JP7134155B2 - Step tread lift detection device and step tread lift detection system - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a step tread detection device and a step tread lift detection system for detecting lift of a step tread provided on an escalator.

An escalator includes a frame installed in a building structure and a plurality of endlessly connected steps provided in the frame and circulating. An endless chain is connected to the plurality of steps, and the plurality of steps circulate by rotating the chain. This step depends on external factors (for example, pebbles caught in the corrugated part of the footboard, deformation of the corrugated part of the footboard due to poor handling, and repeated stress due to people getting on it) and the installation environment (outdoors). At worksites, such as when rain falls on the treads and rust occurs), the treads on which people ride may rise.

Conventionally, as a method for inspecting the lift of a step board, there has been a detector (for example, a variable resistor and a variable resistor output from the variable resistor) that outputs a detection signal corresponding to the amount of lift of the step board, as disclosed in Patent Document 1. A method has been proposed in which a measuring device for inputting a detection signal is provided, and the lift amount of the tread of the step is detected based on the detection signal output from the detector.

JP 2018-24489 A

However, in the prior art, although the lift amount of the tread of the step is detected based on the detection signal output from the detector, it was not possible to indicate at which step the detected lift occurred.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a step tread lift detection device and a step tread lift detection system capable of detecting the tread lift of each step by dividing each step in order to solve the above-described inconvenience. .

In order to achieve the above object, the present invention provides a detection member that sequentially contacts the treads of a plurality of steps of an escalator, a displacement sensor that detects displacement of the detection member in a direction perpendicular to the treads, and a detection member together with the detection member. A camera is provided at a position where the front and rear treads that come into contact with are included in the imaging range at the same time, and the output of the displacement sensor and the output of the camera can be used to detect the lifting of the treads for each step.

According to the present invention, it is possible to provide a step tread lift detection device and a step tread lift detection system capable of detecting the lift of a tread board for each step by dividing each step.

1 is a schematic diagram showing an entire escalator according to an embodiment of the invention; FIG. Figure 3 is a schematic diagram showing the overall steps according to one embodiment of the invention; 1 is a diagram showing the appearance of a step board lifting detection device according to an embodiment of the present invention; FIG. FIG. 2 is a view showing the left side of the step board lifting detection device according to the embodiment of the present invention; FIG. 4 is a view showing the right side surface (inside the control unit case) of the step tread board lifting detection device according to the embodiment of the present invention; 1 is a diagram showing an installation state of a step board lifting detection device according to an embodiment of the present invention; FIG. FIG. 4 is a diagram showing an image captured by the step tread board lifting detection device according to the embodiment of the present invention; FIG. 4 is a diagram showing a method of separating steps based on an image captured by the step tread board lifting detection device according to the embodiment of the present invention; FIG. 4 is a sequence diagram showing a processing procedure of the step tread board lifting detection system according to the embodiment of the present invention;

An embodiment of a step board lifting detection device and a step board lifting detection system according to the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic diagram showing the entirety of an escalator 1 to which the present invention is directed. As shown in FIG. 1, an escalator 1 includes a frame 2 installed in a building structure, a control panel 3, a balustrade 4, a plurality of steps 5, a handrail 6, and a drive mechanism 7. ing.

The drive mechanism 7 is composed of an electric motor (not shown) and a speed reducer (not shown). Electric power is supplied from the control panel 3 to the electric motor (not shown). The operation of the electric motor (not shown) is controlled by the control panel 3 . A belt member (not shown) is wound around a driving pulley of an electric motor (not shown), and this belt member (not shown) is wound around a driven pulley of a speed reducer (not shown). Thereby, the rotational force of the electric motor (not shown) is transmitted to the speed reducer (not shown) via the belt member (not shown).

Furthermore, a transmission chain 8 is wound around a transmission sprocket of a speed reducer (not shown). This transmission chain 8 is wound around a drive sprocket 9 . Then, the driving force of the driving mechanism 7 is transmitted to the driving sprocket 9 via the transmission chain 8, and the driving sprocket 9 rotates.

A step chain 11 is wound around the drive sprocket 9 and the driven sprocket 10 . As the driving sprocket 9 rotates, the driven sprocket 10 and the step chain 11 rotate.

Further, the frame 2 is provided with a guide member (not shown), and the plurality of steps 5 are movably supported by the guide member (not shown). The plurality of steps 5 are endlessly connected via a step chain 11 . The plurality of steps 5 are guided by a guide member (not shown) attached to the frame 2 and circulate between the outward and return paths. Passengers are transported on step 5 that moves on the forward route side.

Next, step 5 for detecting the amount of lift of the treadle 5b by the step treadle lift detection device 12 will be described with reference to FIG. FIG. 2 is a schematic diagram showing step 5 as a whole.

The step 5 includes a frame body 5a and a footboard 5b on which a person sits. In addition, a demarcation line is provided on the outer edge of the footboard 5b as a warning to prevent the rider from getting on the boundary of the steps. In order to ensure high visibility, the demarcation line preferably uses a color (for example, yellow) that is significantly different in brightness from other areas of the tread. In the following description, the demarcation line is abbreviated as "demarcation". In FIG. 2, a demarcation 5c is shown on the outer edge of the tread 5b. The step plate 5b has a corrugated shape and is fixed to the frame body 5a by welding at a plurality of points.

Next, the appearance of the step tread lift detector 12 used to detect the amount of lift of the tread 5b for each step 5 will be described with reference to FIG. As shown in FIG. 3, the step tread board lift detection device 12 has a detection rod 12a, a control section 12b, and a main body section 12c.

The detection rod 12a is a detection member that sequentially contacts the treads 5b of the steps 5. As shown in FIG. The detection bar 12a follows the footboard 5b of the step 5 in accordance with the lifted state of the footboard 5b of the step 5, and is displaced in a direction perpendicular to the footboard 5b. A displacement sensor 12g, which is a means for detecting the lift amount of the footboard 5b of the step 5, is installed in the control section 12b. Similarly, a camera 12h is installed in the control section 12b. The installation position of the camera 12h is a position that simultaneously includes the detection rod 12a, the footboard 5b before contact with the detection rod 12a, and the footboard 5b after contact with the detection rod 12a in the imaging range. A detection rod 12a and a control portion 12b are fixed to the body portion 12c.

Next, a detection mechanism for detecting the lift amount of the step 5b of the step 5 of the step tread lift detector 12 will be described with reference to FIG. As shown in FIG. 4, the detection rod 12a is fixed to the tip of a movable arm 12d rotatably supported by a shaft 12e of the body portion 12c. The detection rod 12a rotates about the shaft 12e of the main body 12c in accordance with the state of the footboard 5b of the step 5, thereby displacing it in a direction perpendicular to the footboard, that is, up and down.

Further, the movable arm 12d is provided with a sensor light-receiving plate 12f, which is vertically displaced like the detection rod 12a. A laser beam 15 output from the displacement sensor 12g is applied to the sensor light-receiving plate 12f and reflected, and the displacement sensor 12g receives the reflected light to measure the distance from the displacement sensor 12g to the sensor light-receiving plate 12f. 5 can be calculated.

Next, the internal configuration of the control section 12b of the step tread board lift detection device 12 will be described with reference to FIG. As shown in FIG. 5, a displacement sensor 12g, a camera 12h, and various substrates 12i are provided in the control section 12b.

The displacement sensor 12g emits a laser beam 15 toward the sensor light receiving plate 12f, that is, downward, receives reflected light from the sensor light receiving plate 12f, and outputs the distance to the sensor light receiving plate 12f. Since the sensor light-receiving plate 12f moves up and down together with the detection rod 12a in accordance with the lifted state of the footboard 5b of step 5, the lift amount of the footboard 5b of step 5 can be calculated from the distance to the sensor light-receiving plate 12f.

The camera 12h is also fixed facing downward like the displacement sensor 12g. The fixed position of the camera 12h is a position that simultaneously includes the detection rod 12a, the footboard 5b before contact with the detection rod 12a, and the footboard 5b after contact with the detection rod 12a in the imaging range 12j. For example, the position of the camera 12h is set so as to image the detection rod 12a and the footboard 5b of the step 5 with the detection rod 12a as the center. By using such setting, it is possible to separate the steps 5 one by one from the positional relationship among the detection bar 12a, the tread 5b of the steps 5, and the demarcation 5c.

The various substrates 12i include a substrate that operates as an external output unit that associates the amount of displacement detected by the displacement sensor 12g (for example, the distance to the sensor light receiving plate 12f) with the imaging result of the camera 12h and outputs them to the outside.

Next, the installation state of the step tread board lift detection device 12 on the escalator 1 at the site will be described with reference to FIG. As shown in FIG. 6, when the step tread lift detection device 12 is installed in the escalator 1 on site, the main body 12c of the step tread lift detection device 12 is attached to the comb plate 13 of the upper platform by, for example, a magnet or double-sided tape. fixed. At this time, the step tread plate lift detection device 12 is installed so that the detection rod 12a touches the tread plate 5b of the step 5. As shown in FIG. In this state, the escalator 1 is operated, and the lifting amount of the footboard 5b is detected for each step 5. - 特許庁

Further, the step tread board lift detection device 12 is connected to the data processing device 16 via various substrates 12i so as to be communicable by wire or wirelessly. The data processing device 16 receives the displacement amount detected by the displacement sensor 12g and the imaging result by the camera 12h from the step tread board lifting detection device 12 in association with each other.

The data processing device 16 has a data processing unit that calculates the lifting amount of the footboard 5b in step 5 based on the received displacement amount. In addition, the data processing unit identifies the boundary of step 5 from the received imaging result, divides step 5 into individual steps, and calculates the lift amount of the step board for each step 5 based on the displacement amount. can be done. The identification of the boundary in this step 5 is performed by identifying the demarcation 5c. For example, if the brightness of the image captured by camera 12h shows a specific change pattern, the presence of demarcation 5c can be identified.

By connecting the step tread lift detection device 12 and the data processing device 16 in this manner, a step tread lift detection system that detects the lift amount of the tread plate 5b for each step 5 can be obtained.

Next, an image captured by the camera 12h in the installation state shown in FIG. 6 will be described with reference to FIG. First, the image captured by the camera 12h includes the image of the detection rod 12a. Then, if an image is captured while the detection rod 12a is in contact with the vicinity of the central portion of the step 5, the detection rod 12a is projected in the center, and the treads of the step 5 are displayed above and below it, as shown in FIG. 7(a). 5b is displayed. When the escalator 1 is operated in this state, the step 5 moves, and the demarcation 5c provided at the end of the step 5 is displayed below the detection rod 12a as shown in FIG. 7(b). When step 5 moves further, as shown in FIG. 7(c), demarcation 5c is displayed so as to overlap detection rod 12a. When the step 5 moves further, the demarcation 5c is displayed above the detection rod 12a. This series of flows is repeated each time step 5 moves.

Since it is important that the demarcation 5c overlaps the detection rod 12a, the step tread plate lift detection device 12 has a diameter of 30 mm for the detection rod 12a so that most of the demarcation 5c overlaps the total width of 40 mm. and That is, the sensing rod 12a has a size that partially covers the image of the demarcation 5c in the imaging range of the camera 12h. Also, the color of the detection rod 12a is preferably darker than that of the demarcation 5c. For example, the same color as the footboard 5b may be used.

Next, FIG. 8 will be used to describe the process of dividing step 5 from the camera 12h image for each image. As already explained with reference to FIGS. 7(a) to (d), when the step 5 moves, the positional relationship between the detection rod 12a, the footboard 5b of the step 5, and the demarcation 5c changes. Step 5 can be separated for each image depending on the positions of the images of the camera 12h.

Specifically, the moving image captured by the camera 12h is cut out into images for each frame, and the brightness of the entire image is calculated as the profile value. The calculated profile value becomes a graph 14 as shown in FIG. 8(d).

When the demarcation 5c is projected below the detection rod 12a as shown in FIG. 8(a), the profile value becomes higher than when the detection rod 12a and the tread 5b of the step 5 are projected. When the escalator 1 is operated in this state, the step 5 moves and the demarcation 5c comes to overlap the detection rod 12a as shown in FIG. 8(b). also lower. When step 5 moves further, as shown in FIG. 8(c), demarcation 5c is projected above the detection rod 12a, and the profile value increases again. By repeating this operation, graph 14 in FIG. 8(d) is obtained, and as shown in FIG. Thus, step 5 can be separated for each sheet.

Next, the processing procedure of the step tread plate lift detection system will be described with reference to FIG. As a preliminary preparation, the step tread board lift detection device 12 is fixed to the comb plate 13 of the upper platform of the escalator 1 with, for example, a magnet or double-sided tape. At this time, the step tread plate lift detection device 12 is installed so that the detection rod 12a touches the tread plate 5b of the step 5. As shown in FIG. After the installation is completed, the device is connected to a building power supply (not shown) or a battery (not shown), and a power switch (not shown) is operated to turn on the power of the step tread lift detection device 12 . After that, the data processing device 16 and the step tread lift detection device 12 are connected by wire or wirelessly, and necessary information such as local specifications is input. The information entered may include, for example, a product number identifying the escalator 1 . Also, the number and width of the steps 5 of the escalator 1 may be included.

After the preparation of the step board lifting detection system is completed, the operator performs a start operation on the step board lifting detection device 12 to operate the escalator 1 . After the escalator 1 has made at least one round or more, the escalator 1 is stopped, and the step tread board lifting detection device 12 is operated to finish.

As shown in FIG. 9, the step tread plate lift detection device 12 receives a start operation (S1), and starts recording a displacement amount and a moving image (S2). After that, the step tread plate lift detection device 12 receives an end operation (S3), ends the recording of the displacement amount and the moving image (S4), and outputs the displacement amount and the recording of the moving image to the data processing device 16 in association with each other. (S5), the process ends.

When the data processing device 16 acquires the displacement amount and the record of the moving image from the step tread lift detection device 12 in association with each other (S11), the data processing device 16 cuts out an image from the moving image (S12), and calculates a portion having a high profile value from the cut out image. (S12). The data processing device 16 detects a valley portion where the profile value temporarily decreases in the vicinity of the location where the profile value is high (S14), and divides step 5 for each sheet (S15).

The data processing device 16 calculates the lifting amount of each step board 5b in step 5 from the corresponding relationship between the division of step 5 and the amount of displacement (S16). If there is a step in which the floating amount exceeds the specified value (S17; Yes), the data processing device 16 outputs the corresponding step as an abnormal step (S18) and terminates the process. On the other hand, if there is no step in which the floating amount exceeds the specified value (S17; No), it is output that there is no abnormality (S19), and the process ends.

As described above, the step tread lift detection system of the present embodiment sequentially brings the detection bar 12a of the step tread lift detection device 12 into contact with the tread plates 5b of the steps 5 of the escalator 1 to measure the amount of displacement. , the camera 12h provided at a position where the detection rod 12a and the footboards 5b in front and behind the detection rod 12a are included in the imaging range at the same time. Then, the data processing device 16 identifies the demarcation 5c from the change in the brightness of the image, divides the step 5 for each step, and detects the lifting amount of the tread for each step.

Therefore, the worker can quickly confirm the state of the specified step 5 and perform maintenance work such as replacement of the step 5 without having to identify in which step the abnormality occurred. In addition, regardless of the presence or absence of an abnormality, the amount of lifting of the tread for each step can be accumulated and analyzed, and used to adjust the timing for maintenance.

In the present embodiment, the step tread lift detection system in which the step tread lift detection device 12 and the data processing device 16 are connected has been described as an example. 12, so that the device can operate alone.

In addition, in the present embodiment, the case where the detection rod 12a is used as a detection member has been described. member can be used. For example, a detection member in which a plurality of rollers are connected may be used.

In the present embodiment, the detection member is rotatably pivotally supported. Any configuration can be used, such as acquisition as a displacement amount.

Also, the camera 12h shown in this embodiment can be shared for other purposes. As an example, a step 5b can be marked to identify the step 5, and the step 5 can be identified by image recognition.

In the present embodiment, the amount of floating is detected in each step 5, and the amount of floating is evaluated to output the presence or absence of abnormality. It can also be implemented as a sensing configuration.

In addition, although the escalator 1 has been described in this embodiment, the lifting amount of the treads 5b in step 5 may be inspected for autolines (including oblique lines) installed in airports and the like. Further, the step tread plate lift detection device 12 is installed on the comb plate 13 of the upper platform, but it may be installed on the lower platform.

The present invention is not limited to the above-described embodiments and modifications, and other forms conceivable within the scope of the technical idea of the present invention can be applied as long as they do not deviate from the gist of the present invention. included within the scope of Further, various forms can be implemented without departing from the gist of the present invention. For example, each configuration and each process exemplified in each of the above-described embodiments and modifications may be appropriately integrated or separated according to the implementation form and processing efficiency.

DESCRIPTION OF SYMBOLS 1... Escalator, 2... Frame body, 3... Control panel, 4... Balustrade, 5... Step, 5a... Frame main body, 5b... Footboard, 5c... Hoax Application 6 Handrail 7 Drive mechanism 8 Transmission chain 9 Drive sprocket 10 Driven sprocket 11 Step chain 12 Step tread Uplift detection device 12a...detection rod 12b...control unit 12c...main body 12d...movable arm 12e...shaft 12f...sensor light receiving plate 12g... Displacement sensor 12h Camera 12i Various substrates 12j Imaging range 13 Comb plate 14 Graph 15 Laser light 16 Data processing device

Claims (10)

In an escalator having a plurality of endlessly connected steps that circulate and move, a step tread lift detection device for detecting the tread lift of the steps,
a detection member that sequentially contacts the treads of the plurality of steps;
a displacement sensor that detects displacement of the detection member in a direction perpendicular to the tread;
A step characterized by comprising a camera provided at a position where an imaging range simultaneously includes the detection member, the footboard before contact with the detection member, and the footboard after contact with the detection member. Tread lift detection device. 2. The step tread lift detection device according to claim 1, further comprising a data processing unit for calculating the lift amount of the step tread on the basis of the amount of displacement of said detection member detected by said displacement sensor. Boundaries of the steps are identified from the result of imaging by the camera, the steps are divided into individual steps, and the lifting amount of the tread for each step is calculated based on the amount of displacement of the detection member detected by the displacement sensor. 2. The step tread lift detection device according to claim 1, further comprising a data processing unit for detecting the step tread plate. A demarcation line of the steps is identified from the result of imaging by the camera, the steps are separated into individual steps, and the lift amount of the tread for each step is based on the amount of displacement of the detection member detected by the displacement sensor. 2. The step tread lift detecting device according to claim 1, further comprising a data processing unit for calculating . A demarcation line of the step is identified from the change pattern of brightness of the image captured by the camera, the step is divided into individual sheets, and the step 1 is based on the displacement amount of the detection member detected by the displacement sensor. 2. The step tread lift detection device according to claim 1, further comprising a data processing unit for calculating the lift amount of each tread. A demarcation line of the step is identified from the change pattern of brightness of the image captured by the camera, the step is divided into individual sheets, and the step 1 is based on the displacement amount of the detection member detected by the displacement sensor. It also has a data processing unit that calculates the lift amount of each tread,
2. The method according to claim 1, wherein the detection member has a dimension to partially cover the image of the demarcation line in the imaging range, and the change pattern is a temporary decrease in brightness of the image. The step tread plate lifting detection device described. 2. The step tread lift detection apparatus according to claim 1, further comprising an external output unit that associates the amount of displacement of said detection member detected by said displacement sensor with the result of image pickup by said camera and outputs them to the outside. a movable arm that supports the detection member;
a shaft that supports the movable arm so as to be movable in a direction perpendicular to the footboard;
the displacement sensor is fixed to the main body having the shaft and measures the distance to the movable arm;
8. The step tread lift detection device according to claim 1, wherein the camera is fixed to the main body and captures an image including an image of the detection member. The step tread lift detection device according to any one of claims 1 to 7, wherein the displacement sensor measures a sliding amount of the detection member slidably supported. In an escalator having a plurality of endlessly connected steps that circulate and move, a step tread lift detection system for detecting the tread lift of the steps,
a detection member that sequentially contacts the treads of the plurality of steps;
a displacement sensor that detects displacement of the detection member in a direction perpendicular to the tread;
a camera provided at a position where an imaging range simultaneously includes the detection member, the footboard before contact with the detection member, and the footboard after contact with the detection member;
Boundaries of the steps are identified from the result of imaging by the camera, the steps are divided into individual steps, and the lifting amount of the tread for each step is calculated based on the amount of displacement of the detection member detected by the displacement sensor. A step tread plate lifting detection system, comprising: a data processing unit that

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