JPH1191567A - Safety monitoring device for platform - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily detect a passenger who is close to a train in excess or who is caught in a door, by executing the pattern recognition on the basis of the reflected beam optical pattern information, and detecting the passengers or an obstacle at the start of a car of a train. SOLUTION: A reflected beam optical detecting means 22 detects the reflected light 22a of a beam light 20a applied onto a door surface or the like, and generates the reflected beam optical pattern information 22b which is a cut surface pattern. A TV camera 23 picks up the images or a door of a train, and a side wall part of a door opening, from an upper part of a platform, to generate the image information 22c as the reflected beam optical pattern information 22b. A safety monitoring control means 30 executes the pattern recognition on the basis of the reflected beam optical pattern information, detects a passenger who is close to a car in excess, or an obstacle such as a matter which interferes the car, at the start of the train, and outputs the warning information 30a when the dangerous condition is found, to give the warning.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for detecting a passenger or an obstacle such as an obstacle entering a danger zone which is excessively close to a train when the train starts, and informing that the vehicle is in a dangerous state. The present invention relates to a platform safety monitoring device which outputs a warning and optionally stops a train. Here, the state of entering the dangerous area includes a state where passengers, obstacles, and the like are not only approaching the train but also being sandwiched by doors.

[0002]

2. Description of the Related Art As a conventional platform safety monitoring device, for example, when a vehicle enters or starts, a conductor checks an obstacle such as a passenger or an obstacle with a television camera or the like, and a station staff monitors the vehicle. In general, a warning is given by voice or the like when there is a dangerous state, and in some cases, the train is urged to stop.

As shown in FIGS. 8 and 9, a safety fence 1 is connected to a side edge of a platform, a danger zone is formed between the side edge of the platform and the safety fence 1, and light is emitted in the danger zone. In some cases, the pillar 2 and the light receiving pillar 3 are erected and infrared rays or the like are provided to detect the entry of a passenger or an obstacle such as an obstacle into a dangerous area.

[0004]

However, in such a conventional platform safety monitoring device, in the former case, it is necessary to maintain concentration during vehicle operation so that conductors and station staff are not overlooked. However, there is a problem that the conductor and the station staff become a heavy burden, and if the conductor or the station staff is overlooked, the safety cannot be sufficiently secured.

In the latter case, the width of the platform is reduced by the provision of the safety fence 1 on the platform, and the portion where the platform can be safely walked is reduced, so that it is possible to cope with congestion during commuting hours and the like. Some stations cannot be used, and it is difficult to adopt them at all stations. In addition, the light emitting column 2 and the light receiving column 3 are located at a predetermined distance (for example, 23 mm) from the side edge of the platform.
0 mm) or more, so infrared rays etc. cannot be applied to the part very close to the train, so small and thin children etc. entered the dangerous area and approached the position very close to the train There is a problem in that it is difficult to detect when the vehicle is caught in a door or when it is caught by a door, and it takes a long time to confirm the safety by the amount that is difficult to detect.

SUMMARY OF THE INVENTION The present invention has been made in view of such conventional problems. The present invention has been made to improve the safety while reducing the burden on a conductor and station staff, and to provide a station having any kind of platform. An object of the present invention is to provide a platform safety monitoring device capable of easily detecting a passenger getting too close to a train or getting caught between doors.

[0007]

The gist of the present invention to achieve the above object lies in the following inventions. [1] When the train (11) starts, it senses an obstacle (13) such as a passenger or an obstacle that has entered a dangerous area that is too close to the train (11), and indicates that it is in a dangerous state. Outputs information and warns, and in some cases trains (1
In the safety monitoring device for a platform configured to prompt the stop of 1), the safety monitoring device for the platform includes:
Beam light irradiation means (20), reflected beam light detection means (2
2) and safety monitoring control means (30), and the light beam irradiation means (20) emits a fan-shaped light beam (20a) opened in the traveling direction of the train (11) to the door (12) of the train (11). ), And the reflected beam light detecting means (22) detects the reflected light (22a) of the beam light (20a) irradiated on the door (12) surface of the train (11), The reflected light beam pattern information (22b) is generated, and the safety monitoring control means (30) performs pattern recognition based on the reflected light beam pattern information (22b), and when the vehicle of the train (11) starts moving. Detecting an obstacle (13) such as a passenger or an obstacle that is too close to the vehicle,
A safety monitoring device for a platform, which outputs warning information indicating that the vehicle is in a dangerous state.

[2] When the train (11) starts moving, the train (1)
The system detects an obstacle (13) such as a passenger or an obstacle that has entered a dangerous area that is too close to 1), outputs information indicating that the vehicle is in a dangerous state, and warns the train, and in some cases, trains (11) In the platform safety monitoring device for prompting a stop, the platform safety monitoring device includes a beam light irradiation unit (20), a reflected beam light detection unit (22), and a safety monitoring control unit (30). The beam light irradiating means (20) irradiates a fan-shaped beam light (20a) opened in a traveling direction of the train (11) toward a door (12) surface of the train (11), and The light detection means (22) is connected to the door (1) of the train (11).
2) detecting the reflected light (22a) of the light beam (20a) applied to the surface and detecting the reflected light beam pattern information (2);
2b), and the safety monitoring control means (30) generates two reflected beams when the door (12) closes immediately after the train (11) arrives and when the door (12) closes immediately before the train (11) starts moving. Based on the light pattern information (22b), pattern recognition is performed, and when a difference occurs between both recognition patterns, an obstacle (13) such as a passenger or an obstacle that is excessively close to the vehicle is detected. A safety monitoring device for a platform.

[3] The light beam irradiation means (20)
Scan driving means (2) for displacing the light beam (20a) to scan the door (12) surface of the train (11) in the vertical direction.
5) The platform safety monitoring device according to [1] or [2], wherein

[4] The reflected beam light detecting means (22)
Is the reflected light (22) of the light beam (20a) applied to at least the lower end of the door (12) of the train (11).
a) is detected and reflected light beam pattern information (22b)
The safety monitoring device for a platform according to [1], [2], or [3], wherein:

The present invention operates as follows. In the platform safety monitoring device according to the item [1], when the passenger is caught between the doors (12), and the reflected beam light detection means (22) is provided with a television camera, the television camera: Image information as reflected light beam pattern information (22b) can be generated based on the reflected light (22a) reflected from the door (12) surface of the train (11).

The safety monitoring control means (30) executes pattern recognition on the basis of the reflected light beam pattern information (22b), so that passengers or obstacles excessively close to the train (11) when the train starts moving. And other obstacles (13) can be detected.

Thus, when the train (11) starts, information indicating that the train (11) is in a dangerous state is output and a warning is issued, and the train (11) is prevented from starting in the dangerous state. Can be. Thus, safety can be improved while reducing the burden on the conductor and station staff.

[0014] In the safety monitoring device for a platform described in the item [2], the safety monitoring control means (30) includes the train (11).
The pattern recognition is executed based on the two reflected light beam pattern information (22b) when the door (12) is closed immediately after arrival of the train (11) and when the door (12) is closed immediately before departure of the train (11).

[0015] The safety monitoring control means (30), when a difference occurs between both recognition patterns, that is, when both recognition patterns do not match, the obstacle (13) such as passengers or obstacles, the train (13) At the start of (11), the vehicle door (1
It is possible to detect that the vehicle has approached 2) excessively, and output warning information indicating that the vehicle is in a dangerous state to warn the user if the vehicle is in a dangerous state.

[3] In the platform safety monitoring device described in the item [3], the beam light irradiating means (20) vertically displaces the fan-shaped beam light (20a) to move the door (12) surface of the train (11). Since scanning is performed, the reflected light (22a) of the light beam (20a) applied to an arbitrary position in the direction perpendicular to the door (12) surface is detected, and reflected light beam pattern information (22b) is generated. it can. For example, it is not necessary to provide a plurality of light beam irradiating means (20) and irradiate the plurality of light beams (20a) at regular intervals in the direction perpendicular to the surface of the door (12).

[0017] In the platform safety monitoring device according to the item [4], even if the passenger is a passenger such as a small child located at a low position with respect to the door (12), the light beam (20a) can be used.
And reflected beam light detecting means (22)
Is a light beam (20) emitted toward the door (12).
The reflected light (22a) of (a) can be detected to generate reflected light beam pattern information (22b).

As described above, according to the present invention, the burden on the conductor and station staff is reduced, the safety is improved, and no safety fence is required, and the width of the platform is relatively narrow. It is possible to realize a platform safety monitoring device that can be used in a station.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a functional block diagram of a platform safety monitoring device 10 according to an embodiment of the present invention, and FIG. 2 is a front view showing an arrangement of the platform safety monitoring device 10 according to an embodiment of the present invention. FIG. 3 shows a platform safety monitoring device 10 according to an embodiment of the present invention.
FIG. 4 is a plan view showing an arrangement of the platform safety monitoring device 10 according to the embodiment of the present invention.

As shown in FIGS. 1 to 4, the safety monitoring device 10 of the platform is provided so that when the train 11 starts moving, it is too close to the door 12 of the train 11, or a passenger or obstacle obstructed by the door 12. In addition to detecting the obstacle 13 and outputting a warning to the effect that the vehicle is in a dangerous state, the train 11 may be stopped in some cases. As shown in FIG. Means 20, a reflected beam light detecting means 22, and a safety monitoring control means 30. In the present embodiment, a method of sensing the obstacle 13 by directly observing deformation due to the surface shape of the door 12 by a light cutting method is employed.

In the present embodiment, the platform end 14
A safety fence 18 is erected about 1 m from a, and the area from the platform end 14a to the safety fence 18 is a danger zone 15, prohibiting passengers from walking and placing obstacles and the like. The installation of the safety fence 18 excludes the position corresponding to the door opening.

The beam light irradiating means 20 is a fan-shaped beam light 20a which is open from the upper side of the platform 14 toward the train traveling direction toward the door surface of the train and both side walls of the door opening.
Is irradiated. The beam light 20a is applied so as to cut the door surface and both side walls of the door opening.
It is also possible to easily detect a passenger in a dangerous state between the two.

In this embodiment, the light beam irradiation means 20
An infrared light source, a visible light source, or the like can be used as the light beam. An infrared laser light source or the like can be used as the infrared light source. As the visible light source, a visible light laser light source, an LED light source, a lamp light source, and the like can be used.

The light beam irradiation means 20 is provided with an optical system for shaping the light generated by the light source into a predetermined fan-shaped beam shape. The optical system includes a cylindrical lens and a cylindrical mirror.

The light beam irradiating means 20 has a scanning drive means 25 which is a scanning mechanism for displacing the fan-shaped light beam and scanning the door surface of the train in the vertical direction. In the present embodiment, the light beam irradiation means 20 is installed on the roof side of the platform 14 and irradiates the door surface and the side wall of the door opening from above the platform 14. When the safety fence 18 is erected on the platform 14 as in the present embodiment, the light beam irradiation means 20 may be provided on the safety fence 18.

In the present embodiment, the light beam irradiation means 20 is provided corresponding to the door 12 of the train stopped on the platform 14. On the other hand, a train (one in which the door 12 is provided only at the front end and the rear end of the vehicle,
2 is also provided at the center of the vehicle), the position of the door 12 differs. In such a case, the doors 12 provided at the front end and the rear end of the vehicle are provided.
Although the position is slightly different depending on the type of train, the irradiation direction may be slightly changed so that one beam light irradiation unit 20 can irradiate the door 12 at a slightly different position.

Scan driving means 25 of beam light irradiation means 20
The scanning range substantially corresponds to the vertical width of the door 12, but as shown in FIGS. 5 and 6, the reflected light 22a of the light beam 20a to be detected includes the upper limit position of the scanning range,
The reflected light 22a is set at four positions: a lower limit position, an upper position, and a lower position. It is sufficient that the reflected light 22a is detected at least at two positions, that is, a lower position and a lower limit position. That is, even if a thin and short passenger gets too close to the door 12 or is pinched by the door 12 due to the reflected light 22a detected at the two places, such a dangerous state Can be easily detected.

The reflected light beam detecting means 22 is provided in pairs with the light beam irradiating means 20 so as to detect the reflected light 22a of the light beam 20a applied to the door surface and the side wall of the door opening. Beam light pattern information 22b
Is connected to the safety monitoring control means 30 so as to generate

The reflected light beam pattern information 22b is a cut surface pattern in which the door surface and the side of the door opening are cut out at four positions, that is, the upper limit position, the lower limit position, the upper position, and the lower position of the scanning range. The reflected light beam pattern information 22b, which is a cut surface pattern, is generated after the train arrives and immediately before the door is opened, and after the door is closed and immediately before the train starts.

If the light beam irradiating means 20 is configured to be able to irradiate the doors 12 at slightly different positions by a single unit as described above, the light beam irradiating means 20 corresponds to the light beam irradiating means 20. The light beam detecting means 22 is provided.

The reflected beam light detecting means 22 of the present embodiment
In the scanning range of the scanning driving unit 25 of the light beam irradiation unit 20, as shown in FIG. 5, the reflected beam is photographed at the upper limit position, the lower limit position, the upper position, and the lower position, and reflected beam light pattern information is obtained. A television camera 23 capable of generating image information 22c as 22b is provided.

In this embodiment, the light beam irradiation means 20
When an infrared light source is used as the light source, it is necessary to use a television camera 23 having a sufficient sensitivity to the infrared light generated by the infrared laser light source, and an optical filter for blocking unnecessary disturbance light is provided in a proper position. May be provided.

When a visible light source is used as the light source of the light beam irradiating means 20, it is necessary to use a television camera 23 having sufficient sensitivity to the visible light generated by the LED light source. An optical filter for blocking light may be provided at an appropriate position. Further, the reflected beam light detecting means 22 may be provided with an optical system for efficiently receiving the reflected light 22a with high S / N.

The light receiving field of the light beam irradiating means 20 is a range in which the door 12 and the periphery of the side of the door opening can be photographed, and covers the scanning range of the light beam 20a.

The safety monitoring control means 30 transmits the reflected light beam pattern information 22b at the four positions of the upper limit position, the lower limit position, the upper position and the lower position (after the train arrives, immediately before the door is opened, and after the door is closed). Then, it is determined whether there is a difference between the pair of reflected light beam pattern information 22b at any of the four positions.

The safety monitoring control means 30 determines that there is a difference in the pair
If a passenger 13 or an obstacle 13 such as an obstacle that is excessively close to the door 12 of the vehicle 11a is detected at the time of departure of the vehicle 11a, the warning information 30a indicating that the vehicle is in a dangerous state is output and a warning is issued. It is connected to the reflected beam light detecting means 22 so as to facilitate the operation.

The safety monitoring control means 30 of the present embodiment
Immediately before the train starts, it may be connected to a speaker in the station premises so that a warning signal at the time of approach can be automatically transmitted so that warning information indicating a dangerous state can be notified to passengers. Further, the safety monitoring control means 30 of the present embodiment
May be configured to encourage restraint for the train to proceed.

Next, the operation will be described. FIG. 4 is a diagram illustrating pattern recognition based on the reflected light beam pattern information 22b in the platform safety monitoring device 10 according to one embodiment of the present invention.

The platform safety monitoring device 10 according to the present embodiment senses a passenger 13 or an obstacle 13 such as an obstacle that is excessively close to the train 11 when the train 11 starts and determines that the vehicle is in a dangerous state when the train 11 is in a dangerous state. In addition to outputting the information to the effect, it is possible to warn and, in some cases, to stop the train 11.

Thus, the burden on the station staff can be reduced,
Safety can be improved and costs can be reduced.

The operation of the present embodiment will be described in more detail. A plurality of light beam irradiating means 20 provided above the platform 14 corresponding to the train doors 12 to be stopped
Is transmitted from above the platform 14 to the door surface of the train 11 of the platform 14 and the door opening side wall.
In addition to irradiating 0a, the light beam 20a can be vertically scanned along the door surface of the train 11 within a scanning range substantially corresponding to the vertical width of the door 12.

The irradiation of the light beam by the light beam irradiation means 20 is performed at least when the train is arriving and immediately before the door is opened, and immediately after the door is closed and immediately before the train starts moving, respectively.

The reflected beam light detecting means 22 attached to the beam light irradiating means 20 detects the reflected light 22a of the beam light 20a irradiated on the door surface or the like, and reflects the reflected beam light pattern information 22b as a cut surface pattern. Can be generated. The generation of the reflected light beam pattern information 22b is performed according to each of the doors closing.

When the television camera 23 is mounted on the reflected beam light detecting means 22, the television camera 23 photographs the door 12 of the train 11 and the side wall of the door opening from above the platform to obtain reflected beam light pattern information 22b. Image information 22c can be generated.

The safety monitoring control means 30 executes pattern recognition on the basis of the reflected light beam pattern information 22b, and at the same time the vehicle 11a of the train 11 starts moving, the passengers or obstacles too close to the vehicle 11a. 13 is detected, and if it is in a dangerous state, warning information 30a to that effect can be output to urge a warning.

When there is no obstacle 13 such as a passenger or an obstacle, the reflected light beam pattern information 22b from the door surface and from the vicinity of the side of the door opening, as shown in FIG. At each of the four positions of the upper limit position, the lower limit position, the upper position, and the lower position, the reflected light beam pattern 22d has continuous linearity.

Also, an obstacle 13 such as a passenger or an obstacle
Is present, the reflected beam light pattern information 22b is:
As shown in FIG. 6, three positions of a lower limit position, an upper position, and a lower position of the scanning range (in FIG. 6, since there is no obstacle at the upper limit position, one position of the upper limit position is excluded). Is a transformed reflected light beam pattern 22e having no linearity.

The safety monitoring control means 30 of the present embodiment
From the image information 22c as the reflected beam light pattern information 22b generated in response to the door closing after each of the doors is closed, the image as reflected beam light pattern information 22b generated in response to the preceding door closing. A measurement image is obtained by subtracting the information 22c.

For example, the image information 22c (reflected light beam pattern information 22b generated corresponding to the subsequent door closing)
) Is subtracted from the image information 22c (referred to as reflected beam light pattern information 22b generated in response to the previous door closing), and when the portion where the straight line is deformed remains without being subtracted, the door surface is removed. Alternatively, it is possible to detect an obstacle 13 such as a passenger or an obstacle that is excessively approached to the side wall of the door opening or pinched by the door. At this time, if the unevenness caused by the obstacle 13 is about three times the unevenness of the door surface, the obstacle 13 can be sufficiently detected.

The safety monitoring control means 30 of the present embodiment
When connected to the speaker in the station yard, when the obstacle 13 in a dangerous state is detected, the warning information 30a is output to the train 11 to be started, and the start-time warning broadcasting can be automatically performed.

The safety monitoring control means 30 according to the present embodiment
If it is connected to the obstruction light in the station yard, it can warn in advance that it is in a dangerous state. When the safety monitoring control means 30 of the present embodiment is connected to the speaker in the station yard, the safety monitoring control means 30 transmits a warning broadcast so that the passenger 11 can be alerted to caution information that the train 11 is in a dangerous state when starting. Can do it automatically.

Further, when the safety monitoring control means 30 of the present embodiment is connected to the train 11 via a transponder, the safety monitoring control means 30 can urge the train 11 to be restrained at the time of starting.

[0053]

According to the platform safety monitoring device of the present invention, when the vehicle starts moving, the vehicle is excessively approached or a passenger caught or caught in the door is sensed. Information and a warning to stop the train in some cases, which can reduce the burden on station staff, improve safety, and restrict the width of the platform when adopting. For example, the present invention can be applied to a station having a narrow platform.

[Brief description of the drawings]

FIG. 1 is a functional block diagram of a platform safety monitoring device according to an embodiment of the present invention.

FIG. 2 is a front view showing an arrangement of a platform safety monitoring device according to an embodiment of the present invention.

FIG. 3 is a plan view showing an arrangement of a platform safety monitoring device according to an embodiment of the present invention.

FIG. 4 is a side view showing an arrangement of a platform safety monitoring device according to an embodiment of the present invention.

FIG. 5 is a diagram illustrating an irradiation state of a light beam in the platform safety monitoring device according to the embodiment of the present invention.

FIG. 6 is a diagram illustrating pattern recognition based on reflected light beam pattern information in the platform safety monitoring device according to one embodiment of the present invention.

FIG. 7 is a diagram illustrating pattern recognition based on reflected beam light pattern information in the platform safety monitoring device according to one embodiment of the present invention.

FIG. 8 is a plan view showing an arrangement of a platform safety monitoring device according to a conventional example.

FIG. 9 is a side view showing an arrangement of a platform safety monitoring device according to a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Platform safety monitoring device 11 ... Train 11a ... Vehicle 12 ... Door 13 ... Obstacles such as passengers or obstacles 14 ... Platform 18 ... Safety fence 20 ... Beam light irradiation means 20a ... Beam light 22 ... Reflected beam light detection Means 22a: Reflected light 22b: Reflected beam light pattern information 22c: Image information 22d: Reflected beam light pattern when no obstacle exists 22e: Reflected beam light pattern when an obstacle exists 23: Television camera 25: Scan driving Means 30: Safety monitoring control means 30a: Warning information

Claims (4)

[Claims] At the start of a train, an obstacle such as a passenger or an obstacle entering a dangerous area which is excessively close to the train is sensed, and when the train is in a dangerous state, information is output to warn the driver of the danger. And a platform safety monitoring device adapted to prompt a stop of a train, as the case may be, wherein the platform safety monitoring device includes a beam light irradiation unit, a reflected beam light detection unit, and a safety monitoring control unit, and the beam light irradiation unit Irradiates a fan-shaped beam light opened in the traveling direction of the train toward the door surface of the train, and the reflected beam light detecting means detects reflected light of the beam light irradiated on the door surface of the train. The safety monitoring control means performs pattern recognition based on the reflected beam light pattern information, and generates a reflected beam light pattern information when the train starts moving. A safety monitoring device for a platform, which detects an obstacle such as a passenger or an obstacle that is in close proximity to the vehicle, and outputs warning information indicating that the vehicle is in a dangerous state. 2. The system detects a passenger or an obstacle such as an obstacle that has entered a dangerous area that is too close to the train when the train starts, and outputs a warning indicating that the vehicle is in a dangerous state. And a platform safety monitoring device adapted to prompt a stop of a train, as the case may be, wherein the platform safety monitoring device includes a beam light irradiation unit, a reflected beam light detection unit, and a safety monitoring control unit, and the beam light irradiation unit Irradiates a fan-shaped beam light opened in the traveling direction of the train toward the door surface of the train, and the reflected beam light detecting means detects reflected light of the beam light irradiated on the door surface of the train. The reflected light beam pattern information is generated, and the safety monitoring control means includes two reflected beam light pattern information when the door is closed immediately after the train arrives and when the door is closed immediately before the train starts moving. And performing pattern recognition on the basis of the above, and when there is a difference between both recognition patterns, detecting an obstacle such as a passenger or an obstacle that is excessively close to the vehicle. Monitoring device. 3. A platform safety monitor according to claim 1, wherein said beam light irradiating means has a scanning drive means for displacing said beam light to scan a train door surface in a vertical direction. apparatus. 4. The reflected light beam detecting means detects reflected light of the light beam applied to at least a lower end portion of a door surface of a train and generates reflected light beam pattern information. Item 4. The safety monitoring device for a platform according to item 1, 2 or 3.