JP2016043827A - Safety bar warning device for cableway chair-type carriage and warning method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to improve safety of a passenger on a cableway chair-type carriage with small construction and at a low cost.SOLUTION: According to a safety bar warning device 100 for a cableway chair-type carriage 1 of the present invention, an image data of a carriage 1 is acquired by use of a camera terminal 4 located on a strut 5, whether a passenger is riding on the carriage 1 or not is determined on the basis of the image data of the carriage 1 picked up by an image analysis unit 15. When a passenger 3 is riding on the carriage 1, a position of a bar 2 is analyzed. Whether a position of the bar 2 is a predetermined position or not is determined, and when the position is not the predetermined position, state information and voice message, which give attention to the passenger 3, are outputted by an external speaker 6 of an attention unit 9 installed on the strut 5.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a safety bar warning device and a warning method for a chair type portable device for a cableway.

  Cable chair chairs (hereinafter simply referred to as “transporters”) installed at ski resorts, etc. are equipped with safety bars (hereinafter simply referred to as “bars”) to protect passenger safety. . In general, the bar is rotatably attached to the carrier and must be raised and lowered by the passenger himself. However, there are cases where the bar is not set correctly while riding, or even if the bar is not raised before getting off, even if a notice is posted on the column. May be in danger.

  In order to avoid the above-mentioned danger, by installing an air compression spring in the rotating part of the bar, once the bar is closed, it is not easily reopened until it gets off (for example, see Patent Document 1). ) And a carrier (see, for example, Patent Document 2) having a configuration in which a magnetic member is provided on each of a sheet and a bar of the carrier and the bars can be locked by a magnetic force by being engaged with each other.

JP 2009-57040 A Special table 2014-503413 gazette

  However, if a new device as disclosed in Patent Literature 1 or Patent Literature 2 is newly installed in each existing transporter, a large-scale renovation is required, which requires a great deal of cost.

  The subject of this invention is improving the safety | security of the passenger of the chair type carrier of a cableway with few construction and cost, without requiring large-scale repair etc.

In order to solve the above-mentioned problem, a safety bar warning device for a cable chair chair type carrier according to claim 1,
A camera terminal that images the chair-type carrier of the cableway;
Based on the image captured by the camera terminal, an image analysis unit that analyzes whether or not the position of the safety bar of the chair type transporter of the cableway is a predetermined position;
When the position of the safety bar is not a predetermined position, an alerting part that alerts passengers;
It is characterized by providing.

  The apparatus of the present invention analyzes the position of the safety bar from the image acquired from the camera terminal, and if the position of the safety bar is not a predetermined position, the apparatus is alerted to the passengers, so safety can be improved with less construction and cost. Can be planned.

It is a figure which shows the operation | movement image of a safety bar warning apparatus. It is a rear view of the chair type carrier of a two-seater cableway. It is a block diagram which shows the internal structure of a safety bar warning apparatus. It is a flowchart which shows the processing operation of this invention. It is a figure which shows the example of marking of a safety bar.

Hereinafter, with reference to FIGS. 1-5, embodiment of the safety bar warning apparatus of the chair type portable device of a cableway which concerns on this invention is described. The present invention is not limited to the illustrated example.
In the present embodiment, as illustrated in FIG. 1, a case where an image of the transporter 1 is captured from the rear in the traveling direction by the camera terminal 4 is described as an example.

As shown in FIG. 1, the transporter 1 is suspended by a transport wire rope 10 supported by support columns 5 provided at predetermined intervals. In the present embodiment, it is assumed that there are a plurality of columns 5 (5a, 5b,...) From the stop boarding position A to the stop landing position B.
As shown in FIG. 1 (a), the safety bar warning device 100 includes a camera terminal 4 installed on a column 5a at a stop boarding position A and a column 5b positioned one forward of the traveling direction from the column 5a. As shown in FIG. 1 (b), the installed alerting unit 9, the camera terminal 4 installed on the column 5c located one rearward in the traveling direction from the column 5d at the stop point B, and And an alerting portion 9 installed on the column 5d at the place of getting off the place B.

With reference to FIG. 2, the structure of a carrier is demonstrated.
In this embodiment, a two-seater transporter will be described as an example.

As shown in FIG. 2, the transporter 1 has a transporter main body 11, a gripping device 12 fixed to the transport wire rope 10, one end connected to the gripping device 12, and the other end connected to the transporter main body 11. And a suspender 13.
The transporter main body 11 includes a bar 2 that can be raised and lowered and a seat 14 on which a passenger 3 can sit.
The bar 2 is constituted by an endless pipe formed in a rectangular shape, has a shape bent up and down at the center of the short side of the bar 2, is fixed with the bent portion 2a as a rotation fulcrum, and can be rotated in the vertical direction. It has become. The passenger 3 sits on the seat 14 and the bar 2 can be raised and lowered manually.

Next, the configuration of the safety bar warning device 100 of the present embodiment will be described.
The safety bar warning device 100 includes an image analysis unit 15 in addition to the camera terminal 4 and the alerting unit 9 described above.
As shown in FIG. 1, the camera terminal 4 is installed on a column 5a at a stop boarding position A and a column 5c that passes in front of a column 5d at a stop landing position B.
As shown in FIG. 3, the camera terminal 4 is wired or wirelessly connected to the image analysis unit 15 and takes, for example, a high-resolution color image in consideration of nighttime or bad weather and captures the captured image. The image is transmitted to the image analysis unit 15.
Moreover, since the camera terminal 4 is installed outdoors, such as a ski resort, for example, a camera terminal 4 with a waterproof, dustproof, and low temperature resistant function is applied. Furthermore, if necessary, it is preferable to take measures such as protecting the lens with an acrylic hemisphere and storing the lens other than the lens in a case or attaching a roof to the camera terminal 4.

  The image analysis unit 15 includes a monitor 16, a first communication unit 17, and an analysis processing device 18. In addition, the image analysis unit 15 is installed in a cableway driver's room of a ski resort, or other than the monitor 16 is installed on a column or the like together with the camera terminal 4.

  The monitor 16 is connected to the analysis processing device 18 in a wired manner and displays a status such as an image captured by the camera terminal 4, an analysis status by the analysis processing device 18, and a transmission status of analysis information to the alerting unit 9. To do. In addition, you may display the operation condition, alerting condition, etc. of the carrier 1.

  The first communication unit 17 transmits information to the second communication unit 7 through a wired connection or a wireless connection in response to a request from the analysis processing device 18. In FIG. 3, the first communication unit 17 and the analysis processing device 18 are wired, but wireless connection is also possible.

The first communication unit 17 uses a 429 MHz band specific low power unit. Although it is recommended to use a specific low-power radio facility for telecontrol (compliant with ARIB STD-T67) as the low-power unit, it can be realized with other wired terminals or wireless terminals.
The transmission distance of the above low-power wireless unit is assumed to be about 3 km, but it is necessary to determine whether or not a repeater can be installed depending on the place of use and the environment.

  The analysis processing device 18 is configured by, for example, a personal computer, and includes a CPU 19, a ROM 20, and a RAM 21, and executes a display function, a communication function, an image processing function, an analysis function, and an alert determination function.

The ROM 20 stores various control programs executed by the CPU 19 and setting data.
Here, the setting data includes image data of a non-boarding transporter, image data indicating the position of the bar in the transporter when the bar is used or not used, and the like. Since the former image data is used to determine whether or not a passenger is riding, the latter image data is image data to be compared for determining whether or not the bar position is a predetermined position as described above. .

  The RAM 21 provides a working memory space to the CPU 19 and temporarily stores data. Specifically, image data obtained by performing image processing for analysis on the video imaged by the camera terminal 4 is stored.

  The CPU 19 displays various information on the monitor 16. Specifically, the image captured by the camera terminal 4, the presence / absence of passengers or the analysis status of the position of the bar 2, the transmission status when information is transmitted from the image analysis unit 15 to the alerting unit 9 Information on the speed of cableway driving.

  Further, the CPU 19 receives an image captured by the camera terminal 4 and transmits analysis information and the like to the alerting unit 9.

Further, the CPU 19 performs image processing on the video acquired by the camera terminal 4 into image analysis data.
As an example of image processing, specifically, image data of an instant at which the position of the bar 2 can be analyzed is extracted based on a part of the video imaged by the camera terminal 4, that is, the comparison target stored in the ROM 20. To do. Image processed image data is temporarily stored in the RAM 21.

  In addition, the CPU 19 performs a process of determining whether the passenger is a boarding vehicle or a non-boarding vehicle, and a process of analyzing the position of the bar 2 based on the image data subjected to the image processing. Run.

In the present embodiment, as a method of analyzing whether or not the position of the bar 2 is a predetermined position, a method of analyzing by detecting the height position of the bar 2 in the transporter 1 when the bar 2 is used and when not used. explain.
As a detection target, the height position of the bar 2 on the front side of the passenger is detected and analyzed.

  For the detection of the bar 2, it is preferable to detect a straight line by using OpenCV or the like to which the Hough transform is applied.

FIG. 2 (a) shows the state of the bar 2 of the non-carriage carrier, and FIG. 2 (b) shows the passenger 3 using the bar 2 while getting on.
As shown in FIGS. 2A and 2B, the front side of the bar 2 is raised when not riding or when the bar 2 is not used, and is lowered when the bar 2 is used. On the other hand, the rear side of the bar 2 is lowered when not riding or when the bar 2 is not used, and is raised when the bar 2 is used.
Therefore, the progress of the transporter, that is, whether after the boarding or before getting off, whether the front height position of the bar 2 is detected or the rear height position of the bar 2 is detected, etc. Judgment criteria should be established accordingly, and the necessity of alerting passengers must be determined.

Although the method for analyzing the height position of the bar 2 in the transporter 1 when the bar 2 is used and when not in use has been described, in the illustrated example, it is more accurate to determine the height position of the front side of the bar 2. Judgment is possible.
However, depending on the transporter, there are some transporters in which the fixed position of the bar 2 is low and the passenger's body overlaps the bar 2 when not in use and the transporter is higher on the rear side of the bar 2 when in use. Alternatively, it is preferable that the determination is made for each use environment or for each carrying device, such as which of the rear side should be the object of analysis, or both of which should be the object of analysis.
Specifically, in the acquired image, if the passenger is not on board, it is not necessary to analyze the position of the bar 2, so it is necessary to determine whether or not the passenger is a transporter on board. If the passenger is a carrying device, the process proceeds to analysis of image data.
When it is determined that the passenger is a carrying device, the image processed image data stored in the RAM 21 is compared with the image data stored in the ROM 20 when the bar 2 is used or not used. By doing so, the height position of the bar 2 is analyzed.

  The CPU 19 determines whether or not alerting is necessary based on the analysis result. In the case of the transporters 1 a and 1 c at the position of the bar 2 as shown in FIG. 1, it is determined that alerting is necessary, and information indicating that alerting is necessary is immediately output to the alerting unit 9. When the position of the bar 2 is a predetermined position, it waits until the next analysis result is acquired.

  The analysis processing device 18 has an external I / O 22 for connecting the monitor 16 and the first communication unit 17 by wire.

  The alerting unit 9 includes an external speaker 6, a second communication unit 7, and an audio output device 8. Further, the alerting unit 9 may be installed on the support columns 5b and 5d as shown in FIG. 1, and other than the external speaker 6 described later, together with the image analysis unit 15, is installed in the cableway cab of the ski resort. May be.

The second communication unit 7 receives information from the first communication unit 17 and transmits it to the audio output device 8. Also, information is transmitted to the image analysis unit 15 in accordance with an instruction from the audio output device 8.
Specifically, the information to be transmitted includes information indicating that the information from the image analysis unit 15 has been received, information indicating that attention has been given to the passenger, and the like.
The second communication unit 7 is normally connected to the audio output device 8 by wire, but wireless connection is also possible. The second communication unit 7 can be the same as the first communication unit 17 described above.

  The audio output device 8 includes a CPU 23 and a storage unit including an audio ROM 24, and executes a communication function and an audio reproduction function.

  The CPU 23 receives the information transmitted from the image analysis unit 15, and transmits the information indicating that the information is received to the image alerting unit 15 to the image analysis unit 15.

The voice ROM 24 stores a warning message. When it is determined that the position of the bar 2 is not a predetermined position, the CPU 23 reads voice data stored in the voice ROM 24.
Specifically, after the alarm sounding, the voice ROM 24 is operated by the passenger 3 of the carrier 1 such as “Dangerous” status information and “Please lower the bar” or “Please raise the bar”. Voice data for prompting is stored.

As illustrated in FIG. 1A, at the stop boarding position A, there is a risk of a drop accident or the like when the bar 2 is raised after boarding, that is, in the state of the transporter 1a. At the timing when the position 1b is reached, the external speaker 6 provided in the column 5b outputs state information and a voice message prompting the passenger 3 to “lower the bar” to alert them.
Similarly, as illustrated in FIG. 1B, at the stop B getting off position B, before getting off, there is a risk of getting over when the bar 2 is lowered, that is, in the state of the transporter 1c. At the timing when the position of the transporter 1d is reached, the external speaker 6 provided in the column 5d at the stop point B is output to the passenger 3 with status information and a voice message prompting the passenger to “raise the bar”. An alert is issued.

  The timing at which the voice message is output is not limited to the above, and it is necessary to consider the timing and volume at which the passenger 3 can hear the voice message reliably. The listening position should be adjusted according to the installation environment such as a ski resort, and in the case of after boarding, playback may be performed at the timing of passing through the column 5b where the external speaker 6 is installed.

  Further, the CPU 23 instructs the passenger 3 to reproduce the voice message read by the voice ROM 24 from the external speaker 6.

  The audio output device 8 includes an external I / O 25 for connecting the second communication unit 7 and the external speaker 6 by wire.

  As shown in FIG. 1, in the present embodiment, an example is shown in which all three devices constituting the alerting unit 9 are installed on one column 5, but the audio output device 8 is combined with the image analysis unit 15. The image analysis unit 15 may be provided with the data and functions of the audio output device 8, that is, the audio ROM 24 and the audio reproduction function. In this case, the external speaker 6 receives an instruction from the device through a wired connection or a wireless connection and reproduces a voice message.

In the present embodiment, the example in which the image analysis unit 15 includes the attention determination function has been described. However, the image generation unit 9 may be provided.
However, in this case, the analysis information for each portable device must be sent from the image analysis unit 15 to the alerting unit 9 regardless of the necessity of alerting. On the other hand, in the example of the present embodiment, since information to that effect is output to the alerting unit 9 only when alerting is necessary, the efficiency is high.
Therefore, it is preferable that the image analysis unit 15 has a warning determination function, but it is preferable to determine an installation location or the like according to a use location or an environment.

  The processing operation of the present invention will be described with reference to FIG.

  First, in step S <b> 1, image data of the transporter 1 that has been subjected to image processing by the image analysis unit 15 is acquired from video captured by the camera terminal 4.

  Next, in step S2, it is determined whether or not a passenger is on the acquired image data.

  If it is determined from the determination result in step S2 that the passenger 3 is on (step S2: YES), the position of the bar 2 needs to be analyzed, and the process proceeds to the next step S3.

If it is determined in step S3 that the position of the bar 2 is not the predetermined position (step S3: NO), the passenger 3 needs to be alerted, and the process proceeds to the alerting step (step S4).
In step S 4, the voice message is reproduced through the speaker 6 in response to an instruction from the voice output device 8.

  On the other hand, if it is determined in step S2 that the vehicle is a non-carriage carrier (step S2: NO), or if it is determined in step S3 that the position of the bar 2 is a predetermined position (step S3: YES), Wait until the image of the transporter is acquired (return to step S1).

  Thereafter, the processes of steps S1 to S4 are repeated for each transported imaged device.

Next, a modification of the above embodiment will be described with reference to FIG.
FIG. 5 shows an example of marking on a bar, where (a) shows a striped pattern and (b) shows an example of marking with diagonal lines.

  In addition to the form for detecting the height position of the bar described in the above embodiment, the form for applying the marking M (M1, M2) to the bar 2 and detecting the marking M to analyze the position of the bar 2 Is also effective. By applying the marking M, detection accuracy can be improved.

FIG. 5A shows an example of a striped marking M1 on the front side of the bar, and FIG. 5B shows an example of a hatched marking M2. However, coloring is performed to easily identify color information. Alternatively, markings may be scattered at the corners of the bar 2 or the like.
However, the marking must be as prominent as possible so that it can be detected in any usage environment in consideration of bad weather and surrounding scenery. Moreover, the method of detecting a bar | burr with the amount of infrared rays reflection using an infrared sensor may be used.
Although the example of marking is not limited, it is necessary to prepare a detection device corresponding to the marking.

  Further, marking may be performed on the rear side of the bar 2 or may be performed on both the front side and the rear side of the bar 2. Further, in combination with the above embodiment, a straight line detection may be used for the height position of the marked bar 2.

  As described above, according to the safety bar warning device 100 of the cableway chair type portable device 1 of the present invention, the image data of the portable device 1 is acquired using the camera terminal 4 installed on the column 5 and image analysis is performed. Based on the image data of the portable device 1 captured by the unit 15, it is analyzed whether or not a passenger is on the portable device 1, and when the passenger 3 is the portable device 1 on the vehicle, the position of the bar 2 is analyzed. . It is determined whether or not the position of the bar 2 is a predetermined position, and if it is not the predetermined position, state information for alerting the passenger 3 by the external speaker 6 of the alerting unit 9 installed in the column 5 And output a voice message. Therefore, safety can be improved with less construction and cost.

In this embodiment, for convenience of explanation, a two-seater transporter is assumed, but the same detection method can be applied to a single-seat or three-seater transporter with a bar. .
Moreover, in this embodiment, although the portable device 1 is imaged from back in the advancing direction, you may image from the advancing direction front. Even in this case, it is not necessary to change the detection method, and the time until the voice message is reproduced is longer than that in the case of imaging from the rear in the traveling direction, so that the analysis time can be secured longer.

  Also, in order to reliably transmit a voice message for alerting, it is preferable to transmit the voice message from the front, and the column where the external speaker is installed is a column that passes next to the column where the camera terminal is installed. It does not have to be. However, since it is necessary to immediately alert a passenger who gets on a carrier that needs to be alerted, an arrangement like this embodiment is preferable. However, there is a possibility that such an arrangement may not be possible depending on the ski resort or the like, so it is necessary to consider these arrangements according to the installation environment.

  Further, the shape of the bar may be formed by a U-shaped pipe whose end is fixed to the frame of the transporter body. In this case as well, the detection method of the present embodiment can be detected because the front position of the bar is detected as in the present embodiment.

  In this embodiment, an example in which a warning device is installed near the stop boarding position and near the stop getting off position is shown, but this device is installed on a support column in the middle of boarding to analyze the position of the bar during boarding. May be. Since there is a cableway with a long distance between the stop boarding position and the stop getting off position, and there is no denying the possibility that the passenger raises the bar on the way, it is effective to install a warning device during the boarding.

1a to 1d carrying device (cable chair type carrying device)
2 Safety Bar 4 Camera Terminal 6 External Speaker 8 Audio Output Device 9 Warning Unit 15 Image Analysis Unit 18 Analysis Processing Device 100 Safety Bar Warning Device

Claims (5)

A camera terminal that images the chair-type carrier of the cableway;
Based on the image captured by the camera terminal, an image analysis unit that analyzes whether or not the position of the safety bar of the chair type transporter of the cableway is a predetermined position;
When the position of the safety bar is not a predetermined position, an alerting part that alerts passengers;
A safety bar warning device for a cable chair chair-type transporter, characterized by comprising: 2. The safety bar warning device for a cableway chair-type transporter according to claim 1, wherein the image analysis unit analyzes whether or not a height position of the safety bar is a predetermined position from the image.   The safety bar of a cableway chair type carrier according to claim 1 or 2, wherein the image analysis unit analyzes whether or not the position of the marking applied to the safety bar is a predetermined position from the image. Warning device. The alerting part is
If the position of the safety bar is not a predetermined position, voice playback means for playing a voice message for alerting passengers;
An external speaker for outputting the reproduced voice message, and
The safety bar warning device for a cableway chair-type transporter according to any one of claims 1 to 3. It is a warning method by the safety bar warning device of the chair type carrier of the cableway according to claim 4,
Using the camera terminal installed on the column to acquire the image data of the cable carrier chair type carrier,
Based on the image data of the cableway chair-type transporter imaged by the image analysis unit, analyze whether the passenger is on the cableway chair-type transporter,
If it is a chair type transporter on the cableway on which the passenger is riding, analyze the position of the safety bar to determine whether the position of the safety bar is a predetermined position,
When it is not a predetermined position, an audio message for alerting a passenger is output by an external speaker of the alerting unit installed on the support column. Warning method.

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