestion of the passenger in the unloading area 1f of the escalator.

In order to determine such various kinds of passenger movement states, the passenger state determination unit 120 has a specific configuration as described below.

First, the configuration of the passenger state determination unit 120 for determining the above-described normal, walking, traveling, and backward passenger movement states will be described.

In this case, the passenger state determining unit 120 includes a moving speed determining unit 121, a walking speed determining unit 122, and a walking determining unit 123 shown in FIG. 1.

The movement speed determination unit 121 calculates a passenger's movement speed from the detection pattern 200 generated and stored in the pattern generation unit 112, and in this example, the light shielding pattern. Here, as an example, a method of calculating the travel speed of the passenger from the light shielding pattern 201 shown in FIG. 3 will be described. First, the inclination θ1 of the light shielding pattern 201 is obtained. As a method for obtaining the inclination, for example, the light shielding pattern 201 can be regarded as a set of points having two-dimensional coordinates, and the inclination θ1 can be obtained by linearly approximating a plurality of points by the least square method. Further, the light shielding pattern 201 is regarded as a two-value image, and an affine transformation is performed while changing the skew angle, and the sensor number direction from the sensor 111-1 to the sensor 111-N is performed. The inclination θ1 may be obtained from the skew angle at which the projected standard deviation becomes the minimum. That is, a well-known method may be used for the method of obtaining the inclination from the two-dimensional image.

When the optical axis spacing L (cm) of the photoelectric sensor 111 adjacent in the inclination (theta) 1 (degree) calculated | required from the above, the driving direction 1d, and the sampling interval T (sec) of the light shielding pattern are used, the passenger's moving speed V1 will become It is computed by following formula (1).

[Equation 1]

Travel speed V1 (cm / sec) = (L × tanθ1) ÷ T

The walking speed determining unit 122 obtains the walking speed V of the passenger from the moving speed V1 of the passenger and the driving speed V2 (cm / sec) of the stairs 1a. The operating speed V2 of the escalator 1 may be set in advance in accordance with the operating conditions of the escalator, or may be configured to provide a sensor for detecting the operating speed of the stairs 1a to detect the actual operating speed. The walking speed V can be calculated by the following equation. However, in the example of FIG. 3, the driving direction 1d of the stairs 1a is a rising direction, and makes the driving speed into a positive value.

[Equation 2]

Walking speed V (cm / sec) = V1-V2

The walking determination unit 123 determines the walking, running or backing of the passenger as the moving state from the walking speed V, and outputs the warning determination unit 113 as the walking determination result 123a. Specifically, the walking determination unit 123 determines the movement state by whether or not the walking speed V is within a predetermined range. For example, when the walking speed V is -10 or more and less than 50, it is determined that the vehicle is stopped.

Thus, by having the moving speed determination part 121, the walking speed determination part 122, and the walking determination part 123, the several steps of the photoelectric sensor 111 are used, and the precision of walking, running, or backing of a passenger is satisfactory. It can be determined as

Next, the structure of the passenger state determination part 120 for determining the congestion degree of the passenger in the unloading area 1f of the escalator as a passenger movement state is demonstrated.

In this case, the passenger state determining unit 120 has a dropping stairs speed determining unit 124 and a congestion degree determining unit 125 shown in FIG. 1.

The getting off stairs speed determining unit 124 is located near the getting off area 1f by the detection pattern 200 obtained from a sensor arranged near the getting off area 1f of the escalator 1 among the sensors 111-1 to 111-N. Find the speed of the passengers getting off the stairs. It demonstrates concretely using FIG. In FIG. 4, the example of the light shielding pattern obtained from the seven sensors of the sensor 111-N from the sensor 111- (N-6) of the vicinity of the unloading site 1f is shown. Moreover, the comb (comb part) of the getting off 1f exists in the boundary of the sensor 111- (N-3) and the sensor 111- (N-4).

When the bus stop 1f is not crowded, the passengers move smoothly at the bus stop 1f, and as shown by reference numeral 211 in FIG. 4, the inclination θ4 of the light shielding pattern before and after the comb passage is shown. Does not change. Here, the inclination? 4 is, for example, the inclination in the light shielding pattern in the normal riding. On the other hand, when the bus stop 1f is crowded, since a person stays at the bus stop 1f, the movement of the passenger after passing through the comb is delayed. Therefore, as shown by the reference numeral 212 in the figure, the inclination θ5 of the light shielding pattern after the comb passage is smaller than the inclination θ4 of the light shielding pattern before the passage of the comb.

Based on this phenomenon, the getting off stairs speed determining unit 124 obtains the average value of the inclination of the light shielding pattern after the comb passage of the plurality of passengers obtained from the plurality of sensors 111 arranged near the getting off area 1f, The average value 124a of the getting-down stairs speed | rate which is the speed of the passenger after passing through a comb is calculated by the method similar to the calculation method in the movement speed determination part 121. As shown in FIG. The average value 124a of the getting off stairs speed can be used as an index indicating the congestion degree of the getting off site 1f.

The congestion degree determining unit 125 compares the passenger's moving speed V1 obtained by the moving speed determining unit 121 with the average value 124a of the getting off stairs speed, and thus the degree of congestion of the passengers in the vicinity of the loading stop 1f. Determine. Specifically, the congestion degree determining unit 125 determines that the congestion is congested when, for example, the average value 124a of the getting off stairs speed is equal to or less than a preset threshold value, and otherwise, it is determined to be normal. The determination result is supplied to the warning unit 113 and the control unit 114 as the congestion determination result 125a.

In addition, in this example, although seven sensors 111 in the vicinity of the loading dock 1f were used for convenience in order to calculate | require the said getting off stairs speed as mentioned above, it cannot be overemphasized that the number is not limited. Therefore, the getting-down stair speed supplied from the getting-down stair speed determination part 124 to the congestion degree determination part 125 may not be an average value, either.

Thus, by having the getting-down stairs speed determination part 124 and the congestion degree determination part 125, the congestion degree of the getting off site 1f can be detected with good precision.

Next, the structure of the passenger state determination part 120 for determining the fall state of a passenger as a passenger movement state is demonstrated.

In this case, the passenger state determination unit 120 has a fall determination unit 126 shown in FIG.

The conduction determination unit 126 is a detection pattern 200 stored in the pattern generation unit 112, which is a pattern continuously detected in excess of the prescribed time by the sensor 111 exceeding the prescribed number from the light shielding pattern. When the fall pattern is determined, it is determined that the passenger is in the fall state.

It demonstrates concretely using FIG. In FIG. 5, reference numeral 221 denotes a light shielding pattern during normal boarding without passengers, and reference numeral 222 denotes conduction when the passengers are inverted during boarding and the conduction state continues to the stop 1f. An example of a pattern is shown. In the conduction state, the width occupied by the passenger's body in the driving direction 1d of the staircase 1a becomes larger than in the normal riding process, and as shown by the conduction pattern 222 which is the light shielding pattern of the entire city, The light shielding width 231 and the light shielding time 232 increase. Based on this phenomenon, in the light shielding pattern stored in the pattern generation unit 112, the conduction determination unit 126 has a light shielding width 231 equal to or greater than a preset value and a light shielding time 232 in advance. When the above pattern exists, it determines with the passenger's fall state, and if it does not, it determines with normal riding. Then, the conduction determination unit 126 transmits the conduction state determination result 126a to the warning unit 113 and the control unit 114.

By providing the fall determination unit 126 in this way, the fall state of the passenger can be detected with high accuracy.

The warning part 113 is a part which issues a warning to a passenger based on the determination result of the above-mentioned passenger's moving state. That is, the warning unit 113 includes a walking determination result 123a sent by the walking determination unit 123 provided to the passenger state determination unit 120 and a congestion determination result 125a sent by the congestion determination unit 125. ), And the warning signal 113a is output to the loudspeaker 130 based on at least one of the conduction state determination results 126a transmitted by the conduction determination unit 126. The speaker 130 is provided in the handrail 1c in the escalator 1, for example, and a warning signal 113a makes a sound for prompting the passenger. In addition, the warning information may be changed according to a dangerous state for passengers of "walking", "run", "reverse", "congestion", and "conduction state" which are the determination result of the passenger's movement state. In addition, the warning unit 113 can transmit the warning signal 113a to a place not only to the speaker 130 but also to a place involved in the occurrence of an abnormality such as a warning light or a management room of the escalator 1.

In the case where the moving speed V1 and the walking speed V are configured to be detected by using the sensor 111 provided below the installation position of the speaker 130 from the sensor 111-1, the passenger 130 The passenger's walking speed V can be detected prior to passing through). In addition, if it is assumed that the passenger's moving speed V1 is constant, it is possible to predict a time for the passenger to pass through the vicinity of the speaker 130 from the detected moving speed V1. Therefore, the warning unit 113 predicts the time at which the passenger passes the warning position on the escalator 1, in this example, the installation position of the speaker 130, from the passenger's walking speed V, and the passenger warns the warning. The predicting unit 113b may be provided to warn when passing the position, and may be configured to execute an announcement in accordance with the timing of the passenger passing through the speaker 130.

In this way, even when a large number of passengers are riding, it is possible to issue an appropriate warning to a particular passenger.

The control unit 114 is based on at least one of the congestion determination result 125a transmitted by the congestion determination unit 125 and the conduction state determination result 126a transmitted by the conduction determination unit 126. Control the operation of 1). Specifically, in the congestion determination unit 125, when it is determined that the passengers are congested in the vicinity of the bus stop 1f, the control unit 114 outputs a control signal 114a to the drive source 1b of the escalator 1. Thus, the driving speed of the stairs 1a is slowed down. Thereby, the accident by the congestion in the vicinity of the unloading site 1f can be prevented beforehand.

In the felling determination unit 126, when the fall state of the passenger is detected, in particular, when the fall state is detected in the vicinity of the getting off area 1f, the control unit 114 controls the control signal based on the fall state determination result 126a. 114a is output to the drive source 1b of the escalator 1, and operation | movement of the stairs 1a is stopped. As a result, it is possible to prevent the passenger who has turned over from being caught between the stairs 1a and the loading dock 1f, and also to prevent secondary disasters for passengers other than the conductor.

In addition, in this embodiment, although the structure which used the photoelectric sensor as the sensor 111 was demonstrated, the same effect as the above can be acquired also when an ultrasonic sensor or a radio wave sensor is used instead of the photoelectric sensor. In the structure using the photoelectric sensor 111, it is comprised by the pair of the light transmitting part 111a and the light receiving part 111b, and the light transmitting part 111a and the light receiving part 111b are the left and right handrails 1c and the left and right deck parts, respectively. It is attached to the skirt guard part of right and left. In the configuration using an ultrasonic sensor or a radio wave sensor, the light transmitting portion 111a may be an ultrasonic wave or radio wave transmitting unit and the light receiving unit 111b may be an ultrasonic wave or radio wave receiving unit instead.

Moreover, in the structure using the photoelectric sensor 111, since the optical path 111c is interrupted because a passenger exists on the optical path 111c, the presence or absence of passengers is utilized by using the thing in which the light reception amount of the light receiving part 111b is reduced and a sensor output value changes. Was detected. In the configuration using the ultrasonic sensor or the radio wave sensor, instead of this, the communication path connecting the transmitter and receiver in a straight line is cut off, so that the amount of reception of the ultrasonic wave or the radio wave in the receiver decreases and the sensor output value is changed. May be detected.

As shown in FIG. 2, the light transmitting portion 111a of the photoelectric sensor 111 is disposed at the left handrail 1c, the deck portion, or the skirt guard portion with respect to the driving direction 1d. 111b was arrange | positioned at the railing 1c of the right side, the deck part, or the skirt guard part with respect to the driving direction 1d. On the contrary, needless to say, the light transmitting portion 111a may be disposed on the right side with respect to the driving direction 1d, and the light receiving portion 111b may be disposed on the left side with respect to the driving direction 1d.

In addition, as shown in FIG. 6, the light transmitting portion 111a and the light receiving portion 111b of the photoelectric sensor 111 are together with the handrail 1c, the deck portion, or the skirt guard on the same side with respect to the driving direction 1d. It may be arrange | positioned to a part. In such a configuration, when there is no passenger, the length of the optical path is long like the optical path 111d, so that the light receiving amount of the light receiving portion 111b is small. On the other hand, when there is a passenger, the optical path length is shortened like the optical path 111e, so that the light receiving amount of the light receiving portion 111b is relatively increased. In such a configuration, such a phenomenon may be used to detect the presence of a passenger. In this case, the same effect as the case in the above-described embodiment can be obtained by reading out the case where the received amount of light is equal to or larger than the preset value.

As described above, an ultrasonic sensor or a radio wave sensor may be used instead of the photoelectric sensor.

In addition, instead of the light transmitting part 111a and the light receiving part 111b shown in FIG. 6, a general non-contact distance sensor may be disposed, and the presence or absence of a passenger may be detected according to the measured value of the distance sensor. In such a configuration, when the passenger is not present, the measured value of the distance sensor is almost equal to the step width, but when the passenger is present, the measured value is smaller than the step width. In addition, if the case where the measured value of the distance sensor is less than the preset threshold is read as having the light shielding, the same effect as in the case of the above-described embodiment can be obtained. Furthermore, when the measured value of the distance sensor is less than half of the stairs width, the passenger is considered to be riding on the left side of the stairs 1a, and when the measured value of the distance sensor is less than half of the stairs width and less than the stairs width, the passenger May assume that the passenger is riding on the right side of the stairs 1a, and may be configured to execute the processes described in the above-described embodiments in response to each of the passengers on the left and right sides.

(Embodiment 2)

In Fig. 7, an escalator safety device 102 according to Embodiment 2 of the present invention is shown. In the escalator safety apparatus 101 which concerns on Embodiment 1, several photoelectric sensors 111 were arrange | positioned in line only at the lower end corresponding to the lower part of the leg of a passenger along the driving direction 1d of the escalator 1. In contrast, in the escalator safety device 102 according to the second embodiment, in addition to the photoelectric sensor at the lower end, the photoelectric sensor is arranged at the upper end corresponding to the upper part of the leg of the passenger. The other structure except the structure demonstrated below is the same as the structure in Embodiment 1 mentioned above, and the description here is abbreviate | omitted. As the sensor 111, the photoelectric sensor is used as the example in the present embodiment as in the case of the first embodiment, but an ultrasonic sensor, a radio wave sensor, or the like can also be used as described above.

The lower sensor 111-L shown in FIG. 7 has the same structure as the photoelectric sensors 111-1 to 111-N shown in FIG. The photoelectric sensor 111 is positioned so that the upper sensor 111-U shown in FIG. 7 is positioned in the same column in the vertical direction with respect to the photoelectric sensors 111-1 to 111-N constituting the lower sensor 111-L. N-U1-111-UN) are arranged in a line.

The photoelectric sensors 111-1 to 111-N constituting the lower side sensor 111-L are connected to the lower side pattern generator 112-L, and the photoelectric sensors constituting the upper side sensor 111-U. Reference numerals 111-U1 to 111-UN are connected to the upper pattern generator 112-U. The lower pattern generator 112 -L and the upper pattern generator 112 -U have the same functions and operations as the pattern generator 112 described above. The lower pattern generator 112 -L and the upper pattern generator 112 -U are connected to the conduction determination unit 151 provided in the passenger state determination unit 150.

In addition, the passenger state determination part 150 in the escalator safety apparatus 102 of Embodiment 2 changes the conduction determination part 126 to the conduction determination part 151, except the escalator in Embodiment 1 is carried out. It has the same configuration as the passenger state determination unit 120 of the safety device 101. Although not shown in FIG. 7, the lower end pattern generator 112-L is connected to the moving speed determining unit 121 and the getting-down stair speed determining unit 124 provided in the passenger state determining unit 150. The detection pattern 200 is supplied from the lower pattern generator 112 -L.

The conduction determination unit 151 is a part that performs basically the same functions and operations as the conduction determination unit 126 described above, and is a detection pattern of the passenger from the lower side pattern generation unit 112 -L as the detection pattern 200. ) Is supplied, the detection pattern 240 is supplied from the upper pattern generator 112 -U. As described above, since the photoelectric sensor is used as the sensor 111 in the second embodiment, the detection patterns 200 and 240 become the light shielding pattern described in the first embodiment.

Therefore, the conduction determination unit 151 determines the conduction state of the passenger by the respective light shielding patterns supplied from the upper side pattern generation unit 112 -U and the lower side pattern generation unit 112 -L. Specifically, in the light shielding pattern supplied from the lower side pattern generation unit 112-L, the lower side conduction pattern continuously detected in excess of the prescribed time is detected by the photoelectric sensor whose passenger detection state exceeds the prescribed number. And in the light-shielding pattern obtained from the upper-side pattern generation unit 112-U corresponding to the place where the lower-side conduction pattern is detected, the upper side on which the undetected state of the passenger is continuously detected beyond the prescribed time. When the fall pattern is determined, it is determined that the passenger is in the fall state.

That is, in the conduction determination unit 151, the light shielding width 231 in the light shielding pattern supplied from the lower pattern generator 112-L in advance is similar to the lower conduction pattern 155 shown in FIG. It is equal to or greater than the set value, and the light shielding time 232 is equal to or greater than the preset value, and, like the upper conductive pattern 156 shown in FIG. In the pattern, it is determined that the passenger is in the conduction state in the case where there is no light shielding from the same time or substantially the same time as that of the lower end conduction pattern 155. In addition, in the case other than the light shielding pattern as shown in Fig. 8. In this case, the conduction determination unit 151 determines that it is a normal ride.

In accordance with this determination result, the conduction determination unit 151 transmits the conduction state determination result 151a to the warning unit 113 and the control unit 114. Then, the warning unit 113 and the control unit 114 execute the same processing as when the conduction state determination result 126a is supplied.

According to the escalator safety device 102 of Embodiment 2 comprised as mentioned above, the following effects can be acquired.

That is, in the first embodiment, for example, when a large bag is placed on the stairs 1a or when the passengers ride in a crowded manner, the light shielding width 231 and the light shielding time 232 of the photoelectric sensor 111 are set in advance. It becomes more than a value, and the case where the fall determination part 126 misdetects that it is a fall state of a passenger is considered. On the other hand, in the second embodiment, in the case of such a case, the light shielding pattern obtained from the upper end sensor 111-U corresponding to the period during which the lower end conduction pattern 155 is generated, that is, the passenger It shows the standing state, and does not misdetect it as a fall state. In addition, when the passenger is actually conducted, the passenger's body is positioned lower than the upper sensor 111-U, and the upper sensor 111-U is installed at such a position, so that the upper conduction pattern 156 is provided. This emerges. Thus, the conduction state of the passenger is accurately detected. As described above, the escalator safety device 102 of the second embodiment can further improve abnormality detection accuracy than the configuration of the first embodiment.

In addition, the content of the modification demonstrated in Embodiment 1 is applied also to the escalator safety apparatus 102 in this Embodiment 2. As shown in FIG.

(Embodiment 3)

9 shows an escalator safety device 103 according to Embodiment 3 of the present invention. The escalator safety apparatus 103 has newly provided the riding position detection part 160 compared with the escalator safety apparatus 101 of Embodiment 1 shown in FIG. The photoelectric sensors 111-1 to 111-N are connected to the boarding position detection unit 160, respectively, and the boarding position detection unit 160 is a total of two pairs of light transmitting and receiving units adjacent in the driving direction 1d. The light shielding of four optical paths is detected. The output of the boarding position detection unit 160 is connected to at least one of the pattern generator 112 and the warning unit 113 described above.

In addition, the structure in the escalator safety device 103 which concerns on Embodiment 3 other than the boarding position detection part 160 comprised in this way is the same as the structure of the escalator safety device 101 in Embodiment 1. As shown in FIG.

As the sensor 111, the photoelectric sensor is used as the example in the present embodiment as in the case of the first embodiment, but an ultrasonic sensor, a radio wave sensor, or the like can also be used as described above.

In Embodiment 1 and Embodiment 2, as shown in FIG. 2, in each photoelectric sensor 111, the light-transmitting part 111a which becomes a pair and the light-receiving part 111b which become another pair are the light-transmitting part 111a which becomes another pair. And the light receiving portion 111b, and are configured as one optical path 111c in each pair. On the other hand, in the escalator safety apparatus 103 of this Embodiment 3, as shown in FIG. 10, the light transmission part and the light reception part of at least 2 pair of photoelectric sensors form optical paths, and light-shielding is detected and it is on the stairs 1a. It is the structure which detects a passenger's position.

The configuration in which the ride position detection unit 160 detects the position of the passenger on the stairs 1a will be described in detail using two pairs of photoelectric sensors as an example.

As shown in FIG. 10, the light transmission part 161A in the light transmission part 161A and the light receiving part 161B and the light transmission part 162A and the light receiving part 162B which are adjacent in the driving direction 1d. The light from the light receiving unit 161B and the light receiving unit 162B is received, and the light starting from the light transmitting unit 162A is configured to be received by the light receiving unit 162B and the light receiving unit 161B. Therefore, the optical path formed in these two pairs of light transmitting parts and light receiving parts includes an optical path P from the light transmitting part 161A to the light receiving part 161B, an optical path Q from the light transmitting part 161A to the light receiving part 162B, There are four optical paths R from the light transmitting part 162A to the light receiving part 161B, and four optical paths S from the light transmitting part 162A to the light receiving part 162B. Here, the optical path Q and the optical path R intersect at the center of the staircase 1a in the width direction of the staircase 1a, that is, the direction perpendicular to the driving direction 1d. Therefore, the ride position detection unit 160 detects the presence or absence of light shielding of the optical paths P, Q, R, and S.

The riding position detection unit 160 performs a detection operation as follows.

When the stairs 1a are driven upward from the bottom of FIG. 10 along the driving direction 1d, the passengers move upward from the bottom of FIG. At this time, when the passengers ride on the left side of the stairs 1a, the light shielding order is shown in time series in the order of the optical paths P → Q → R → S. On the other hand, when the passenger is getting on the right side of the stairs 1a, the shielding order is in the order of the optical path P → R → Q → S. Therefore, the boarding position detection part 160 can detect that a passenger rides on the left side or the right side of the stairs 1a by irradiating the light shielding order from two adjacent light transmitting parts and light receiving parts in time series.

In addition, even if the stairs 1a are driving from the top to the bottom of FIG. 10, it goes without saying that the boarding position detection unit 160 can detect the left and right positions of the passengers in the same manner.

According to the escalator safety device 103 of this Embodiment 3 which has the boarding position detection part 160, the following effects can be acquired.

That is, the passenger position information 160a in the stairs 1a obtained by the ride position detection unit 160 is supplied to the pattern generation unit 112. Therefore, the pattern generator 112 can separate the passengers on the left side and the passengers on the right side on the stairs 1a to generate the light shielding pattern for each. That is, even if the passengers move at different speeds, for example, on the right side and the left side on the stairs 1a, and in the configuration of the first embodiment, even when the light shielding patterns sent from the pattern generator 112 overlap each other, this embodiment is carried out. According to the third aspect, the light shielding patterns of the left and right passengers can be easily separated. Therefore, in the movement speed determination part 121, the movement speed V1 of each passenger can be calculated | required with higher precision compared with the case of Embodiment 1. FIG.

In addition, by supplying the position information 160a to the warning unit 113, the warning unit 113 changes the warning broadcast in accordance with the passenger's left and right riding positions, or installs the speaker 130 to the left and right, thereby providing a passenger. Depending on the riding position of the speaker 130 to change the sound may be changed. Therefore, even when a large number of passengers are boarding, it is possible to issue an appropriate warning to a particular passenger.

In addition, the content of the modification demonstrated in Embodiment 1 is applied also to the escalator safety apparatus 103 in this Embodiment 3.

Moreover, arbitrary embodiments of the various embodiments mentioned above can be combined suitably, the escalator safety apparatus can be comprised, and the effect which each has can be shown.

The present invention has been sufficiently described in connection with the preferred embodiments with reference to the accompanying drawings, but various modifications and changes are apparent to those skilled in the art. Such changes or modifications are to be understood as included within the scope of the invention as defined without departing from the scope of the appended claims.

In addition, all of the content of the specification, drawing, claim, and summary of JP 2007-238012 filed on September 13, 2007 are integrated in this specification as a reference.

(Industrial availability)

INDUSTRIAL APPLICABILITY The present invention is applicable to a safety device of an escalator that detects a person's walking, running, backlashing, congestion, falling state, etc. on an escalator.

1 is a view showing the configuration of an escalator safety device according to Embodiment 1 of the present invention;

2 is a view of the boarding point of the escalator shown in FIG. 1 from above;

3 is a view for explaining a light shielding pattern generated by the pattern generation unit shown in FIG. 1;

4 is a view for explaining the operation of the getting-down stair speed determining unit shown in FIG. 1;

FIG. 5 is a view for explaining the operation of the conduction determination unit shown in FIG. 1; FIG.

6 is a view showing a modification of the escalator safety device shown in FIG.

7 is a diagram showing the configuration of an escalator safety device according to Embodiment 2 of the present invention;

8 is a view for explaining the operation of the conduction determination unit shown in FIG. 7;

9 is a diagram showing the configuration of an escalator safety device according to Embodiment 3 of the present invention;

FIG. 10 is a view for explaining the operation of the riding position detection unit shown in FIG. 9; FIG.

Explanation of symbols for the main parts of the drawings

1: Escalator 1a: Stairs

1f: bus stop

101 to 103: safety device of escalator

111: sensor 111-U: top side sensor

111-L: bottom sensor 112: pattern generator

112-U: upper pattern generator 112-L: lower pattern generator

113: warning unit 113b: prediction unit

114: control unit 120: passenger state determination unit

121: moving speed determiner 122: walking speed determiner

123: walking determining unit 124: getting off stairs speed determining unit

125: congestion determination unit 126: conduction determination unit

151: conduction determination unit 155: lower-side conduction pattern

156: top side conduction pattern 160: ride position detection unit

222: conduction pattern

Claims (10)

In the safety device of the escalator for transporting passengers by circular driving steplessly connected stairs, A plurality of sensors arranged along the driving direction of the stairs and detecting the passengers on the stairs; A pattern generation unit for generating and storing a passenger detection pattern by sampling a passenger detection output transmitted by the sensor at a predetermined interval in accordance with a movement of the passenger by driving the stairs, and enumerating them in time series; A passenger state determination unit that determines a moving state of the passenger with respect to the driving of the stairs from the detection pattern; A warning unit configured to issue a warning to the passenger based on a result of the determination of the passenger's movement state, The passenger state determining unit includes a moving speed determining unit for obtaining a moving speed of a passenger from the detection pattern; A walking speed determining unit for obtaining a walking speed of a passenger from the moving speed of the passenger and the driving speed of the stairs; It is provided with a walking determination part which judges the walking, running, or backward as the said moving state of a passenger from the said walking speed, The warning unit warns a passenger based on a determination result of the walking determination unit. Safety device on escalator. delete The method of claim 1, The passenger state determining unit includes a getting off stairs speed determining unit that obtains a stepping speed of a passenger in the vicinity of the getting off area by the detection pattern obtained from a sensor arranged near the getting off area of the escalator among the sensors; And a congestion degree determining unit that determines a congestion degree of the passenger in the vicinity of the getting off site by comparing the moving speed of the passenger with the getting off stairs speed, The warning unit warns a passenger also by a result of the determination of the congestion degree determination unit. Safety device on escalator. The method of claim 3, wherein It is further provided with a control part connected to the said congestion degree determination part and slowing down the driving speed of the said stairs when it is determined that a passenger is congested in the vicinity of the said getting off site. Safety device on escalator. The method of claim 1, The passenger state determining unit, in the detection pattern, determines that the passenger is in the conduction state when the detection pattern of the passenger determines the conduction pattern which is a pattern continuously detected in excess of the prescribed time by the sensor exceeding the prescribed number. With conduction determination part to judge Escalator safety device The method of claim 1, The sensor is arranged in two stages up and down along the vertical direction, the pattern generation unit has an upper side pattern generation unit connected to the upper side sensor arranged on the top and a lower side pattern generation unit connected to the bottom side sensor arranged at the bottom , In the detection pattern obtained from the lower side pattern generation unit, the passenger state determining unit determines the lower side conduction pattern continuously detected in excess of the prescribed time by the sensor in which the detected state of the passenger exceeds the prescribed number, and In the detection pattern obtained from the upper side pattern generation unit corresponding to the place where the lower side conduction pattern is detected, when the non-detection state of the passenger is continuously detected beyond the prescribed time, the upper end conduction pattern is determined. And a felling judging section for determining that the passenger is in the felling state. Safety device on escalator. The method according to claim 5 or 6, It is further provided with a control part connected to the said felling determination part, and stopping the operation of the said stairs, when the fall state of a passenger is detected in the vicinity of the exit of the said escalator. Safety device on escalator. The method according to claim 1 or 3, The warning unit has a predicting unit that predicts the time at which the passenger passes the warning position on the escalator from the walking speed of the passenger and executes a warning when the passenger passes the warning position. Safety device on escalator. The method of claim 1, The sensor is any one of a photoelectric sensor, an ultrasonic sensor and a radio wave sensor Safety device on escalator. The method of claim 1, The sensor is composed of a photoelectric sensor, and the light transmitting portion and the light receiving portion of two adjacent pairs of photoelectric sensors arranged along the driving direction of the stairs form two optical paths intersecting near the center in the width direction of the stairs. It is configured to be shielded by light, and further comprising a ride position detection unit for detecting the left and right riding position of the passenger on the stair from the order that the passengers shield the two light paths Safety device on escalator.

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