JP5559593B2 - Monitoring system - Google Patents

Description

  The present invention relates to a monitoring device for a monitoring system for confirming the safety of a train door, and more particularly to a monitoring device for a monitoring system for confirming the safety of a train door for confirming an abnormal closing of a train door at a low cost. About.

Conventionally, when a train stops at a platform of a station and the door of the train vehicle is closed at the time of departure, if the vehicle is not completely closed, the vehicle side light (vehicle side indicator light) above the door is turned on.
This state where the door is not completely closed may occur when the inside of a train is congested, such as during a rush hour, or when the passenger's clothing, luggage, the passenger's own body, etc. are sandwiched by the door.

Here, as a cause of the pinching by the door, there is a cause of low urgency such as a passenger's belonging, for example, an end of a bag, which is easily solved by re-opening and closing and does not greatly affect the safety of the passenger. On the other hand, there are also highly urgent causes that can lead to serious injuries, such as passengers getting caught.
You can check the video from the surveillance camera on the monitor in the station staff room or the command station for the video where the car side lights do not turn off due to the door not closing. However, in the conventional camera image, the entire vehicle side of about 2 to 4 cars is copied with one camera, and it is difficult to confirm when the sandwiched one is small.
For this reason, if the object caught in the surveillance camera image alone is small, whether the cause of the pinching is less urgent, such as a bag, or is urgent in terms of safety like a human hand There was a problem that it was difficult to judge whether it was a thing.
For this reason, in order to grasp | ascertain correctly the condition of a door closing, for example, the station clerk had to rush to the place and visually confirmed at a short distance, and it took time to grasp the situation. This hindered the scheduled train operation, especially during rush hours.
Under such circumstances, in order to smoothly operate while ensuring the safety of passengers, a system capable of grasping door closing with a monitoring camera has been desired.

  Here, as a monitoring system for safety confirmation of a conventional train door, referring to Patent Document 1, a door open / close sensor that individually detects the door open / close of each vehicle of the train, and installed in the train or platform, One or a plurality of monitoring cameras for photographing the vicinity of the doors of the vehicles of the train that is stopped at the platform, and the positions of the doors of the trains that are installed at the train or the platform and stop at the platform Door position storage means, door automatic selection means for selecting and specifying the door when the door opening / closing sensor detects a door that is not completely closed, and is installed in the train or platform. Based on the information stored in the door position storage means, the corresponding surveillance camera among the surveillance cameras is photographed so as to photograph the vicinity of the door selected and designated by the automatic door selection means. There is described a train door safety confirmation system comprising camera operation means for operating the position and orientation of a camera or lens magnification, and a monitor TV installed on the train or platform and displaying an image taken by the monitoring camera. (Hereinafter referred to as Conventional Technology 1).

The door safety confirmation system for trains of the prior art 1 displays the door that has received the open state signal from the door open / close sensor on the terminal (see paragraph [0039] in the description of the prior art 1 and FIG. 2), When recognized, operate the key (refer to paragraph [0041] of prior art 1), move along the rail toward the corresponding door (refer to paragraph [0037] of prior art 1 and FIG. 3), point the camera, and Control is performed so as to automatically adjust the lens magnification (see paragraph [0051] of Prior Art 1).
As a result, if there is one crew member or station employee who confirms the safety of the conventional train door and monitors the display of the door state display means and the image of the monitor TV, the train or the long train that stops at the platform with poor visibility It is possible to check the door safety efficiently and reliably for the other trains.

JP-A-9-71240

Here, referring to paragraph [0056] of the specification of the prior art 1, when a door that is not completely closed is detected, the door is automatically designated as a monitoring target door, and the monitoring target door is assigned to the camera control unit. A configuration in which a designated signal is given for monitoring is also disclosed.
However, referring to paragraph [0036] of the specification of prior art 1, it is necessary to receive a door opening / closing signal of a door opening / closing sensor provided in a train by a communication device as means for detecting a door that is not completely closed. there were.
For this reason, there is a problem that it is necessary to provide a dedicated communication device, which is costly.

  This invention is made | formed in view of such a condition, and makes it a subject to eliminate the above-mentioned subject.

The monitoring system of the present invention includes an imaging unit that is provided in a railway platform and acquires an image, and a light emitting unit that is provided in association with the door in the vicinity of the door of the railway vehicle from the image acquired by the imaging unit. An image processing unit that detects a light emission pattern according to the distance between the door gaps, and an image is zoomed up to the door position detected by the image processing unit according to the light emission pattern detected by the image processing unit. And a control unit for controlling the imaging unit.
  In the monitoring system of the present invention, the light emission pattern includes information related to a vehicle in addition to information related to a distance between the door gaps, and the image processing unit is associated with the door from an image acquired by the imaging unit. Information on the vehicle is detected according to a light emission pattern of a light emitting unit provided.
  In the monitoring system of the present invention, the control unit superimposes information detected by the image processing unit on the image acquired by the imaging unit.
  In the monitoring system of the present invention, the control unit acquires and displays the flight name and vehicle name in the timetable of the railway vehicle that is stopped from the information related to the vehicle, and displays information related to the stop time and operation. It is characterized by being displayed.

  According to the present invention, there is no need for a dedicated communication device by recognizing that the vehicle side light is lit and zooming in on the door to capture an image. can do.

It is a block diagram which shows the control structure of the vehicle door part 2 which concerns on embodiment of this invention. It is a block diagram which shows the control structure of the monitoring apparatus 3 which concerns on embodiment of this invention. It is a flowchart of the door closing monitoring process which concerns on embodiment of this invention. It is an example of a screen at the time of zooming out of the monitoring monitor 110 of the monitoring device 3 according to the embodiment of the present invention. It is an example of the screen at the time of zoom-in of the monitoring monitor 110 of the monitoring apparatus 3 which concerns on embodiment of this invention.

<Embodiment>
[Control configuration of monitoring system X]
Hereinafter, a monitoring system X according to an embodiment of the present invention will be described with reference to the drawings.
Referring to FIG. 1 and FIG. 2, the monitoring system X is a monitoring system for confirming the safety of a train door. The monitoring system X is installed in a vehicle door section 2 provided in a train vehicle and mainly at a platform of a train station. And a monitoring device 3 that is disposed and installed to monitor door opening and closing.

(Control configuration of vehicle door 2)
First, with reference to FIG. 1, the vehicle door part 2 which is the vehicle side apparatus which concerns on embodiment of this invention is demonstrated. The vehicle door unit 2 is provided in the vehicle 1 and includes the door 20, the vehicle side lamp 30, the sensor control unit 200, the blinking control unit 230, the sensor 240, and the door opening / closing switch 270.

A plurality of doors 20 are usually provided on the left and right of the train vehicle 1 and are doors that can be opened and closed electrically by, for example, a driver's instruction so that passengers can go up and down.
The door 20 can be locked so that it does not open during train operation even if there is a slight gap due to being pinched when closed.

The vehicle-side lamp 30 is a vehicle-side indicator lamp such as an LED (Light Emitting Diode) provided on the side surface of the railway vehicle (train) so as to be visible from the outside of the train.
The vehicle side lamp 30 is a door closing indicator lamp. The vehicle side light 30 is configured to be turned on when the door 20 is opened and turned off when the door 20 is closed. That is, when the door is not completely closed when it is closed by pinching or the like, it is lit. Furthermore, in the vehicle door part 2 which concerns on this embodiment, it can blink by the pattern according to the clearance gap distance of a door, ie, the distance of pinching, and can send out as a vehicle side light signal. In the present embodiment, it can be detected that the flashing vehicle side lamp 30 is also lit.
Moreover, the vehicle side light 30 is provided with infrared LED etc. other than normal LED, and it can also be detected with the monitoring camera 60 (FIG. 2), without making the blink pattern feel visually blinking. This infrared flashing pattern can also be transmitted as a vehicle side lamp signal.
In addition, the vehicle side lamp 30 may include LEDs having a plurality of wavelengths such as red, blue, and green, and may be configured to notify the door gap distance based on the hue. This difference in hue can also be transmitted as a vehicle side light signal.

The sensor control unit 200 includes a CPU (Central Processing Unit), a MPU (Micro Processing Unit), a DSP (Digital Signal Processor), and a GPU (Graphics Processing) that control the vehicle door unit 2 in the monitoring process described below. Unit) and the like.
The sensor control unit 200 is a part that controls each part of the vehicle door unit 2. Further, the sensor control unit 200 may be configured to incorporate a nonvolatile storage unit such as a ROM or a flash memory and control each unit in accordance with a program in the storage unit.
In addition, the sensor control part 200 can also alert | report that the door is not closed by transmitting the signal of the sensor 240 to the cab of a vehicle.

The blinking control unit 230 is a CPU, an MPU, or the like, and may include a drive circuit for the vehicle side lamp 30 such as an LED driver for lighting the LED.
The blinking control unit 230 encodes the size of the gap as a blinking pattern or the like using, for example, a gray code according to the door gap distance detected from the sensor 240, and blinks the vehicle side light 30.
At this time, based on the train ID and the vehicle ID (Identification) that can be provided for each vehicle 1, the flight pattern, the position of the vehicle 1, the position of the door in the vehicle 1, etc. Can be encoded as
Also, the status of the platform door can be encoded. Further, information such as a pressure sensor of the sensor 240 described below can be encoded.
The blinking interval is configured to perform visible wavelength communication using high-speed blinking that is difficult for a user of a monitoring system X such as a driver, a conductor, a station clerk, or a command staff. can do. Thereby, a lot of information can be communicated at high speed. Moreover, the effect that a passenger looks good is also acquired.
On the contrary, you may comprise so that the interval and frequency | count of blinking can be detected easily. Thereby, the user of a supervisor can understand door gap distance information by the blinking state.

The sensor 240 is a sensor that measures the door gap distance, and can detect the gap of the door 20 in millimeters using an encoder or the like.
In addition, the sensor 240 includes a pressure sensor or the like, and can detect information on whether the sandwiched object is hard or soft.

The door opening / closing switch 270 is a switch for opening and closing a door in a vehicle cab or the like.
The door opening / closing switch 270 can open and close the door 20 when operated by the conductor or driver (driver).

(Control configuration of monitoring device 3)
Next, with reference to FIG. 2, the control configuration of the monitoring device 3 according to the embodiment of the present invention will be described. FIG. 2 shows a monitoring device 3 that is a home device unit including a part that can be seen from the outside of the vehicle door unit 2 on the side surface of the vehicle when the train is stopped at the platform, and a monitoring camera 60 provided in the platform. The part is shown. In FIG. 2, the same reference numerals as those in FIG. 1 denote the same components.
Among these, the monitoring device 3 includes a zoom lens 40, an electric head 50, a monitoring camera 60, a video distribution unit 70, an image processing unit 80, a superimposing unit 90, a control unit 100, a monitoring monitor. 110.

The zoom lens 40 is an electric zoom lens for freely changing the focal length of the monitoring camera 60 within a predetermined range. The zoom lens 40 can zoom up a portion where the door does not close in conjunction with the electric head 50 described below.
Here, the zoom lens 40 does not simply increase or decrease the lens magnification, but can zoom up / down based on a signal from the control unit 100.
Thereby, even if the number of surveillance cameras 60 is small, the door 20 can be zoomed up to a predetermined size and enlarged, and the image of the door gap can be confirmed based on the zoomed-up image.

The electric head 50 is an electric head for direction control, that is, the surveillance camera 60 is provided on a gantry (not shown), and is a device for fixing the surveillance camera 60 in a free direction.
The electric camera platform 50 moves, for example, the X axis, the Y axis, and the Z axis in accordance with a signal from the control unit 100 to track and monitor the door 20 of the vehicle door unit 2 where the vehicle side light 30 is blinking. The camera 60 can take an image.

The surveillance camera 60 is an imaging device that serves as a surveillance camera body. The monitoring camera 60 is an imaging device that acquires an image using a CCD (Charge Coupled Device), a CMOS (Complementary Metal Oxide Semiconductor) image sensor, or the like.
The monitoring camera 60 can, for example, turn on the vehicle side lamp 30 or image the door 20. The surveillance camera 60 can also capture an image such as an infrared ray in addition to imaging with visible light. Moreover, the monitoring camera 60 may also be provided with a human sensor, a motion sensor, a microphone, etc., for example. Further, when a plurality of surveillance cameras 60 are provided, the camera IDs for distinguishing the surveillance cameras 60 may be provided.
Note that the monitoring camera 60 may be configured not to be a digital camera but to be converted into digital image data using an image / audio encoder (not shown) using a normal television camera.
Further, a plurality of monitoring cameras 60 may be provided, and a plurality of images may be acquired at once using an optical device such as a mirror.
Further, the monitoring camera 60 may include a dedicated optical sensor for detecting a vehicle side light signal in addition to a normal image sensor.
As the monitoring camera 60, an existing station platform camera can be used. For this reason, introduction cost can be reduced.

The video distribution unit 70 is a part such as an image distribution device, a switcher, or an image mixer.
The video distribution unit 70 distributes the image signal from the monitoring camera 60 to the image processing unit 80 and the superimposing unit 90.
Further, when a plurality of surveillance cameras 60, image processing units 80, and superimposing units 90 are provided in the video distribution unit 70, these can be switched by an instruction from the control unit 100.

The image processing unit 80 uses image processing on the image data captured by the monitoring camera 60 to detect flashing, color, infrared pattern, and the like of a plurality of vehicle side lights including the vehicle side light 30. Application Specific Integrated Circuit), a dedicated circuit, and the like.
In addition, the image processing unit 80 may include a flashing pattern recognition unit that is a program or a circuit for performing image recognition. This flashing pattern etc. recognizing unit recognizes the flashing pattern etc. of the vehicle side light 30, decodes the vehicle side light signal, and can obtain the vehicle side light signal data.
Furthermore, the image processing unit 80 includes an image feature amount recognition unit that recognizes image feature amounts, and performs, for example, artificial intelligence that reacts to colors and shapes such as the shape of human skin, hands, and feet, and statistical processing. be able to. For example, the image feature amount recognition unit can detect the shape and color of a human hand using a three-layer neural network.

The superimposing unit 90 converts a video capture card that acquires an image from the monitoring camera 60 from the video distribution unit 70 and door gap distance information output from the control unit 100 into characters, images, and the like and draws the GPU. It is a part with etc. Therefore, the superimposing unit 90 includes character font data, a character generator, a character ROM, and the like.
The superimpose unit 90 displays the monitor image distributed from the video distribution unit 70 on the monitor monitor 110 by superimposing drawn characters and images on the image data acquired by the capture card (superimpose). be able to.

The control unit 100 is an arithmetic control product such as a CPU, MPU, DSP, GPU, or the like that controls each unit of the monitoring device 3.
The control unit 100 may include a nonvolatile storage unit such as a ROM or a flash memory, and may be configured to control each unit according to a program in the storage unit.

The monitoring monitor 110 is a display monitor for the monitoring camera 60 using an LCD (Liquid Crystal Display), a PDP (Plasma Display Panel), an LED (Light Emitting Diode), a CRT (Cathode Ray Tube), a projector, and the like.
The monitoring monitor 110 can display images of a plurality of monitoring cameras 60. When the vehicle side light 30 is blinking after the door is closed, the door 20 can be zoomed and displayed. The monitoring monitor 110 can display a door gap distance and additional information described later.

[Monitoring system X door closing monitoring process]
Next, door closing monitoring processing using the monitoring system X according to the embodiment of the present invention will be described in detail with reference to FIGS.
Below, with reference to the flowchart of FIG. 3, each step which the vehicle door part 2 and the monitoring apparatus 3 perform is demonstrated in detail.

First, in step S101, the sensor control unit 200 of the vehicle door unit 2 performs a door opening / closing determination process.
Specifically, the train opening / closing switch 270 is pressed by the driver's operation in the train vehicle 1 stopped at the normal station platform. Thereby, the door 20 opens and closes by an opening / closing device (not shown).
The door opening / closing signal of the door opening / closing switch 270 is also input to the sensor control unit 200. Thereby, it is determined which movement of the door 20 is to be opened or closed.

Next, in step S102, the sensor control unit 200 of the vehicle door unit 2 performs a sensor operation process.
In this processing, the sensor control unit 200 operates the sensor 240 when the door opening / closing signal is a signal for closing the door 20. Thereby, the sensor 240 acquires the door gap distance.
When the sensor 240 includes a pressure sensor or the like, the hardness of the object (object) that is sandwiched can be measured by the pressure at the time of tightening the gap, and the sandwiched object is like a human body. It is also possible to obtain pressure information about whether it is a soft object or a hard object such as a luggage.

Next, in step S <b> 103, the sensor control unit 200 determines whether the sensor 240 has detected detection of a door closing abnormality. Here, the sensor control unit 200 determines whether or not the door 20 is abnormally closed and does not close completely, that is, whether the door gap distance is equal to or greater than a predetermined distance. In addition, when there are a plurality of doors 20, when even one door 20 is open, it is determined as Yes.
In the case of Yes, the sensor control unit 200 proceeds with the process to step S104 because there is an abnormality.
In No, since the sensor control part 200 has no abnormality, the process of the vehicle door part 2 is complete | finished.

Next, in step S104, the sensor control unit 200 performs a vehicle side light control process.
Specifically, first, the sensor control unit 200 acquires, as door gap distance information, a gap interval that is read by the sensor 240 and that indicates how the door is closed.
On this basis, the sensor control unit 200 encodes, that is, encodes the door gap distance information and the pressure information using, for example, a gray code, and generates vehicle side light signal data. At this time, the sensor control unit 200 can also add information such as the vehicle ID, the flight number, and the position of which door the vehicle 20 is in to the vehicle side light data.
Then, the sensor control unit 200 transmits the vehicle side lamp signal data to the blinking control unit 230.
The blinking control unit 230 controls the blinking pattern and the like by performing blinking operation, visible light communication, infrared communication, and the like on the vehicle side light 30 according to the vehicle side light signal data.
As described above, in the vehicle door portion 2, the door 20 is not completely closed when the door is closed, so that the gap between the doors can be transmitted as a vehicle side light signal such as a blinking pattern of the vehicle side light 30.

This vehicle side lamp signal is sent so that it can be recognized from the outside of the vehicle 1 (timing T101).
The sent vehicle side light signal is detected by the monitoring device 3 with the monitoring camera 60 and other sensors, and various processes are performed. Hereinafter, processing of the monitoring device 3 will be described.

First, the train stopped at the platform includes the door 20 and the vehicle side light 30 by the monitoring camera 60 having the zoom lens 40 and the electric pan head 50, for example, the vehicle side image of the vehicle 1 for 1 to 4 vehicles. Is imaged. In other words, at this time, the surveillance camera 60 is zoomed down (zoomed out) and captures an image at a wide angle (wide side).
The captured vehicle side image is displayed on the monitoring monitor 110 for the monitoring camera 60 and is monitored by the user of the monitoring person.
At this time, lighting of the vehicle side lamp 30 can be detected by an optical sensor (not shown) provided in the monitoring device 3, and this detection signal can be transmitted to the image processing unit 80.

Here, in step S <b> 201, the image processing unit 80 uses the image data from the monitoring camera 60 to perform a vehicle side lamp signal acquisition process. In this processing, the image processing unit 80 detects blinking of a plurality of vehicle side lights including the vehicle side light 30.
Specifically, the image processing unit 80 detects when a vehicle side light signal is transmitted from the image data of the captured vehicle side video and the data of the optical sensor.
Referring to the screen example 500 in FIG. 4, the image processing unit 80 performs image recognition on image data captured from the surveillance camera 60 at a wide angle. For example, the image processing unit 80 detects a predetermined blinking pattern of the vehicle side light. In FIG. 4, it can be detected that the vehicle-side lamp 30 on the rightmost door 20 is blinking.
Note that the surveillance camera 60 can also capture an image of an invisible frequency band such as an infrared image, and therefore can detect an infrared blinking pattern and the like. Furthermore, the color of the vehicle side light signal can be detected as a blinking pattern using a color camera.
On this basis, when detecting a blinking pattern or the like, the image processing unit 80 decodes, that is, decodes to acquire the vehicle side light signal data.

Next, in step S202, the control unit 100 performs zoom-up processing.
In this process, the control unit 100 controls the zoom lens 40 and the electric pan head 50 to zoom up the vehicle door unit 2 of the vehicle 1 having the vehicle side lamp 30 that has detected a blinking pattern or the like. As a result, the monitor monitor 110 automatically displays a zoomed-in image of the door 20 that is abnormally closed.
Specifically, the control unit 100 sends a signal for adjusting the X axis, the Y axis, and the Z axis of the electric camera platform 50 toward the vehicle side lamp 30 detected by the image processing unit 80, and the door 20 captures an image. The zoom lens 40 is zoomed in so as to have a predetermined size in the screen. Then, the control unit 100 causes the monitoring monitor 110 to display an image captured by the monitoring camera 60.
At this time, trapezoidal correction or the like can be performed by the image processing unit 80 or the superimposing unit 90 in accordance with the stop position of the vehicle 1 to make the captured image easy to see.

In this zoom-up process, there may be a situation where the vehicle side lamp 30 is only lit and a blinking pattern or the like cannot be detected. As this situation, a stop of a train that does not support the monitoring system X, a failure of the vehicle 1, a detection error due to the influence of weather such as dense fog, and the like may be considered.
In this case, after detecting a plurality of lit vehicle side lights 30, the control unit 100 is lit after a predetermined stop time has elapsed by a timer (not shown), that is, when the vehicle departs. The vehicle door part 2 of the vehicle 1 with the vehicle side light 30 is zoomed up. In addition to using such a predetermined stoppage time, the vehicle departure may be detected using means such as detection of a departure melody or a buzzer, or detection of an image of the door 20 to be closed.
The control unit 100 may be configured to display the zoomed-up image on another monitor monitor.

Note that the control unit 100 can also detect a specific gap distance of the door 20 by image recognition using the image processing unit 80. At this time, the image processing unit 80 recognizes the edge of the door 20 and can estimate a specific distance from the zoom magnification and the number of pixels of the trapezoidally corrected image.
Furthermore, the control unit 100 can also detect an object (object) that is specifically sandwiched by using the image feature amount recognition unit of the image processing unit 80. For example, referring to FIG. 5, in the screen example 510, an object 530 is detected. At this time, if a human body or the like is sandwiched and it is dangerous in the operation of the vehicle, this can be displayed. Furthermore, when determining whether or not it is dangerous in this operation, information such as a human sensor, a motion sensor, a microphone, or the like of the monitoring camera 60 may be used for recognition.

A screen example 510 in FIG. 5 shows a zoomed-up image. Here, the vehicle side lamp 30 and the door 20 of this vehicle door part 2 can be confirmed.
When a blinking pattern or the like is detected from a plurality of vehicle side lights 30, for example, the vehicle door unit 2 with the vehicle side light 30 farther from the monitoring monitor unit 110 can be preferentially displayed. On this basis, a user such as a conductor, a station staff, or a command staff can instruct to switch the plurality of vehicle door portions 2, and the control unit 100 zooms and displays the vehicle door portion 2 in accordance with the instructions. Is possible.

Next, in step S203, the control unit 100 performs door gap distance information display processing.
In this process, the control unit 100 converts the door gap distance information obtained by decoding from the flashing pattern or the like into specific numerical information of the gap distance, and uses the GPU or the like of the superimposing unit 90. draw.
In addition to the specific distance information, the control unit 100 can also draw additional information by the superimposing unit 90.
The control unit 100 can display the name of the monitoring camera 60 set in advance corresponding to the camera ID as the additional information. In addition, the control unit 100 acquires and displays the flight name, vehicle name, and the like in the timetable of the train that is stopped from the vehicle ID included in the flashing pattern, etc., and displays information related to the stop time and operation, etc. You can also
The drawn characters and images are drawn superimposed on the image of the monitoring camera 60 by the superimposing unit 90.

Referring to the screen example 510 in FIG. 5, the displayed specific distance information and additional information are displayed as a message 550.
It should be noted that the control unit 100 can further zoom in and view the sandwiched object according to an instruction from the user of the monitor. For example, in the screen example 510 of FIG. 5, the control unit 100 controls the electric camera platform 50 and the zoom lens 40 so as to zoom up the object 530 using the information of the image processing unit 80.
Thus, the process of the monitoring device 3 for the door closing monitoring process is completed.

With the configuration described above, the following effects can be obtained.
First, in a conventional monitoring system, when the door is caught, an image in which the vehicle side lamp does not turn off because the door does not close can be confirmed on a monitor in a station staff room or a command station. However, in the conventional camera image, the entire vehicle side of about 2 to 4 cars is captured by one camera. For this reason, if the sandwiched item is small, it is determined from the image whether the cause of the sandwiching is a bag or the like and the urgency is low, or whether it is urgent in terms of safety like a human hand. It was difficult to do.
For this reason, in order to accurately grasp, for example, a station worker needs to rush to the place and visually check at a short distance, and there is a problem that it takes time to grasp the situation.

Moreover, in the prior art 1, it was necessary to receive the door opening / closing signal of the door opening / closing sensor with a communication apparatus.
For this reason, there is a problem that it is necessary to provide a dedicated communication device for the train or the monitoring device, which increases costs.

On the other hand, in the monitoring system X according to the embodiment of the present invention, the vehicle door portion 2 where the vehicle side lamp 30 is not turned off can be automatically zoomed up.
In addition, since the monitoring camera 60 that is installed in the platform and monitors the safety of opening and closing of the vehicle door portion 2 is effectively used to detect the pinching, there is no need to provide a dedicated communication device.
For this reason, the introduction cost of the monitoring system X can be reduced.

Furthermore, the monitoring system X according to the embodiment of the present invention monitors the open / closed state of the door 20 of the train vehicle door unit 2 and displays the door gap distance information on the vehicle side lamp 30 informing the open / closed state of the door, such as a blinking pattern. Can be inserted and sent.
Thereby, since a dedicated communication device is not used, an erroneous operation caused by a passenger's mobile phone or the like can be suppressed, and the safety can be improved.
In addition, the monitoring system X of the present embodiment can detect a door closing abnormality (door closing) quickly by image processing without a delay in control by the communication device.

In addition, although the train stop position has some errors depending on the stop position of the driver, in the conventional technique 1, the door opening / closing signal is received by the communication device.
For this reason, it has been difficult to zoom up the door monitoring camera more appropriately according to the gap of the door in accordance with the error.
Therefore, in the prior art 1, it was only possible to change the lens magnification.

In contrast, in the monitoring system X according to the embodiment of the present invention, it is possible to reliably and quickly identify the cause of the door pinching by providing the monitoring camera 60 with a function of following the vehicle side light 30. it can.
That is, in the monitoring system X according to the present embodiment, the image processing unit 80 recognizes an image captured by the monitoring camera 60 of the vehicle door unit 2 of the station platform, and the control unit 100 and the zoom lens 40 and the electric pan head. 50 in conjunction with the control. The captured image of the monitoring camera 60 can be reliably zoomed up and displayed on the monitoring monitor 110 for the vehicle door portion 2 with the lit vehicle side lamp 30.
Thereby, in the monitoring system X of this embodiment, even if the stop position of a train changes, it can respond automatically.
For this reason, the monitoring system X of this embodiment does not require the monitoring camera unit 60 to be manually adjusted by the user of the monitoring person, and can quickly and accurately recognize an object or a person sandwiched between the doors. It becomes.
That is, it is possible for the user of the supervisor to accurately grasp whether the cause of the pinching is a thing or a person in a shorter time than before.

Moreover, in the monitoring system X of this embodiment, in order to recognize the lighting state of the vehicle side lamp 30 by the image processing unit 80, there is no need for door position storage means for storing the position of each door of the train that stops at the platform. Cost can be reduced.
Further, in the monitoring system X of the present embodiment, it is only necessary to recognize the blinking pattern or the like of the vehicle side light 30 as the vehicle side light signal, so that the circuit for image recognition can be reduced in scale and the cost can be reduced. .
Further, in the monitoring system X of the present embodiment, even if the train is not compatible with the monitoring system X, the position of the vehicle side light 30 is tracked by image recognition even if the lighting is only performed and the blinking pattern or the like cannot be detected. Then you can zoom in to deal with it.

Moreover, in the monitoring system X which concerns on embodiment of this invention, when a door does not close, a vehicle side light can be blinked automatically. At this time, the sensor 240 that measures the degree of opening and closing of the door 20 is provided, and the distance of the gap with respect to the door 20 that has not been closed can be measured. Then, in accordance with the distance of the gap, the blinking control unit 230 changes the blinking pattern of the vehicle side light 30 and sends a vehicle side light signal.
In the monitoring device 3, the distance of the gap of the door 20 acquired from the vehicle side light signal can be displayed on the monitor monitor 110 at the same time as the degree of opening of the gap of the door 20 is grasped by image recognition and zoomed up. Further, additional information corresponding to the camera ID and vehicle ID can also be displayed on the monitoring monitor 110.
Through these processes, the surveillance user can quickly determine whether the cause of the pinching is a cause of low urgency due to an obstacle such as a bag or a cause that is dangerous and urgent like a person. Can accurately grasp.
Therefore, a smoother operation and safety can be ensured when the user of the supervisor performs a visual grasp and makes a comprehensive judgment together with other information.
That is, drivers, conductors, station staff, command staff, and the like who are monitoring images can quickly identify the door portion where the problem has occurred and can take appropriate measures.

  In addition, the monitoring device 3 of the monitoring system X according to the embodiment of the present invention is a monitoring system that monitors the open / closed state of the door 20 of the train vehicle 1 and includes a vehicle side lamp 30 that notifies the open / closed state of the door 20. When there is a monitoring camera 60 that captures the lighting state, an image processing unit 80 that recognizes that the vehicle side lamp 30 is lit when the vehicle 1 departs, and a vehicle side lamp 30 that is recognized by the image processing unit 80, zoom And a control unit 100 that controls the lens 40 and the electric camera platform 50 to take an image of the door 20 on which the vehicle-side lamp 30 is lit.

In addition, the monitoring system X according to the embodiment of the present invention has a plurality of monitoring cameras installed in a station platform for the purpose of monitoring a vehicle door opening / closing unit. It is a monitoring system that automatically and rapidly zooms in on the door portion to obtain detailed information visually and determines the cause of the door pinching accurately and quickly.
As described above, a plurality of monitoring cameras for monitoring the vehicle door portion installed in the station platform are equipped with a zoom lens and a directional control electric head, and the zoom function and direction control of the monitoring camera image are provided. By controlling the function by image recognition, the door portion of the vehicle whose door does not close when the vehicle leaves can be automatically zoomed up, and the cause of the door pinching can be identified accurately and quickly.

In addition, the monitoring system X according to the embodiment of the present invention flashes the vehicle side light of the vehicle to the door that has not been closed, unlike the lighting / extinction of the vehicle side light during normal door opening / closing. Thus, the system is capable of grasping the occurrence and location of door pinching abnormality by a system on the ground platform alone without communicating with a vehicle having door opening / closing signal information.
As described above, in the monitoring system X of the present embodiment, the vehicle side light of the door vehicle that has not been closed although the driver is performing the door closing operation blinks, so that the home side blinks from the monitoring camera. Recognize the image by software-like image processing, and it is possible to determine that the ground home side device alone has an abnormality in opening and closing the vehicle door and specify the location without using a communication device such as radio waves It becomes.
This blinking operation can be easily incorporated into the vehicle 1 of an existing train by including the blinking control unit 230 serving as a drive circuit for blinking the vehicle side lamp.

In addition, the monitoring system X according to the embodiment of the present invention quickly determines a pinch accident by recognizing the gap condition by changing the blinking pattern of the vehicle side lamp according to the difference in the gap of the door on the vehicle side. The monitoring system can contribute to appropriate processing of the user of the monitoring staff.
As described above, in the monitoring system X of the present embodiment, the vehicle door portion 2 includes the sensor 240 that can measure the opening / closing distance, and based on the door gap distance information from the sensor 240, a plurality of distances corresponding to the door gap distance are provided. It is possible to change the flashing pattern and the like by providing the vehicle side lamp drive circuit with the flashing pattern.
Furthermore, from the image of the monitoring camera 60 that has detected the flashing pattern or the like, the flashing pattern or the like can be identified by software processing such as a program, and by displaying the gap distance as information on the monitoring monitor by the flashing pattern or the like, The user of the monitor can quickly recognize the gap distance.

In the present embodiment, the image processing unit 80, the superimposing unit 90, the control unit 100, and the storage unit of a PC (Personal Computer) in which a normal OS (Operating System) is installed are stored in the monitoring device 3. It may be realized by a program. At this time, for example, a video capture card or a video card can be used as the superimposing unit 90.
In addition, each unit in the present embodiment may not be realized by independent hardware, and a plurality of units may be realized by one piece of hardware.

Further, in the monitoring system X according to the embodiment of the present invention, the vehicle side lamp 30 of the vehicle door portion 2 is shown as an object of image recognition, and further, a predetermined mark or the like is painted on the vehicle 1, Based on this, the image processing unit 80 can be used as an auxiliary for image recognition.
For example, the screen example 510 in FIG. 5 shows an example in which the mark 560 is used for assisting image recognition by painting.
This control part 100 can be comprised so that it may recognize that it is the object vehicle of the monitoring system X, when there exists a mark. Further, the vehicle ID can be added with the mark as a two-dimensional barcode or the like. Further, by using this mark, it is possible to perform trapezoidal correction, correction of the position of the vehicle side light 30, correction of the zoom magnification, and the like, and the door gap distance of the door 20 can be accurately obtained.
In addition, regarding the coating of the mark or the like, it is possible to perform the coating using a paint that can be detected only by invisible light such as infrared rays. Thereby, the difference in the design of a normal vehicle can be made inconspicuous.

  Note that the configuration and operation of the above-described embodiment are examples, and it is needless to say that the configuration and operation can be appropriately changed and executed without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Vehicle door part 3 Monitoring apparatus 20 Door 30 Car side light 40 Zoom lens 50 Electric pan head 60 Monitoring camera 70 Image distribution part 80 Image processing part 90 Superimpose part 100 Control part 110 Monitoring monitor 200 Sensor control part 230 Flashing Control unit 240 Sensor 270 Door open / close switch 500, 510 Screen example 530 Object 550 Message 560 Mark X Monitoring system

Claims (4)

An imaging unit provided at a railway platform for acquiring images;
An image processing unit that detects a light emission pattern according to a distance between the doors of a light emitting unit provided in association with the door in the vicinity of a door of a railway vehicle from an image acquired by the imaging unit;
A control unit for controlling the imaging unit to zoom up the image to the position of the door detected by the image processing unit according to the light emission pattern detected by the image processing unit ;
Monitoring system that comprising: a. The light emission pattern includes information on the vehicle in addition to information on the distance between the door gaps,
The said image process part detects the information regarding the said vehicle according to the light emission pattern of the light emission part provided corresponding to the said door from the image acquired by the said imaging part. monitoring system. The control unit may monitor system according to claim 1 or 2 information detected by the image processing unit, characterized in that superimposed on the image acquired by the imaging unit. The control unit acquires and displays a flight name and a vehicle name in a timetable of the railway vehicle that is stopped from information on the vehicle, and displays information related to a stop time and operation. monitoring system according to claim 2 or 3.

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