JP2007045277A - Train approach warning device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a train approach warning device composed of a receiver installed in a railroad line working site, a transmitter installed at a watching point of a front side in the railroad line working site, and a cellular phone transmitting path of radio connecting both. <P>SOLUTION: The train approach warning device comprises: the transmitter 10 which has a camera 11 including an acoustics receiving portion, an object sensing sensor 12, and a communication adaptor 13 with a videophone function processing an image signal input from the camera 11, an acoustic signal, and the object sensing acoustic signal input from the object sensing sensor 12 to transmit it to the cellular phone transmitting path and which is installed at the lookout point; and a receiver 20 which has a cellular phone 21 having the videophone function, an indicator 26 expanding and indicating an image received by connecting to the cellular phone 21, and a monitor 22 with a speaker 24 replaying the received acoustic signal and the object sensing acoustic signal, and which is installed at the railroad line working site. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a train approach warning device, and in particular, a receiver installed at a work site along the railway, a transmitter installed at a lookout point ahead of the work site along the radio, and a wireless mobile phone transmission line connecting the two It is related with the train approach warning device comprised by these.

  Various work along the railroad tracks is carried out in the interval between trains that are not running. In this case, as a measure for preventing accidents at the time of passing a train, a method is generally adopted in which a train watcher is arranged near the work site along the line and the train approaching during the work is monitored. It is necessary to set up a lookout staff about 1 km ahead of the work site along the railway line, and to further establish a lookout staff who transmits the approach of the train to the work place between this lookout work person and the work place. Especially in the curved section where the line of sight of the railroad track is not good, it is necessary to narrow the arrangement interval for setting up the guards, and the number of guards required increases.

Although the duty of the train lookout staff at the railway line work site is heavy, the watch work itself is a monotonous work, so there is a risk of neglecting or forgetting the work or causing an accident. . In view of this, a train approach warning device is used as a train watch auxiliary device to prevent accidents caused by psychological and physiological causes of train watchmen. As train approach warning devices, those described in Patent Documents 1 to 4 are known.
The train approach alarm device is composed of the main body of the train approach alarm device installed at the railway work site and the train passage detector installed in the direction of arrival of the train about 1 km away from the railway work site. They are connected via cables and other transmission lines. When the train detection signal is detected by the train passage detector, the train detection signal is transmitted to the main body of the train approach alarm device installed at the railway line work site via the cable. As a result, the train approach alarm device activates an alarm sound generator to sound an alarm sound, and informs workers on the railway line work site that the train is approaching.
JP 03-301114 A JP 05-016805 JP 10-2111879 JP-A-10-324243

  Construction related to railway tracks includes large-scale construction where work is carried out over a long period of time at one location, and small-scale construction where work is carried out by moving to the next place in a short period of time, such as inspection. is there. In the case of large-scale construction, the ratio of the work volume and work time for installing the train approach alarm device to the total work volume and work time is very small, but it moves to the next place in a short period of time. In the case of small-scale construction where work is carried out, a train approach alarm device is installed for every small work amount and work time, and this ratio increases. It is not easy to lay and remove cables as long as 1 km for every small amount of work and working time. Furthermore, in construction that is carried out for a relatively short period of time or while moving continuously, it takes time and ingenuity to install a train passage detector, or requires a skilled worker, Furthermore, since the installation conditions of the installation location of the train passage detector are inappropriate, there is a problem that leads to avoiding the use of the train approach alarm device itself.

  The present invention implements videophone communication via a wireless mobile phone transmission path between a camera equipped with a communication adapter on the transmitting side and a mobile phone on the receiving side, and an image of an approaching train imaged by the camera By using a configuration in which the object detection acoustic signal generated by the object detection sensor is sent to the receiving side via the communication adapter and received by the mobile phone on the receiving side, a dedicated watch at the lineside work site on the receiving side is adopted. The above-mentioned problem is solved by the operator monitoring the approach of the train by constantly paying attention to the alarm sound generated by the monitor and speaker of the receiver, and issuing an evacuation command to the worker by this watchman A train approach warning device is provided.

[Claim 1] A camera 11 incorporating an acoustic receiving unit, an object detection sensor 12, a video signal and an acoustic signal input from the camera 11, and an object detection acoustic signal input from the object detection sensor 12 are processed. A transmitter 10 installed at a lookout point with a communication adapter 13 having a videophone function to be sent to a mobile phone transmission line;
A mobile phone 21 having a videophone function, and a monitor 22 having a display 26 for enlarging and displaying an image received by connecting to the mobile phone 21 and a speaker 24 for reproducing the received acoustic signal and the object sensing acoustic signal. A train approach alarm device having a receiver 20 installed at a work site along the railway line is provided.

And in Claim 2: In the train approach warning device described in Claim 1,
The object detection sensor 12 constituted a train approach alarm device composed of an infrared sensor or an ultrasonic sensor.
In addition, in the train approach warning device according to claim 3: any one of claims 1 and 2,
In the vicinity of the sound receiving unit built in the camera 11, a repetitive sound generating device 17 that generates sound at regular time intervals such as an electronic metronome is provided,
A train approach warning device is provided in which a blinking light source 16 composed of a point light source such as a light emitting diode is arranged in an area to be imaged by the camera 11.

According to the present invention, an image of an approaching train imaged by a camera that performs videophone communication via a mobile phone transmission path between a transmission-side camera equipped with a communication adapter and a reception-side mobile phone. And an alarm sound generated by the object detection sensor is transmitted via a communication adapter, and this is received by a mobile phone, so that a moving image and an alarm sound indicate that the train has approached the watch point on the transmission side. This makes it possible to immediately recognize the work site along the line that is the receiving side.
Then, a repetitive sound generator is provided in the vicinity of the sound receiving unit incorporated in the camera, and a blinking light source is disposed in a region where the camera is to take an image, and the repetitive sound and the blinking light are received along the work site along the line. By making the watchman recognize, it is possible to constantly monitor the occurrence of a failure on the side of the device that transmits the image including the mobile phone transmission path of the train approach warning device and the occurrence of a failure on the side of the device that transmits the sound. it can.

The best mode for carrying out the invention will be described with reference to FIGS. FIG. 1 shows a transmitter and FIG. 2 shows a receiver.
In the embodiment, the train approach warning device is composed of a transmitter 10 installed at a lookout point about 1 km away along the work site along the line, a receiver 20 installed at the work site along the line, and a wireless mobile phone connecting the two. Consists of a telephone transmission line.
Referring to FIG. 1, a transmitter 10 installed at a lookout point includes a camera 11 incorporating an acoustic receiver, an object detection sensor 12, a video signal and an acoustic signal input from the camera 11, and an input from the object detection sensor 12. And a communication adapter 13 having a videophone function for processing an audio signal to be transmitted and sending it to a mobile phone transmission line. As described above, the camera 11 includes a sound receiving unit (not shown). The detection sensor 12 detects an approaching object and generates an object detection sound signal and also generates an alarm sound. Reference numeral 14 is a transmission side power source, 15 is a tripod, and 16 is a blinking light source. Reference numeral 17 denotes a repetitive sound generator such as an electronic metronome, which is installed in the vicinity of the sound receiving unit built in the camera 11 and generates sound at regular time intervals. The camera 11, the communication adapter 13, and the repeated sound generator 17 are accommodated in a housing 19 and are carried by a tripod 15 together with the object detection sensor 12 and the blinking light source 16. A storage battery or a small generator is used as the transmission-side power source 14.

Referring to FIG. 2, a receiver 20 installed at a work site along a railway line includes a mobile phone 21 having a videophone function and a monitor 22 for displaying an image received by the mobile phone 21 on a display 26 in an enlarged manner. . The mobile phone 21 and the monitor 22 are carried by a tripod 25. As the receiving power source 23, a storage battery or a small generator is used. Reference numeral 24 denotes a speaker. 16 'shows the blinking light source image in the received image.
The communication adapter 13 having a videophone function of the transmitter 10 is a device that has a contract with a mobile phone operator similar to that of a general mobile phone. As the object detection sensor 12, an infrared sensor or an ultrasonic sensor is used. The object detection sensor 12 senses an approaching object, generates an object detection sound signal, generates an alarm sound, and transmits the alarm sound to alert the watcher who is monitoring the monitor 22. The lookout point where the object detection sensor 12 and the camera 11 are installed is generally unmanned. However, the object detection sensor 12 can react to and detect an object other than the train, and thus approaches the camera 11. It also plays a role of detecting an outsider other than the train and animals to generate an alarm sound and warning them so as not to approach the camera 11.

  Here, when carrying out the construction related to the railway track at the work site along the railway line, the receiver 20 is installed at the work site along the railway line on the receiving side, and a lookout point about 1 km away from the work line along the transmission line. The transmitter 10 is installed, and videophone communication is performed between the communication adapter 13 connected to the transmission-side camera 11 and the reception-side mobile phone 21. Although not realistic, it is assumed that the mobile phone 21 and the communication adapter 13 having a videophone function are in a call state with each other during construction. The image of the approaching train imaged by the camera 11 and the object detection acoustic signal generated by the object detection sensor 12 are transmitted from the communication adapter 13 via the wireless mobile phone transmission path, and received by the mobile phone 21. The image received by the mobile phone 21 is transmitted to the monitor 22, enlarged and displayed on the display device 26, and recognized by a dedicated watchman.

When a train approaches a lookout point ahead, the alarm sound and moving image generated as described above are transmitted to the receiving side. As a result, a dedicated watchman at the work site along the line on the receiving side constantly monitors the receiver's monitor display 26 and the alarm sound to monitor the approach of the train, and the watchman recognizes the receiver's monitor. Based on the result, an evacuation order is issued to the worker.
The present invention provides a signal transmission path for connecting a transmitter 10 installed at a lookout point of about 1 km ahead of a lineside work site on the transmission side and a receiver 20 installed on a lineside work site on the receiving side. Adopting mobile phone transmission line without adopting own transmission line. In this case, it is important to secure safety at the work site along the line against a failure caused by the transmission path. The present invention further comprises the following configuration, and copes with ensuring safety at a work site along the line with respect to a failure on the side of an apparatus that transmits an image including a mobile phone transmission line and on the side of an apparatus that transmits sound. .

  In the vicinity of the sound receiving unit built in the camera 11, a repetitive sound generating device 17 that generates sound at regular time intervals such as an electronic metronome is provided, and continuously generated sound is always received by the sound receiving unit. The repetitive sound signal generated by the speaker 24 is signal-processed by the communication adapter and transmitted to the receiver 20 installed on the receiving side along the mobile phone transmission line, and the repetitive sound generated by the speaker 24 on the receiving side. Adopt a configuration to confirm. Here, when the repetitive sound generated at the reception side is interrupted or an abnormality occurs in the sound, it is determined that a failure has occurred on the sound transmitting apparatus side.

  Then, a blinking light source 16 composed of a point light source such as a light emitting diode is arranged in an area to be imaged by the camera 11, and indicates that the blinking light source is blinking in the received image of the display 26 on the receiving side. A configuration for confirming the blinking light source image 16 ′ is employed. Here, when the blinking light source image 16 ′ of the light source cannot be confirmed on the receiving side, it is determined that a failure has occurred on the image transmitting apparatus side.

The figure explaining the Example of a transmitter. The figure explaining the Example of a receiver.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Transmitter 11 Camera 12 Object detection sensor 13 Communication adapter 14 Transmission side power supply 15 Tripod 16 Flashing light source 16 'Flashing light source image 17 Repetitive sound generator 19 Housing 20 Receiver 21 Mobile phone 22 Monitor 23 Reception side power supply 24 Speaker 25 Tripod 26 display

Claims (3)

A camera having a built-in sound receiving unit, an object detection sensor, a video signal and sound signal input from the camera, and an object detection sound signal input from the object detection sensor and processing the television set to send to a mobile phone transmission line Having a transmitter installed at a lookout point with a communication adapter having a telephone function;
Work along the line with a mobile phone having a videophone function and a monitor having a display for enlarging and displaying the received image connected to the mobile phone and a speaker for reproducing the received acoustic signal and the object sensing acoustic signal A train approach alarm device comprising a receiver installed at a site. In the train approach warning device according to claim 1,
The train approach alarm device, wherein the object detection sensor is an infrared sensor or an ultrasonic sensor. In the train approach warning device according to any one of claims 1 and 2,
A repetitive sound generator that generates sound at regular time intervals, such as an electronic metronome, is provided in the vicinity of the sound receiving unit built in the camera,
A train approach warning device characterized in that a blinking light source composed of a point light source such as a light emitting diode is disposed in a region to be imaged by a camera.

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