JPH061239A - Train approach warning device - Google Patents

Abstract

PURPOSE:To make the transmission of train approach to workers more positive. CONSTITUTION:A supervisor A transmits a train approach signal (a) to a radio repeater Q and a receiver R in a work site by a portable radio P, and the radio repeater Q notifies each worker C to that effect by a speaker. Normally, a person (a) in charge of work away from the workers C is informed also by the alarm of the receiver R. The radio repeater Q sends back the receive of the train approach signal (a) as an answer back signal (b), and the portable radio P receives this signal and displays it. The supervisor A can thereby know that the transmission was performed positively.

Description

Detailed Description of the Invention

[0001]

This invention relates to a train (including a train,
The same shall apply hereinafter) in regards to track maintenance work for track operators.

[0002]

2. Description of the Related Art In recent years, due to speeding up of trains, overcrowding of operation schedules, extension of operation time, etc., the risk of track maintenance work has increased, and its prevention, especially in case of train contact accidents by workers It will lead to a major accident such as the death of an employee and must be absolutely prevented.

Therefore, preventive measures have conventionally been taken. Usually, a supervisor is placed at a place about 1 km on the track from the work site, and a train approach signal is sent from the supervisor to the work responsibility of the work site. I send it to a person (monitoring assistant) to instruct other workers to evacuate.

Various devices have been invented as a means for transmitting the approach of a train from the observer to the supervisory assistant. Among them, a wireless device is used because it is easy to carry and install. Is being done. The problem with this wireless means is whether the "train approach signal" is reliably transmitted from the observer to the surveillance assistant. If it is not transmitted, it will cause a serious accident. In addition, the monitoring assistant may forget to notify the other workers due to some circumstances.

In view of the above circumstances, it is an object of the present invention to ensure that a train approach signal can be transmitted to all workers.

[0006]

In order to solve the above-mentioned problems, according to the present invention, a portable radio for surveillance staff, a wireless repeater installed at a work site, and a portable reception for surveillance assistants. The portable wireless device for a monitor transmits a train approach signal to the wireless repeater and receives a received signal from the wireless repeater and displays it by the operation of the monitor. Having a function, the wireless repeater receives the train approach signal and notifies the operator of the approach of the train by a speaker based on the signal, and sends the received signal back to the surveillance staff portable radio device. Further, it has a function of transmitting a train approach signal to the monitoring assistant portable receiver, and the monitoring assistant portable receiver receives the train approach signal from the wireless repeater and issues a signal to that effect. Adopt a configuration that has functions It was was.

The above-mentioned portable assistant receiver receiver directly receives a train approach signal from the observer portable wireless device, and the transmission function of the wireless repeater to the portable receiver is omitted. In addition, it is preferable that the portable radio for surveillance staff and the portable receiver for surveillance assistant can talk with each other.

The above-mentioned portable radio for surveillance personnel is of a stationary type which automatically detects the approach of a train, and by the detection signal,
The train approach signal may be automatically transmitted to the wireless repeater or the wireless repeater and the portable receiver for the monitoring assistant.

[0009]

In the train approach warning device according to the present invention having the above-described structure, when the observer confirms the train, or
When the automatic detection is performed, the portable wireless device is operated or the "train approach signal" is automatically transmitted. This signal is received by the wireless repeater, and a speaker notifies the worker that the train is approaching.

Further, the wireless repeater transmits the fact that the train approach signal has been received to the portable wireless device, and the reception display by the portable wireless device enables the monitoring staff to reliably transmit the "train approach signal" to the work site. Know what was done.

Further, the wireless repeater or the portable wireless device for the monitoring person transmits a train approach signal to the receiver of the monitoring assistant.
Therefore, the monitoring assistant recognizes the approach of the train more surely, instructs / confirms that the other worker is retracted, and saves himself / herself. Usually, the monitoring assistant (work supervisor) is far from other workers, and in many cases, the transmission by the speaker cannot be surely obtained. Therefore, the transmission by the receiver is very effective. The receiver can be carried by other workers.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a train approach warning device according to the present invention comprises a portable radio P for a supervisor and a wireless repeater Q.
And a portable receiver R for the monitoring assistant.

As shown in FIG. 2, the portable wireless device P has the same shape as a general transceiver, and includes a power switch 1
Press 0 to turn on the power. When the red push button 11 is pressed in this state, the train approach signal a from the antenna 12
Will be sent. Also, if the transceiver button 13 is pressed, general conversation can be transmitted / received via the microphone (speaker) 14. In the figure, 15 is a reset button, and 16 is a reception display lamp for an answer back signal b, which will be described later.
A well-known circuit configuration is adopted for the wireless device P.

As shown in FIG. 3, the wireless repeater Q is of a stationary type, and has a power switch 20, a reset switch 21, a confirmation switch 22, reception display lamps 23a, 23b ... On its front surface. It is provided. When the train approach signal a is input from the portable wireless device P, the reception display lamps 23a, ..., For example, the corresponding lamps 23a are turned on (may be ringed). Therefore, in the case of the embodiment, it corresponds to five portable wireless devices P.

Further, a speaker (reference numeral 24 in FIG. 1) is provided on the rear surface of the wireless repeater Q, and when the train approach signal a is inputted, for example, "a train approaches. One hand is raised horizontally. Please watch the train by doing the following. " Further, the wireless repeater Q transmits the reception signal (answer back signal b) of the train approach signal a together with the voice by pressing the confirmation switch 22.
This signal b may be automatically performed by receiving the train approach signal a. A well-known circuit configuration of the wireless repeater Q is appropriately adopted. In the figure, 25 is a transmitting / receiving antenna.

The portable receiver R for the monitoring assistant includes the portable wireless device P, the red push button 11 and the display lamp 16, and
It has almost the same structure and is further downsized (not shown). Therefore, a clip (not shown) can be securely stored and attached to a pocket of clothes or the like. The portable receiver R issues an alarm "Pee" by the train approach signal a. This alarm is cleared by pressing the reset button.

The frequency of the communication signal of this device is 40
The train approach signal a was an MSK signal, and the answerback signal b was a CTCSS signal. Further, the portable wireless device P and the wireless relay device Q have an ID (selective call) function so that they can communicate with each other without fail.

This embodiment has the above-mentioned structure, and when it is used, as shown in FIG.
And a supervisor A has a portable wireless device P and a work person B has a portable receiver R. Observer A is usually 1 from the work site
Stand by in an orbit about km away. The portable receiver R can also be held by another worker C.

In this state, when the portable wireless device P and the wireless repeater Q input power by pushing the power switches (buttons) 10 and 20, first, the portable wireless device P first sends an MSK signal at a constant time interval. Issue a line connection confirmation signal with ID code. On the other hand, when the wireless repeater Q receives the signal, it transmits a response signal including the CTCSS signal for a certain period of time, and when the portable wireless device P receives the response signal, the line abnormality alarm circuit is reset. If the response signal cannot be received, the portable wireless device P emits a line abnormality alarm sound. In this case, it means that the alarm device does not work normally. Therefore, the output is increased. If a train approach signal a, which will be described later, is transmitted during this confirmation operation, each operation based on the transmission has priority.

After confirming the normality of the circuit connection including the wireless line between the portable wireless device P and the wireless repeater Q, the train approach transmission operation starts.

After the transfer, when the watchman A confirms the train T,
The red push button 11 of the portable wireless device P is pushed to issue the train approach signal a. This signal a is transmitted to the wireless repeater Q and the portable receiver R, and in the wireless repeater Q, the loudspeaker "From the speaker 24, the train approaches, please raise the one hand horizontally and watch the train." Then, each worker C is informed of the approaching of the train, and the portable receiver R issues a "beep" alarm, which is added to the alarm of the speaker 24.

When the worker B confirms the approach of the train by the alarm, he / she goes to the wireless repeater Q and presses the confirmation switch 22. As a result, the wireless repeater Q emits an answerback signal b, the signal b is received by the portable wireless device P, the indicator lamp 16 of the portable wireless device P is turned on, and the watchman A is sure that the train approach signal a is transmitted. To know At this time, the transceiver function enables the supervisor P and the work manager B to appropriately communicate with each other. This communication can prevent and check the malfunction of the portable radio P and the portable receiver R due to the difference between the MSK signal and the tone frequency. Even during this communication,
Input of the train approach signal a has priority.

When the train T passes, the reset button 1
5. Press the reset switch 21 to restore each radio P, radio repeater Q, and portable receiver R to prepare for the next train passage.

In the above-mentioned embodiment, the surveillance staff confirms the train and transmits the "train approach signal a". However, the surveillance staff portable radio P is of a stationary type which automatically detects the approach of the train T. The train approach signal a may be automatically transmitted to the wireless relay Q or the wireless relay Q and the portable receiver R for the monitoring assistant by the detection signal. At this time, the monitor A monitors the automatic detection / transmission and also confirms the answerback signal b. Also at this time, it is preferable to additionally provide the red push button 11.

[0025]

Since the present invention is configured as described above, the monitoring assistant, the normal work manager, and other workers are separately alerted, and an answerback is given to the monitor. It is possible to reliably notify each worker of the approaching train. For this reason, it is possible to minimize the number of accidents in which a worker comes into contact with the train.

[Brief description of drawings]

FIG. 1 is a schematic view of an embodiment.

FIG. 2 is a front view of the portable wireless device of the same embodiment.

FIG. 3 is a front view of the wireless relay device according to the embodiment.

[Explanation of symbols]

 A Observer B Surveillance assistant (worker in charge) C Operator P Portable radio for observer Q Wireless repeater R Portable receiver for surveillance assistant T Train a Train approach signal b Answerback signal 10 Power switch 11 Red push Button 12 Antenna 13 Transceiver Button 15 Reset Button 20 Power Switch 21 Reset Switch 22 Confirmation Switch 23a, 23b Reception Indicator Lamp 24 Speaker 25 Antenna

Claims (4)

[Claims] 1. A portable radio for a surveillance staff, a wireless repeater installed at a work site, and a portable receiver for a surveillance assistant, wherein the portable radio for a surveillance staff is operated by the surveillance staff. ,
While having a function of transmitting a train approach signal to the wireless repeater and receiving a received signal from the wireless repeater and displaying it, the wireless repeater receives the train approach signal and based on it. Has a function of notifying the operator that the train is approaching through a speaker, returning the received signal to the surveillance staff portable wireless device, and transmitting the train approach signal to the surveillance assistant portable receiver. The train approach warning device, wherein the portable assistant receiver for a monitoring assistant has a function of receiving a train approach signal from the wireless repeater and issuing a signal to that effect. 2. The train approach alarm device according to claim 1, wherein the portable assistant receiver for surveillance staff directly receives the train approach signal from the portable radio device for surveillance staff, and the portable telephone of the wireless repeater. Train approach warning device, which is characterized by omitting the function of transmitting to the receiver. 3. The train approach warning device according to claim 1 or 2, wherein the portable radio device for a supervisor and the portable receiver for a surveillance assistant can communicate with each other. 4. The train approach warning device according to any one of claims 1 to 3, characterized in that:
A train that is a stationary type that automatically detects the approach of a train, and a train approach signal is automatically transmitted to the wireless repeater or the wireless repeater and the portable receiver for a surveillance assistant by the detection signal. Proximity warning device.