JP2664339B2 - Train approach warning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a train approach warning device for warning a worker that a train has entered a predetermined warning zone during work on a track such as maintenance and inspection of the track.

[0002]

2. Description of the Related Art When performing work such as maintenance and inspection on a track, the work is interrupted when a train approaches a work point,
It is necessary to evacuate workers and working equipment to a safe place before the train reaches the work point.

[0003] For this reason, when work is currently performed on a railway track, a train watchman and an evacuation instructor are arranged as shown in FIG. 17A to prevent an injury accident. In particular, in line maintenance work and train line work, the train approached a point about 1.2 to 1.6 km away from the work point because it took time from the evacuation signal of the train watchman to interrupt the work and complete the evacuation. Evacuation must be instructed at the time, and multiple train watchmen are assigned. Also, depending on the topographical conditions such as curves, the arrangement of relay watchmen is required, and the number of watchmen is increasing.

[0004]

As described above, up to now, it is necessary to attach a plurality of watchmen to the arrangement before starting work on the track, which increases the time required for work setup, There was a problem of increase. Particularly, when both the upper and lower lines had to be monitored, personnel had to be assigned to the upper and lower lines.

As shown in FIG. 17B, a proximity switch is installed at a predetermined position on the track, a control cable is extended from the proximity switch, and a warning device arranged near a work point warns of approach of the train. In some cases, installation of such a proximity switch and installation of a control cable require time, so that the setup time was not reduced. In addition, there is a difference in how to set an alarm zone between when the work content extends to power line construction and when only facility maintenance is performed. Therefore, in the conventional alarm system using the proximity switch, it is troublesome to change the installation position of the device according to the contents of the construction. in addition,
There is a risk of failure of the proximity switch and the like, and after all, it is the actual situation that guards are conventionally arranged for safety. That is, such a conventional alarm system only functions as an aid for a watchman, and is essentially an alarm system with a plurality of watchmen.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to reduce the number of steps for setting up such guards and the like, and to ensure safe work within the track with a small number of personnel.

[0007]

Means for Solving the Problems, operation and effect] claim 1
The described train approach warning device is a train approach warning device that alerts a worker that a train has entered a predetermined warning zone during work inside the track such as maintenance and inspection of the track,
A track circuit information detecting means for detecting the train-rail information for each track circuit, to understand the approach conditions of the train to the working point on the basis of the train-rail information detected by said track circuit information detecting means, said alarm zone said column wheel Alarm is required if it exists within
Needed, an alarm necessity determination means for determining an alarm required to be present, and alarm output means for outputting an alarm at working point when the alarm is determined to be necessary by said alarm necessity determining means
Wherein the alarm necessity determining means detects the track circuit information.
A transmission line for transmitting the detection result of the means along the line,
The alarm output means can be connected to the transmission line.
Functioning terminal sections, provided in each terminal section,
The alarm zone setting section for setting the alarm zone
Control provided in the terminal unit to determine whether the alarm is necessary
And a unit.

According to this train approach warning device, a warning is issued by grasping the approach status of the train to the work point based on the train location information of the track circuit. Since the track circuit is already provided along the track, there is no need to newly provide a detection device. Track circuits have a long history and track record in signal security, and are extremely reliable.

Therefore, according to the train approach warning device of the present invention, the approach of the train can be detected with high reliability using the existing track circuit. This eliminates the need to do so, and saves personnel. Further, since the track circuit is already existing, there is no need to install a device for detecting the approach of the train each time, which is highly effective in reducing the number of setup steps.

In addition, since it is fair to judge whether or not an alarm is necessary based on the train line information of a highly reliable track circuit, it is not necessary to arrange a relay member even at a curve point with poor visibility .

Further, according to the train approach warning device of the present invention , when the warning output means is connected to an appropriate terminal unit and a warning zone is set by the warning zone setting unit, the control unit controls the track circuit taken in from the transmission line. It is determined whether or not a warning is necessary based on the train location information. Therefore, when installing the alarm device of the present invention, it is only necessary to connect the alarm output means to the terminal near the work point to set the alarm zone, and very simple setup is required. Therefore, the number of preparation steps before starting work can be reduced.

Further, the train proximity warning apparatus according to claim 2, wherein in the train proximity warning apparatus according to claim 1, wherein the warning zone setting unit capable of setting the warning zone respectively up line and down line It is characterized by being performed.

With this configuration, even when it is necessary to monitor both the up line and the down line, the train on-line information of the track circuit at a predetermined distance ahead on the up line and the train line information at a predetermined distance ahead on the down line can be obtained. Both can be monitored using the train location information of the track circuit, and the evacuation instructor at the work point can also serve as an up-and-down line by itself, which also has the effect of saving personnel. The reason that the upper and lower lines can be simultaneously monitored in this way is that the position of the train is detected using the track circuit.

According to a third aspect of the present invention, in the train approach warning device according to the first or second aspect , the warning zone setting unit includes two or more warning zones having different distances from a work point. Is selectable.

According to this device, it is possible to easily set, for example, any of the near and far warning zones via the warning zone setting unit. This is also because it utilizes a track circuit configured to cover the entire line along the track. The train approach warning device according to claim 4 is the train approach warning device according to any one of claims 1 to 3 , further comprising: An end point detecting means for detecting is provided, and even when it is determined that a warning is necessary based on the train location information by the track circuit, the end point detecting means detects that the train has left a predetermined distance after passing. An alarm means for stopping an alarm when the alarm is issued is also provided.

According to this train approach warning device, even if the train is present in the track circuit including the work point, when the end point detecting means detects that the train has passed and is separated by a predetermined distance, Stop the alarm immediately. In the present invention, since the configuration for detecting the train using the track circuit is employed, when the work point is located at the end on the start side of the track circuit, for example, an alarm is always required only by the alarm necessity determination means. It will be judged. However, according to the device of the fourth aspect , the warning can be stopped when the train passes the work point and is separated by a predetermined distance, so that the work can be quickly resumed. That is, by adding the end point detecting means and the alarm stopping means, the restart of the work is not delayed, and the value of the train approach warning system using the track circuit can be further enhanced.

According to a fifth aspect of the present invention, there is provided the train approach warning device according to any one of the first to fourth aspects, wherein all or a part of the transmission line is a free line of an existing wayside telephone. Is used.

Line-side telephones are provided at predetermined intervals along a line, and the telephone lines are connected at least from station to station. In addition, the telephone line can be used for information transmission. Therefore, if there is a vacant line in the existing telephone line, it is advantageous in that the use of the vacant line can reduce the man-hour for laying the transmission line for the alarm device.

[0019]

Next, an embodiment will be described. The system of the example, as shown in FIG.
It comprises a terminal 10 that is permanently installed at intervals of m and an alarm output device 20 that is installed in the immediate vicinity of the evacuation instructor. Also,
The train detection method in this system uses a reliable track circuit with a long history and track record in signal security.

More specifically, the train location information of the track circuit is detected, the train location information is read from the signal equipment box 3 providing the blockage control information for the traffic signal 2 to the terminal 10, and furthermore, each terminal location information is read. Are connected by the transmission line 5 so that train location information from each track circuit can be taken in. It should be noted that a communication cable is used as the transmission line 5, and if there is a vacant line in the existing wayside telephone, the vacant line is used. As a result, the cost of laying a new transmission line is reduced.

The terminal 10 is permanently installed in a newly installed storage box below a TB box that has been installed in advance at intervals of about 500 m to enable telephone communication from a railway line. Each terminal 10 (1), 10 (2),..., For example, as shown in FIG.
, DT1, DT2,..., And DT1, DT2,. As described later, in the embodiment, eight track circuits are one block.

FIG. 3 shows the hardware configuration of the terminal 10.
Shown in The terminal 10 includes a power supply unit 11, a logic unit 12,
An input unit 13, an output unit 14, a line transmission unit 15, a condition setting unit 16, and a use setting unit 17 are provided. The power supply unit 11 contains elements for protecting internal devices such as a noise filter and a surge absorber.
The power supply (5 V) to be supplied to the electronic circuit, the power supply (12 V) for capturing input conditions, and the power supply (24 V) for driving the system normal relay are configured.

The logic unit 12, which is the center of the apparatus, has two C
The PU is operated simultaneously to obtain a fail-safe configuration based on a bus synchronous system. The operating speed is about 5 MHz, and there are a ROM in which programs and data are written and a storage element such as a RAM used as a work area of the program, and a system clock as a reference and two CPs.
A circuit for providing a common reset signal to U is also provided. Also, there is an interval timer based on the program operation,
Interrupt control can be applied to two CPUs at the same time. Further, a monitor transmission unit 18 for input / output of a monitor device is provided. The monitor transmission section 18 is RS23
It consists of 2C terminals.

The operations of the two CPUs of the logic unit 12 are compared and monitored by a bus-synchronized high-speed fail-safe comparator. Also, a watchdog timer is provided to monitor the operation of the software, and if a runaway occurs, the runaway terminal is disconnected and the line is bypassed between adjacent terminals. A specific method of bypass will be described later. In addition, the alarm output device 2
When 0 is connected, a train approach warning is output from both the up and down lines.

As the input unit 13 and the output unit 14, photocouplers are used for electrical insulation. The input is checked by interrupting the power supply (check signal) so that the failure of the photocoupler can be found, and the output is checked by feedback (output diagnosis) of the output signal. In the case of a failure, if the centralized monitoring device 31, the output device 20, and the monitoring device 32 are connected to the output unit 14, the device is also configured to notify them of the failure. Further, the information on the failure is sent to the terminal adjacent to the downstream via the line transmission unit 15. In the terminal on the downstream side, it is determined that the terminal on the upstream side has failed by checking the transmitted ID number.

The line transmission unit 15 performs input and output by a modem that modulates and demodulates through a surge absorber, a transformer, and the like, and a serial communication controller (SCC). Also,
The system normal relay is configured to fall when an abnormality is detected by the watchdog timer circuit. By the fall of the system normal relay, the above-mentioned bypass is performed.

The condition setting section 16 is for setting conditions according to the use environment by using setting keys when the terminal 10 is installed. The condition settings include terminal ID number, track circuit information import condition (only for up line, down line, both up and down line, etc.), setting of alarm start point for facility work and setting of alarm start point for power work I do. The reason for setting the alarm start point for each terminal 10 is that there are various positional relationships between each terminal and the track circuit. That is, the alarm start point can be set only for each track circuit. If the terminal is at the end of the track circuit, it may be a two track circuit, but if the terminal is in the middle of the track circuit, it may be three track circuits. This is because there is something that must be taken. In addition, since the length of each track circuit is also different, there may be a case where two sections are required for a long track circuit section, and three track circuits must be used as an alarm zone because the section is a short track circuit section. .

The use setting section 17 is for setting use conditions when the present system is actually used. In the present embodiment, the use condition is set by selecting one of “OFF”, “power construction”, and “facility construction” for each of the upper and lower lines by operating a switch. Here, in the case of electric power construction, the alarm start point is located farther than in the case of facility construction.

FIG. 4 shows the appearance of the terminal 10. As shown, the switch 4 as the use setting unit 17
1, 42 are provided. The characters “UP” and “DOWN” indicating the distinction between the up and down lines are displayed on the switches 41 and 42, and the character “OFF” is displayed immediately below “OFF”.
The letter of “facility” is displayed on the left of “F”, and the letter of “power” is displayed on the right of “OFF”. In setting the use conditions, the switches 41 and 42 are operated to set “OFF”, “power work”,
Select one of "Facility construction" and set the use condition.

The terminal 10 includes a power supply unit 11, an input unit 13, an output unit 14, and a monitor transmission unit 18 described above.
Are provided, and various display LEDs are provided. This display LED is
Besides turning on when any of the above-mentioned switches 41 and 42, “facility” and “power” are selected, “power”,
"Operation", "monitor SD", "monitor RD", "failure", "spare", "downfall abnormal", "down approach", "down RD", "down SD", "up abnormality", "up approach""
Some are provided with the display of each character of “uplink SD” and “uplink RD”.

"Power" is an LED that lights up when the power is turned on.
It is. “Operation” is an LED that lights up when an alarm operation is performed. "Monitor SD" is for data output to the monitor, "Monitor RD" is for data input from the monitor,
Each LED is lit. “Failure” is an LED that lights up when a failure described later occurs. “Spare” is literally a spare LED and is not normally used. "Downward abnormality" is an LED that is lit to indicate that a train approach warning is being performed as a safety side due to the presence of a system abnormality described below for the downline. This LED is lit when an alarm is issued due to approaching. “Downlink RD” is an LED that lights up when data is being input from the upstream terminal with respect to the downlink, and “Downlink SD” is when the data is output to the terminal downstream from the terminal with respect to the downlink. The LED is turned on. “Uplink abnormality”, “uplink approach”, “uplink SD”, and “uplink RD” respectively indicate “downlink abnormality”, “downlink approach”, and “downlink S” for the uplink.
D "and" Down RD ".

On the other hand, the software executed by the logic unit 12 of this embodiment is described in assembler. And
The track circuit information is used as fixed information at the time of three scan coincidences of 50 ms by the inspection pulse method. The received data is subjected to CRC check and internal data check, and only data that has passed is adopted. Track circuit drop information (alarm start) is 2
The condition is that the same data is received three times, and the condition of the operation information (alarm stop) is that the same data is received three times. Also, when a CRC error or the like occurs five times in a row or when there is no transmission / reception for 5 seconds, it is regarded as dangerous and an alarm is started.
This is the case of turning on the LED of “down abnormality” or “up abnormality”.

The alarm output device 20 is connected to a terminal near the work point via the connector 43 shown in FIG. The hardware configuration of the alarm output device 20 is as shown in FIG. 5, and the control relay unit 21, the alarm unit 22, the power supply unit 2
3. An auxiliary function unit 24 and an end point input unit 25 are provided.

The control relay unit 21 is configured to drive the alarm unit 22 when an alarm output instruction is input from the terminal 10 to generate an alarm sound and light by a blinking lamp. The power supply unit 23 is configured to input an AC power supply via the terminal 10 as a drive power supply for the alarm output device 20.

The control relay section 21 performs an alarm control on the alarm section 22 in accordance with a control signal from the terminal 10 and a control signal from the end point input section 25. Power supply unit 23
The power supply (24V) to be supplied to the alarm unit 22 and the power supply (8V) to be supplied to the auxiliary function unit 24 are generated by an AC / DC converter using elements for protecting internal devices such as a noise filter and a surge absorber.

The alarm section 22 includes an alarm sound generator and a flashing light. The alarm sound generator includes a fundamental frequency oscillation circuit, a modulation circuit, and a power amplification circuit. In addition, the blinking light is of a double system to cope with a broken ball or the like. The system is also configured to provide an alarm in the event of failure of the connected terminal 10 and disconnection of the cable between the terminal and the terminal together with normal alarm control.

The end point input unit 25 receives a pulse from the end point sensor and transmits it to the control relay unit 21. 4-axis detection (4 pulse generations) to prevent false detection of trains
Thus, the signal is transmitted to the control relay section 21 for the first time. The end point connected to the end point input unit 25 is, for example, a predetermined distance from the work point in the downward direction if the line is a down line and a predetermined distance in the upward direction if the line is an up line, as shown in FIG. Switches 51 and 52 are provided, and the proximity switches 51 and 52 detect train passing. When the end point is detected by providing the proximity switches 51 and 52, the alarm unit 22 cancels the alarm. This adopts a configuration that detects trains in units of track circuits, so that when the work point is at the beginning or middle of the track circuit, it is possible to avoid that the alarm is not released forever and resume work. In order to be able to hasten.

The auxiliary function unit 24 is provided with a buzzer for giving an alarm when a failure occurs and a battery of a charging system therefor. When there is a disconnection of the power supply line to / from the terminal 10, disconnection of the connector, or failure of the power supply, the auxiliary function unit 24 provides a strong buzzer sound.

The auxiliary function unit 24 is, specifically, shown in FIG.
As shown in the figure, the buzzer 24a, the auxiliary power supply 24b, and the contact 24c. The contact 24c is provided such that a coil 61 is provided on a power supply line 60 input from the terminal 10, and is turned off when the coil 61 is excited and turned on when the coil 61 is not excited. Have been.

As shown in FIG. 8, the power supply line 60 is combined with a relay line 65 connecting the terminal 10 and the control relay section 21 to form one connection cable 6.
8 and is connected to the terminal 10. With such a configuration, the auxiliary function unit 24 emits an alarm sound in the following cases.

When the connection cable 68 is disconnected. When an open / short occurs in the power supply line 60, and when the approach of the train is not transmitted to the alarm unit 22 because the connection cable 68 is disconnected, an auxiliary function is provided. Part 24
The buzzer sounds to warn the safe side. As a result, a buzzer sound is generated even when the monitoring is disabled, and also functions on the safe side.

The alarm output device 20 uses drip-proof parts especially for use outdoors, and its appearance is configured as shown in FIG. As shown in the figure, as the end point input unit 25, a connection terminal 25 with the downstream end point is provided.
a and a connection terminal 25b for connection with the upstream end point. The connection terminal with the terminal 10 is configured to appear when the lid 71 is opened. Flashing light 2 of alarm part 22
2a is fixed to the ceiling of the alarm output device 20, and the speaker 22b is fixed to the front. In addition, a terminal 73 for connecting the alarm sound generator of the alarm unit 22 and the portable speaker 72 is provided. The portable speaker 72 can also be connected because considerable noise may be generated depending on the type of work, so that it should be placed near the location of the evacuation instructor so as not to overlook the alarm sound. To do that. Further, the buzzer 24a of the auxiliary function unit 24 is provided alongside the speaker 22b.

On the front of the alarm output device 20, "power supply", "operation", "terminal failure", "approaching down",
An LED is arranged with each character of “approaching up”.
The lamps are illuminated when power is turned on, when an alarm is activated, when a terminal malfunctions, when approaching down, and when approaching up, respectively.

Next, the processing content of the train approach warning processing in this embodiment will be described. First, setting of use conditions will be described using a downlink as an example. In the device of the present embodiment,
With the switch 41, an alarm zone for facility works and an alarm zone for power works can be selected and set. This state is shown in FIG.

FIG. 10A shows a state in which the electric power construction is selected, and an alarm is issued when the train on-line information is detected by the track circuits DT1 to DT3 overlapping the alarm zone Z1 covering far from the work point. The loudspeakers 22b and 72 of the output device 20 sound and the blinking light 22a blinks. On the other hand, if the facility construction is selected, Z2 in FIG.
Orbit circuits DT2 to DT3 in a range close to the work point
Since the alarm zone is set only for, no alarm is issued in the illustrated state.

Each of the trains is connected to an end point sensor 51.
After passing through, the alarm and the blinking of the blinking light are stopped. This is because the alarm zones Z1 and Z2 are set for each track circuit, and if the train does not pass a considerable distance from the work point, the warning will not be extinguished. is there. Therefore, the end point sensor 5 is used so that the alarm is released as soon as possible after passing the work point.
1 was provided so that the alarm could be forcibly released.

Next, a train approach warning will be described. As an example, a case where the alarm output device 20 is connected to the terminal 10 (5) as shown in FIG. 2 will be described. At this time, as a use condition, the track circuit DT
2 to DT4, and track circuits UT2 to UT for up lines
It is assumed that 4 is set as an alarm zone. The following table shows the relationship between the state of the train on each track circuit and the warning at this time.

[0048]

[Table 1]

As described above, in this example, when a train is present in the track circuits DT2 to DT4 and UT2 to UT4 set as the alarm zone, the alarm is turned on, and the alarm output device 20 at the work point outputs the alarm. The evacuation instruction is issued by the sound and the blinking light. The evacuation instructor knows the approach of the train from the alarm sound and the flashing light, and instructs the worker to evacuate. At this time, the alarm output device 2
Based on the lighting status of the display LED of 0, it can be detected whether an approach warning has been issued for a down line or an alert has been issued for an up line. Therefore, the evacuation instructor can easily know whether it is sufficient to retreat to the up line or to retreat to the down line. Also, after the evacuation is completed,
It is also easy to determine whether the completion of the evacuation should be notified to the up line or the evacuation completion to the down line.

Next, the relationship between the terminals will be described. As an example, as shown in FIG. 11, 12 terminals T1 to T12 will be described. Here, for the sake of simplicity, it is assumed that each terminal corresponds to just one track circuit DT1 to DT12. That is, each terminal T1 to T12 is connected to its corresponding track circuit DT.
This means that the train line information of 1 to DT12 has been input.

At this time, the transmission line 5 is configured to transmit the train location information while passing data in the down direction. That is, the terminal T1 transmits the information obtained by itself to the terminal T2 downstream thereof, the terminal T2 transmits the information obtained by itself to the terminal T3 downstream thereof, and the data is sequentially transferred in the downstream direction. It is configured to be transmitted.

Here, the data transmitted between the terminals has a data structure as shown in FIG. That is, the data has a 72-bit (9-byte) configuration.
"Address area", "Control data area", "Track circuit data area", "Track circuit (reverse) data area", "Fault information area", "Frame check area", "Frame check area", "End flag area" Are provided respectively.

In the "control data area", the ID number of the terminal sending the information is written. In the "track circuit data area", train location data on eight track circuits on the upstream side as viewed from the terminal that has received this data is recorded. For example, if there is no train on any line, "00000000"
If the train is on the track circuit one upstream, "0000"
0001 "and data such as" 00000011 "if a train is present on the track circuits one upstream and two upstream. The next “track circuit (reversal) data area”
The data in the "track circuit data area" is inverted, and is used to check the correctness of the track circuit data.

The relationship between the terminal and the track circuit data is shown in FIG. 11, as shown in FIG.
When the train location information obtained at terminals T1 to T8 is input and passed to terminal T10,
It is changed to data in which the leading bit is deleted and the last bit is added to the train location information of the terminal at T9, and transmitted.

In the "failure information area", information for discriminating a terminal having a failure among terminals upstream of the terminal receiving the data is recorded. Specifically, the ID number of the failed terminal is recorded. Whether each terminal is broken or not
Each terminal makes its own decision using its own fail-safe comparator, CRC check, watchdog timer, and other functions. As described above, the terminal in which a failure is found by these functions is bypassed due to the fall of the normal relay. Therefore, as shown in FIG. 13A, for example, when the terminal T4 is falling, the control data of the data input to the terminal T5 is transmitted to the terminal T4.
No. 3 (ID3) remains. Therefore, the terminal T5 does not receive the expected data from the terminal T4, so the ID number (ID4) of the terminal T4 is entered as the failure information. As a result, the terminal T5 and the terminals T6, T7,.
Is performed assuming that the terminal T4 has failed.

Each terminal also determines whether the input / output photocoupler has failed by checking the check signal and the feedback signal. In the case of these failures, the terminal CPU itself is alive,
As shown in FIG. 13B, the terminal T4 itself writes its own ID number (ID4) in the failure information and sends it downstream. As a result, at terminal T5 and below, terminal T
4 is determined to be faulty, and processing for ignoring track circuit information from the terminal T4 is performed. This makes it possible to treat the terminal T4 as if it were apparently bypassed.

With either of these cases,
Subsequent processing will be described with an example in which it is determined that the terminal T4 has failed. The work point is the position of the terminal T6, and the alarm output device 20 is connected to the terminal T6. As a use condition of the terminal T6, it is assumed that the track circuits DT4 to DT6 up to three upstream are set as warning zones for the down line during normal times as shown in FIG.

On the other hand, when the terminal T4 fails as described above, the train location information of the track circuit DT4 cannot be obtained. For this reason, in the terminal T6, the connection processing is executed for the track circuits DT3 to DT5 as a condition for the alarm processing. Specifically, as the track circuit data of the track circuit DT4, as shown in the flowchart of FIG. 15, "1" indicating the train location is set in the track circuit DT3 and "1" is set simultaneously (S1, S2). And the track circuit DT
This orbital circuit DT until 5 changes from “1” to “0”
4 is held at "1" (S3 to S5).
As a result, as shown in FIGS. 16A to 16D, the track circuit data of DT4 is controlled by DT3 and becomes “1”.
It falls to "0" under the control of DT5. Therefore, DT4 is connected to DT3 and also to DT5, so that it looks as if it was ignored. And DT
Since "1" also stands at DT4 when "1" stands at 3, the result is the same as when the alarm start point is extended from DT4 to DT3. That is, as shown in FIG. 14B, the warning zone is apparently expanded to DT3 to DT6.

As described above, the present embodiment employs a configuration in which a terminal failure is determined and information on the failed terminal is ignored, so that in the event of a terminal failure, an alarm zone is extended to the safety side, and the safety of workers is reduced. Security is complete. As described above, the embodiments of the present invention have been described. However, the present invention is not limited to the above-described embodiments, and can be modified into various modes without departing from the gist of the present invention.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram illustrating a configuration of a train approach warning device according to an embodiment.

FIG. 2 is an explanatory diagram illustrating a configuration of a train approach warning device according to the embodiment.

FIG. 3 is a block diagram illustrating a configuration of a terminal according to the embodiment.

FIG. 4 is a perspective view showing an appearance of a terminal in the embodiment.

FIG. 5 is a block diagram illustrating a configuration of an alarm output device according to the embodiment.

FIG. 6 is an explanatory diagram of how to set an end point in the embodiment.

FIG. 7 is a circuit diagram illustrating a configuration of an auxiliary function unit according to the embodiment.

FIG. 8 is a block diagram showing a connection state between a terminal and an alarm output device in the embodiment.

FIG. 9 is a perspective view showing the appearance of the alarm output device in the embodiment.

FIG. 10 is an explanatory diagram of a selected state of an alarm start point in the embodiment.

FIG. 11 is an explanatory diagram showing a data flow between terminals in the embodiment.

FIG. 12 is an explanatory diagram showing a structure of data transmitted between terminals in the embodiment.

FIG. 13 is an explanatory diagram illustrating processing contents when a terminal fails in the embodiment.

FIG. 14 is an explanatory diagram showing processing contents when a terminal fails in the embodiment.

FIG. 15 is a flowchart showing processing contents when a terminal fails in the embodiment.

FIG. 16 is an explanatory diagram showing processing contents at the time of a terminal failure in the embodiment.

FIG. 17 is an explanatory diagram showing a conventional approach to a train approach warning.

[Explanation of symbols]

1 ... track, 2 ... traffic light, 3 ... signal equipment box,
5 transmission line, 10, 10 (1) to 10 (7), T
1 to T12 terminal, 11 power supply unit, 12
... Logic unit, 13 ... Input unit, 14 ... Output unit,
15: line transmission unit, 16: condition setting unit, 17
..Use setting section, 18 ... Monitor transmission section, 20 ...
Alarm output device, 21: control relay unit, 22: alarm unit, 22a: flashing light, 22b: speaker, 2
3 Power supply unit, 24 Auxiliary function unit, 24a
Buzzer, 24b: auxiliary power supply, 24c: contact, 2
5 ... End point input unit, 25a, 25b ... Connection terminal, 31 ... Centralized monitoring device, 32 ... Monitor device,
41, 42 ... switch, 43 ... connector, 5
1, 52 ... proximity switch (end point sensor), 60
..Power supply line, 61 ... coil, 65 ... relay line, 68 ... connection cable, 71 ... lid, 72
... Speaker, 73 ... Terminal, DT1-DT1
2, UT1 to UT6 ... track circuit, Z1, Z2 ...
Alarm zone.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Seiji Imai 1-4-1 Meieki Station, Nakamura-ku, Nagoya City, Aichi Prefecture Inside Tokai Passenger Railway Co., Ltd. (72) Inventor Fumio Shimizu Meieki, Nakamura-ku, Nagoya City, Aichi Prefecture 1-4-1 Tokai Passenger Railway Co., Ltd. (72) Inventor Tadahiro Tanabe 1-1-4 Meieki Station, Nakamura-ku, Nagoya City, Aichi Prefecture Tokai Passenger Railway Co., Ltd. (72) Inventor Tsutomu Ito Nakamura, Nagoya City, Aichi Prefecture 1-4-1, Kuname Station, Tokai Passenger Railway Co., Ltd. (72) Inventor Nori Matsuda 1-4-1, Meiji Station, Nakamura-ku, Nagoya City, Aichi Prefecture Tokai Passenger Railway Co., Ltd. (72) Inventor Ryokatsu Mochizuki Aichi 1-4-1 Meiji Station, Nakamura-ku, Nagoya-shi, Tokai Passenger Railway Co., Ltd. (72) Inventor Saburo Onoda 1-4-1, Meieki, Nakamura-ku, Nagoya-shi, Aichi Inside Tokai Railway Company (72) Inventor Hidefumi Matsumiya 1-1-4 Meieki Station, Nakamura-ku, Nagoya City, Aichi Prefecture Inside Tokai Railway Company (72) Inventor Hiroyuki Kuwahara 6-33-3 Sagamigaoka, Zama City, Kanagawa Prefecture Hikall Sagamigaoka 2F Toho Denki Kogyo Co., Ltd. (72) Inventor Shinichi Saito 6-33-3 Sagamigaoka, Zama City, Kanagawa Prefecture Hikall Sagamigaoka 2F Toho Denki Kogyo Co., Ltd. (56) References JP-A-2-179578 (JP) JP-A-4-39161 (JP, A) JP-A-4-100777 (JP, A) JP-A-4-126664 (JP, A) JP-A-4-163273 (JP, A) 5-16805 (JP, A) JP-A-5-97033 (JP, A) JP-B-51-35723 (JP, B1)

Claims (5)

(57) [Claims] 1. A train approach warning device for warning a worker that a train has entered a predetermined warning zone during work on a track such as maintenance / inspection of the track, the train having a track circuit. Track circuit information detecting means for detecting on-track information; and grasping the approach status of the train to the work point based on the train on-rail information detected by the track circuit information detecting means,
If the train is within the warning zone, a warning is required,
An alarm necessity determining means for determining an alarm required unless, and an alarm output means for outputting an alarm at working point when the alarm is determined to be necessary by said alarm necessity determining means, said alarm necessity The determining means transmits the detection result of the track circuit information detecting means along the track.
A transmission line to be transmitted and connected to the alarm output means, which are arranged at various places in the transmission line.
Possible terminal sections and provided in each terminal section to set the alarm zone
The alarm zone setting unit is also provided in each terminal unit to determine whether the alarm is required.
And a control unit that performs the following . 2. The train approach warning device according to claim 1, wherein the warning zone setting section is provided for an up line and a down line.
It is configured to be able to set each alarm zone
Train approach warning device. 3. A train approach warning according to claim 1 or 2.
In the alarm device, the alarm zone setting unit has a different distance from a work point.
Two or more warning zones can be selected
Train approach warning device. 4. A column according to claim 1, wherein :
In the vehicle approach warning device, we passed the work point
Detect that a train has moved a certain distance from a work point
Provided also Tsuido point detecting means, the train-rail information by track circuits is determined alarm should the
Even when the train is moving,
Stops the alarm when it is detected that a certain distance has passed after passing
Train approach warning device characterized by providing
Place. 5. The column according to claim 1, wherein :
In the vehicle approach warning device, the whole or a part of the transmission line may be used as an empty
A train approach warning device characterized by using an incoming line.