JP2001130404A - Danger detecting informing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a danger detecting and informing system capable of executing the display for calling the attention to danger, detecting the falling, displaying a position of the falling, and informing the falling or the like with respect to a system for detecting, informing and displaying the falling from a platform. SOLUTION: This system comprises an X-direction detecting part consisting of an X-direction luminescent element 1 and and-direction light receiving element 2, a Y-direction detecting part consisting of a Y-direction luminescent element 3 and a Y-direction light receiving element 4, and a control processing part 5 allowing the X-direction luminescent element 1 and the Y-direction luminescent element 3 to emit the light when a vehicle approaches a platform, judging the occurrence of the falling on the basis of detection signals on the movement and passage of an article to the point side of the platform output from the X-direction light receiving element 2 and the Y-direction light receiving element 4, displaying the falling with a luminescent color of the X-direction luminescent element of a falling position block, and informing the falling to the vehicle approaching the platform.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for quickly detecting a fall from a platform, displaying the location of the fall, notifying the driver of a vehicle approaching the platform, and emergency braking before the fall position. The present invention relates to a danger detection notification system that enables a stop by a device and a light emission display for fall prevention.

[0002]

2. Description of the Related Art There is known a means for determining a fall accident from a platform by detecting an object on a track and notifying a vehicle approaching the platform to perform an abrupt stop (for example, Japanese Patent Laid-Open No. 5-124513). Reference). There is also known a means for detecting an object that has fallen on a track by a sensor (for example, see Japanese Patent Application Laid-Open No. 7-329772). There is also known a detecting means for judging the presence or absence of a fall by image processing such as a difference processing between an infrared image of a home taken by an infrared camera and a background image taken in advance (for example, see Japanese Patent Application Laid-Open No. 9-021856). ).

There is also known a means for detecting a vibration caused by a fall on a track and determining whether or not a fall has occurred by analyzing a vibration waveform thereof (for example, Japanese Patent Laid-Open No. 9-1937).
No. 89). There is also known a configuration in which a lamp buried in a platform is blinked to notify a passenger that a vehicle is approaching. In this case, only the attention of the approach of the vehicle is called, and the fall detection is not performed.

[0004]

A general platform is provided with a white line or an uneven block at the front end thereof, and when a vehicle is approaching, a caution is taken so that the platform does not come out of the track side from the white line or the uneven block. . However, even with such a caution sign, the accident of falling on the track is constant, and monitoring of station staff alone is not sufficient. Therefore,
Means for detecting a fall on a track, means for notifying an approaching vehicle when a fall is detected, and stopping the vehicle just before the fall position have been proposed.

[0005] However, the white line and the uneven block provided in parallel with the track on the platform indicate a prima facie safety zone when the vehicle enters, and are not enough attention given to passengers to prevent falling. In addition, the approach of the vehicle by blinking a lamp embedded in the platform or the like is often used also as the display of the boarding / alighting position, so that a certain effect can be obtained, but it cannot be said to be a strong attention. . SUMMARY OF THE INVENTION It is an object of the present invention to provide a passenger with strong attention and to quickly detect a fall to enable the display of the position and the notification to an approaching vehicle.

[0006]

According to the present invention, there is provided a danger detection / reporting system comprising: (1) a front end side of a platform for getting on and off a vehicle;
An X-direction detection unit including a plurality of X-direction light-emitting elements 1 arranged at predetermined intervals along the longitudinal direction of the home, and a plurality of X-direction light-receiving elements 2 for receiving light from the light-emitting elements 1; A plurality of Y-direction-arranged light-emitting elements 3 that emit light in the longitudinal direction, and a plurality of Y-direction-arranged light-receiving elements 4 that receive light from the light-emitting elements 3; A light emission control function for causing the X-direction light-emitting element 1 and the Y-direction light-emitting element 3 to emit light and stopping the light emission when the vehicle arrives at the home; Control processing having a control function of making a danger notification when the passing direction of the object is determined to be the front end of the home based on the detection signals from the X-direction light receiving element 2 and the Y-direction light receiving element 4 during the light emission of Part 5 and It is provided.

[0007] (2) The X-direction arranged light-emitting element has a configuration capable of switching to a plurality of emission colors, and the control processing unit performs light emission between the X-direction arranged light-emitting element and the Y-direction light-emitting element. X
When it is determined that the passing direction of the object is the direction of the front end of the home based on the detection signals of the light receiving element arranged in the direction and the light receiving element arranged in the Y direction, the emission color of the light emitting element arranged in the X direction corresponding to the passing block of the object is switched and a danger notice is issued. It has a configuration to perform.

(3) The control processing section 5 causes the Y-directionally arranged light emitting elements to emit light in accordance with the detection signal of the approach of the vehicle to the home, and turns on or blinks the emission color of the X-directionally arranged light emitting elements as a danger display color. A warning display is performed, and the X-direction arranged light emitting element and the Y
A configuration is provided for performing control to stop light emission of the directionally arranged light emitting element.

(4) A plurality of light emitting elements arranged in the X direction and light receiving elements arranged in the X direction arranged in the longitudinal direction of the home are arranged in a plurality of rows at predetermined intervals in the direction of the front end of the home. During the light emission of the arranged light emitting element and the Y direction arranged light emitting element, the object passing is detected by the X direction arranged light receiving element and the Y direction arranged light receiving element. , When there is no return direction indicating the home tip direction, it is determined that the object has fallen from the home,
A control structure is provided for notifying a vehicle approaching the platform of a fall on the track and switching the emission color of the light emitting element arranged in the X direction of the block indicating the fall position to make a danger report.

(5) A plurality of Y-directionally arranged light-emitting elements for emitting light in the longitudinal direction of the home and a plurality of Y-directionally arranged light-receiving elements for receiving light from the light-emitting element are arranged at a predetermined distance from a line perpendicular to the home. The light emitting elements arranged in the X direction and the light emitting elements arranged in the Y direction are arranged at intervals on the lines inclined at an angle.
The object passing is detected by the light receiving element arranged in the X direction and the light receiving element arranged in the Y direction during light emission with the light emitting element arranged in the direction.
When there is no return direction indicating the front end direction of the home, it is determined that the object has fallen from the home, and a vehicle approaching the home is notified of a fall on the track, and a light emitting element arranged in the X direction of a block indicating the fall position is provided. A control structure for switching the emission color and performing a danger notification is provided.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory view of an embodiment of the present invention, wherein 1 is an X-direction light emitting element, 2 is an X direction light receiving element, 3 is a Y direction light emitting element, and 4 is a Y direction light emitting element. Reference numeral 5 denotes a control processing unit, 6 denotes a light emission drive unit, 7 denotes an approach detection unit, 8 denotes an arrival / departure detection unit, and 9 denotes a danger notification unit.

A plurality of light emitting elements are arranged along the longitudinal direction of the home. Each light from the X direction arranged light emitting element 1 is arranged so as to be able to enter each light receiving element of the X direction arranged light receiving element 2. The light from the Y-direction light-emitting element 3 arranged orthogonal to the X-direction light-emitting element 1 is arranged so as to be able to enter each light-receiving element of the Y-direction light-receiving element 4, and the X and Y-direction light-receiving elements 2 are arranged. , 4 are input to the control processing unit 5. The control processing unit 5
The arrangement positions of the light receiving elements 2 and 4 arranged in the X and Y directions can be identified. For example, the X-direction arranged light receiving element 2 is scanned from one end to the other end to determine the presence or absence of a light reception output signal.
Therefore, a position where there is no light reception output signal can be identified as a detection position. In this case, the light receiving element 2 arranged in the Y direction
Is detected by the number of light receiving elements corresponding to the size of the object, so that in the case of detecting only one light receiving element, it is also possible to perform a determination process that is ignored.

The control processing unit 5 blocks the light incident on the light receiving elements 2 and 4 arranged in the X and Y directions due to the passage of the object, so that the position of the object passage can be identified by the detection signal. Based on the position, the distance from the end of the platform can be calculated, and the distance can be notified to the driver of the vehicle. In accordance with the control from the control processing unit 5, the light emission drive unit 6 controls the simultaneous emission of the light emitting elements 1 and 3 arranged in the X and Y directions or the switching control of the light emission color for the light emitting element 1 arranged in the X direction or the block unit. Light emission drive control such as light emission display is performed.

The approach detecting section 7 can adopt a generally employed configuration for displaying the approach of the vehicle to the platform. Further, the arrival / departure detection unit 8 can also adopt the configuration already adopted. The danger reporting unit 9 reports a danger such as a fall accident on a track by a communication means such as a wireless communication with a vehicle, and uses a leaky coaxial cable wireless communication method or a normal wireless communication method. The present invention can be applied and displayed on a display device on a vehicle, or a report of a fall position can be performed by generating an alarm sound, lighting a sound or a danger indicator lamp, or the like. Thereby, the vehicle can operate the emergency control device and stop suddenly, so that it is possible to take quick measures against a fall accident.

FIG. 2 is an explanatory view of the arrangement of the light emitting element and the light receiving element according to the first embodiment of the present invention.
1 is a buried portion of the X-direction arranged light emitting element 1, 12 is a support of the X-direction arranged light receiving element 2, 13 is a support of the Y-direction arranged light emitting element 3, 14 is a support of the Y-direction arranged light emitting element 4, x11,
x12, x13, ..., y11, y12, y13, ...
.. Are light-emitting elements such as light-emitting diodes, x21, x22,
.., y21, y22, y23,... indicate light receiving elements such as photodiodes.

That is, the light emitting element 1 arranged in the X direction is configured by arranging the light emitting elements x11, x12, x13,... At predetermined intervals along the longitudinal direction of the home 10, for example, at 50 cm intervals. , At the position of the white line of the platform 10 or on the track side. The light receiving elements 2 arranged in the X direction are light emitting elements x11, x12, x13,.
The light receiving elements x21, x22, x23,... Are arranged on the support portion 12 provided on the ceiling or the like so that light from the light source can enter. If the home 10 does not have a ceiling, both ends of the support portion 12 can be fixed at a predetermined height by columns.

The light emitting element 3 arranged in the Y direction is
The light emitting elements y1 are arranged at predetermined intervals, for example, at intervals of 50 cm.
, Y12, y13,... Are arranged, and the light-receiving elements 4 arranged in the Y-direction
The light receiving elements y21, y22, y23,... Are arranged so that light from the light receiving elements 12, y13,. In this case, a light-emitting element for high-luminance emission has also been developed, and by using a condensing lens, the light-receiving elements y21, y22, and y2 can be used even when the home length is about 500 m or more.
The light-emitting elements y11, y12, y13,.
・ Light from the object can be detected.

A case is shown in which the light emitting element 3 arranged in the Y direction is arranged closer to the distal end of the home 10 than the light emitting element 1 arranged in the X direction. In contrast, the light emitting element 1 arranged in the X direction is arranged closer to the distal end of the home 10. You can also. It is also possible to arrange them on substantially the same plane. Also, to detect a fall on the track,
Although it is desirable to provide at the tip side of the home 10, when the X direction arrangement light emitting element 1 is used for a vehicle approach warning,
The position of the white line generally used is suitable. In this case, the light-emitting element 1 is turned on with a danger display color, for example, red, and furthermore, is controlled to blink, and can be used for alarm display. In this case, since a high-luminance red light-emitting diode or the like has been developed, by applying such a light-emitting element, it is possible to draw strong attention to passengers.

In the state where the light emitting elements 1 and 3 arranged in the X and Y directions emit light, when an object moves to the tip side of the home 10, the light receiving elements 2 and 4 arranged in the X and Y directions corresponding to the position.
, And the received light output signal is zero or significantly lower than a predetermined level. This is determined in the control processing unit 5, and the moving position of the object can be identified. For example, the light receiving element x23 and the light receiving elements y21, y22, y2
When the light receiving output signal with the signal 3 becomes zero or less than a predetermined level,
It can be determined that the object at the height of the light receiving element y23 has moved the position of the light receiving element x3. Therefore, when the user moves to the tip side of the platform 10 and falls on the track below the platform 10, the position can be recognized. Also, the light receiving element y2
When only three light reception output signals become zero or a predetermined level or less, it can be estimated that something has flown due to the wind. That is, the size of the falling object can be determined by the light receiving element 4 arranged in the Y direction.

In this case, in order to prevent erroneous detection due to external light, the light emitting elements 1 and 3 arranged in the X and Y directions are driven by a modulation signal to emit light, and the light receiving elements 2 and 4 arranged in the X and Y directions are arranged.
The modulation signal is extracted from the received light output signal, and even when the level of the received light output signal is high, if the modulation signal cannot be extracted, it can be determined that the external light is incident but the object has moved halfway. . As a modulation method of the drive signal in this case, for example, PPM (Pulse Position Modulat
Various known methods such as an ion (pulse position modulation) method can also be applied.

FIG. 3 is an explanatory view of a light emitting element, a light receiving element, and a light emission driving section.
In the figure, reference numeral 23 denotes a light emitting diode housed in, for example, an epoxy resin case, 24 denotes a solid lens, 25 denotes a photodiode with a condenser lens, and 26 denotes a case having a light shielding wall. Since the solid lens 24 has a function of an internal lens and an external lens,
The light of the light emitting diode 23 can be focused and emitted. Therefore, even when the distance from the photodiode 25 is set to about 500 m, the detection level of the photodiode 25 can be maintained. The light receiving element is not limited to a photodiode, but may be a phototransistor, a photothyristor, or any other element capable of outputting a signal by receiving light. It is also possible to add the above-mentioned solid lens to the light receiving element.

FIG. 3B shows a light emitting element 1 arranged in the X direction.
1 and 2 denote the same parts, and show a case where the light emission drive unit 6 includes a drive circuit 31 and a selection control circuit 32. The drive circuit 31 has a configuration for controlling ON / OFF of the drive current corresponding to the light emitting elements x11, x12, x13,.
.. Performs selection control such as whether to cause the light emitting elements x11, x12, x13,... To emit light all at once or only the selected light emitting elements to emit light, and operates according to a control signal from the control processing unit 5. I do. In addition, the light emitting element 3 arranged in the Y direction
Does not need to selectively emit light, the light emission drive unit 6 corresponding to the light emitting element 3 arranged in the Y direction can have a configuration in which the selection control circuit is omitted.

For example, when a vehicle is approaching the platform, a signal detected by the approach detector 7 (see FIG. 1) is input to the control processor 5. The control processing unit 5 thereby outputs X,
The light emission command of the light emitting elements 1 and 3 arranged in the Y direction is applied to the light emission drive unit 6. Thereby, the selection control circuit 32
By driving all the driving circuits 31, the light emitting elements x11, x1
2, x13, ... are emitted. Similarly, all the light emitting elements arranged in the Y direction emit light. When the vehicle arrives at the platform 10, a fall accident does not occur. Therefore, according to the detection signal of the arrival / departure detection unit 8, the control processing unit 5 executes X, Y
Light emission of the directionally arranged light emitting elements 1 and 3 is stopped.

A light receiving element x2 corresponding to the light emitting element x15
When the fall is detected at the position of No. 5, the control processing unit 5 determines whether the light emitting element x15 or the plurality of light emitting elements x14 and x16 around the light emitting element x15 are present.
Is instructed to selectively emit light in the block Ba including. in this case,
The emission color can also be specified. That is, the light emitting element is 2
The light emitting diodes of three colors or three colors are enclosed in the same epoxy resin case, for example, and the selection control circuit 32 controls the drive circuit 31 corresponding to the light emission color according to the control of the selected light emission color from the control processing unit 5. Will be. Also in this case, light emission can be controlled in units such as the block Ba.

FIG. 4 is an explanatory view of the arrangement of light emitting elements and light receiving elements according to a second embodiment of the present invention. The light emitting elements are arranged in a plurality of rows as shown in FIG. 4 as light emitting elements X11, X12 and X13. The light receiving elements X21, X22, and X23 are arranged facing each other, and the light emitting element 3 arranged in the Y direction and the light receiving element 4 arranged in the Y direction have the same configuration as that shown in FIG.

In this case, it is desirable that the X-direction light-emitting elements X11 are located at a position near the tip of the home 10, and the X-direction light-emitting elements X12 and X13 are arranged at predetermined intervals. Therefore, the light emitting elements X11, X12,
X13 and X3 are all emitted, and when no object exists, the X and Y direction light receiving elements X21, X22, X23,
No. 4 outputs a light receiving output signal.

When the object moves toward the tip of the home 10, the object detection (zero light reception output signal) is performed at X13, X
12, X11, and the light receiving element 4 arranged in the Y direction.
Is also performed. Then, X11, X
When object detection is performed in the order of 12, X13, the home 10
, The control processing unit 5 continues to control each unit as it is. X11, X12, X13
If the object detection is not performed in the order of, the object movement is also detected by the Y-direction arranged light receiving element 4, and the control processing unit 5 moves the object toward the front end of the home 10, and Judge as a fall accident, the position,
As described above, the danger notification unit 9 is controlled to notify the vehicle,
In addition, by controlling the light emission drive unit 6, the display can be performed by switching the emission color in units of the light emitting element at the falling position or the block adjacent thereto. Such a determination process of the control processing unit 5 can be easily realized by a program for controlling the processor. In this case, when the child or the drunk person meanders the detection position, the control processing unit 5 determines
By controlling the light emission drive unit, it is also possible to switch the light emission color and display the danger state by blinking or the like.

FIG. 5 is an explanatory view of the arrangement of the light emitting element and the light receiving element according to the third embodiment of the present invention. The light emitting element 1 arranged in the X direction and the light receiving element 2 arranged in the X direction have the structure shown in FIG. And the light emitting element 3 arranged in the Y direction and the light receiving element 4 arranged in the Y direction
The light emitting elements y1 are provided at predetermined intervals from the front end side of the home 10 toward the inside by a predetermined angle θ from a line perpendicular to the home 10 at predetermined intervals θ.
1, y12, and y13 are provided, and the light receiving elements y21, y22, and y23 are provided on the support portion 34 that is inclined correspondingly. When projected onto the home 10, the light emitting element y1 is provided.
1 is Y11, light emitting element y12 is Y12, light emitting element y13
Is the position of Y13.

Accordingly, when the object moves to the front end side of the home 10, the light is detected in the order of the light receiving elements y23, y22, y21.
Since the movement of the object is detected by the light receiving element 2 arranged in the X direction, the control processing unit 5 determines that the vehicle has fallen from the platform 10. In this case, the number of light emitting elements and light receiving elements can be reduced as compared with the case shown in FIG.

FIG. 6 is an explanatory view of the detection position. FIG. 6A shows the case of the arrangement shown in FIG. 2, in which the light receiving element y2i opposed to the light emitting element y1i arranged in the Y direction and the light receiving element arranged in the X direction. When the control processing unit 5 detects that the object has moved in the direction of the dotted arrow (in the direction of the tip of the home) based on x2j, the control processing unit 5 determines that the object has fallen from the home 10 and identifies the position of the light receiving element x2j. be able to. As a result, as described above, the vehicle can be notified and the light emitting elements arranged in the X direction corresponding to the falling position in block units can be made to emit light to notify the surroundings. Can be.

FIG. 6B shows the case of the arrangement shown in FIG. 4, in which the light receiving elements x2j3, x2j2 and x2j1 are arranged in the direction of the dotted arrow (the direction of the front end of the home).
When the movement of the object is detected by the light receiving elements y2i arranged in the Y direction, the light receiving elements X11, X arranged in the X direction are reversed in the reverse order.
When the detection is performed based on the zero light receiving output signal by any of the light receiving elements 22 and X23, even if the light receiving element once moves to the leading end of the home, it can be determined that the light is returned. Therefore,
The control processing unit 5 continues the control of each unit as it is, as described above.

However, after the object is detected by the light receiving element x2j1, if there is no detection by another light receiving element, it can be determined that the object has fallen from the front end of the home. Then, as described above, notification to the vehicle and display of the fall position by light emission of the light emitting element arranged in the X direction in units of blocks or the like are performed.

FIG. 6C shows the case of the arrangement shown in FIG. 5, and the light receiving elements y corresponding to the arrays Y13, Y12, Y11 along the direction of the dotted arrow (the direction of the front end of the home).
When the movement of the object is detected in the order of 23, y22, y21 and the movement of the object is detected by the light receiving elements x2j arranged in the X direction, thereafter, the movement of the object is not detected in the order of the light receiving elements y21, y22, y23. In that case, it is determined that the object has fallen from the platform, and as described above, the notification to the vehicle,
The display of the falling position by the light emission of the light emitting element arranged in the X direction in the block unit or the like is performed.

Also, as described above, the X, Y on the tip side of the home
Since it is possible to detect that the object has crossed on the coordinate plane, the position is displayed on the X and Y coordinate planes on the monitor screen controlled by the control processing unit 5 described above, and the light emitting element selection control and the announcement are performed. It is also possible to take measures to call attention, and to improve safety. In addition, after the vehicle arrives at the platform, the light emitting element can continue to emit light and be monitored until the vehicle departs and moves a predetermined distance.

[0035]

As described above, according to the present invention, the light emitting elements 1 and 3 arranged in the X and Y directions and the X and Y
The light receiving elements 2 and 4 are arranged in the directions, and while the vehicle is approaching the platform, the light emitting elements 1 and 3 in the X and Y directions are made to emit light. It is possible to notify passengers, and a home fall is detected by the light receiving elements 2 and 4 arranged in the X and Y directions, the position is determined by the control processing unit 5, and the approaching vehicle is notified,
Further, there is an advantage that the falling position is displayed by the selective light emission control of the light emitting element 1 arranged in the X direction, so that quick rescue can be performed.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of an embodiment of the present invention.

FIG. 2 is an explanatory diagram of an arrangement of light emitting elements and light receiving elements according to the first embodiment of the present invention.

FIG. 3 is an explanatory diagram of a light emitting element, a light receiving element, and a light emission driving unit.

FIG. 4 is an explanatory diagram of an arrangement of light emitting elements and light receiving elements according to a second embodiment of the present invention.

FIG. 5 is an explanatory diagram of an arrangement of light emitting elements and light receiving elements according to a third embodiment of the present invention.

FIG. 6 is an explanatory diagram of a detection position.

[Explanation of symbols]

 Reference Signs List 1 light emitting element arranged in X direction 2 light emitting element arranged in Y direction 3 light receiving element arranged in X direction 4 light receiving element arranged in Y direction 5 control processing unit 6 light emission driving unit 7 approach detection unit 8 arrival / departure detection unit 9 danger notification unit

Claims (5)

[Claims] 1. A plurality of X-direction light-emitting elements arranged at predetermined intervals along a longitudinal direction of a home on a leading end side of a home for getting on and off a vehicle, and a plurality of X-directions for receiving light from the light-emitting elements. An X-direction detection unit including a light-receiving element arranged; a plurality of light-emitting elements arranged in a Y-direction that emit light in the longitudinal direction of the home; and a plurality of Ys that receive light from the light-emitting element.
A Y-direction detection unit including a direction-arranged light-receiving element; and a light-emitting unit that emits light when the vehicle arrives at the home, at least while the vehicle is approaching the home, causes the X-direction-arranged light-emitting element and the Y-direction-arranged light-emitting element to emit light. A light-emission control function for stopping the light emission and a detection signal between the X-direction light-receiving element and the Y-direction light-receiving element during light emission of the X-direction light-emitting element and the Y-direction light-emitting element allow passage of an object. A danger detection notification system, comprising: a control processing unit having a control function of performing a danger notification when the direction is determined to be the home front end direction. 2. The X-direction arranged light-emitting element has a configuration capable of switching to a plurality of light-emitting colors, and the control processing unit includes:
The detection signal of the X-direction light-receiving element and the Y-direction light-receiving element during the light emission of the direction-arranged light-emitting element and the Y-direction light-emitting element, when it is determined that the passing direction of the object is the home tip direction, 2. The danger detection notification system according to claim 1, wherein a danger notification is performed by switching a light emission color of the light emitting element arranged in the X direction corresponding to a passing block of the object. 3. The control processing unit causes the Y-direction arranged light-emitting element to emit light in accordance with a detection signal of a vehicle approaching to the home, and turns on or blinks the emission color of the X-direction arranged light emitting element as a danger display color. A warning display according to (1), and a control for stopping light emission of said X-direction light-emitting element and said Y-direction light-emitting element in accordance with a detection signal that said vehicle has arrived at said platform. The danger detection notification system according to 1 or 2. 4. The X arranged in a longitudinal direction of the home.
The direction arrangement light emitting element and the X direction arrangement light receiving element are arranged in a plurality of rows at a predetermined interval in the front end direction of the home, and the control processing unit includes the X direction arrangement light emitting element and the Y direction arrangement light emitting element. During the emission of light, the object passing is detected by the light receiving elements arranged in the X direction and the light receiving element arranged in the Y direction, and the order of detecting the object passing by the light receiving elements arranged in the plurality of rows in the X direction indicates the direction of the front end of the home. When there is no return direction, it is determined that the object has fallen from the platform, and a vehicle approaching the platform is notified of a fall on the track, and the emission color of the light emitting element arranged in the X direction in a block indicating the fall position. The danger detection notification system according to any one of claims 1 to 3, further comprising a control configuration for performing a danger notification by switching between the two. 5. A plurality of Y-directionally arranged light emitting elements for emitting light in the longitudinal direction of the home and a plurality of Y-directionally arranged light receiving elements for receiving light from the light emitting element, the plurality of light emitting elements being arranged from a line perpendicular to the home. Arranged at intervals on the lines inclined at an angle, the control processing unit controls the X-direction light-receiving element and the Y-direction arrangement during light emission of the X-direction light-emitting element and the Y-direction light-emitting element. The object passing is detected by the light receiving element, and the detection order of the object passing by the plurality of Y-direction arranged light receiving elements indicates the home tip direction and when there is no return direction, it is determined that the object has fallen from the home, It is provided with a control structure for notifying a vehicle approaching the platform of a fall on a railroad track and performing a danger report by switching the emission color of the light emitting element arranged in the X direction of a block indicating a fall position. The danger detection notification system according to any one of claims 1 to 3.