JP3570965B2 - Signal beginning warning device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a signal start warning device for stopping a train that has started inside a traffic signal despite a stop signal in order to ensure the safety of running the train in a railway signal system.
[0002]
[Prior art]
In order to realize the safe running of the train in the railway signal system, the track on which the train travels is divided into fixed lengths, a traffic signal is provided at the entry end, and the train travels on the section to the next traffic light at the traffic light Means are employed for displaying information as to whether or not it is possible (this information is referred to as present), and for the train driver to visually confirm the present and operate.
[0003]
The method of installing this traffic light varies depending on the maximum speed and operating frequency of the train, but the types of traffic light include a block traffic light installed in the middle of the station, a traffic light installed in the entrance to the station yard, and a signal from the station yard to the station A departure signal provided at a location where the vehicle enters is generally used. In addition, the present signal shows a signal instructing progress when the train can safely travel on the inner section of the traffic light, and stops when it is impossible to travel because other trains are already occupied. An indicating signal is presented.
[0004]
In spite of the stop signal, the train driver mistakenly noticed the stop signal, and many driving accidents such as a train collision and derailment starting at the signal inside section occurred before. In order to prevent such driving accidents, an ATS (Automatic Train Stopping System) is provided as a means for immediately stopping the train that has begun in spite of the signal stop signal, and as a result, this type of driving accident has been drastically reduced. did.
[0005]
FIG. 2 shows a basic block configuration diagram of a conventional ATS. ATS is broadly divided into ground equipment and on-board equipment. The ground equipment includes an input unit 31 for inputting the present condition of the traffic light from an interlocking device or a blocking device, and an ATS ground wire 33 attached between rails at a predetermined position in front of the traffic light 32. The on-board equipment includes an ATS on-board 35 mounted below the floor of the leading vehicle of the train 34 and facing the ATS on-board 33, an on-board logic unit 36 fixedly mounted near the train cab, and a train. And a speed generator 37 attached to the axle to detect the speed of the vehicle.
[0006]
In the operation of the ATS, the input unit 31 inputs the present condition of stopping or advancing the traffic light 32 and transmits the condition to the ATS 33 via the cable 38. The ATS grounding element 33 selects an oscillation frequency according to the present condition. When the train 34 passes over the ATS ground child 33, the ATS vehicle child 35 detects the frequency, and the onboard logic part 36 inputs the condition. The on-board logic unit 36 does not perform any control at the time of the progress indication, but issues an alarm at the time of the stop indication to urge the train driver to apply the brake. The on-board logic unit 36 monitors the speed of the speed generator, and controls the brake when the speed of the train 34 has not been reduced to a predetermined speed or less after the next passing of the ATS 33 or after a certain period of time, Stop the train automatically. With this series of operations, the train that starts overlooking the stop indication is automatically stopped outside the traffic light 32.
[0007]
This conventional ATS has various systems corresponding to the train speed and the operation frequency, and in a general railway line section, it is obliged to install any one of them according to the Railway Business Law (ordinary railway structure rules). However, despite the equipment for emergency response, the price is quite expensive.
[0008]
However, in the case of small and medium-sized private railways where train speeds are low and driving frequency is low, ATS is not required to be installed as a special case. For expensive reasons, conventional expensive ATSs cannot be installed. For this reason, there is no means to stop the train that has begun by mistake after seeing the stop sign of the traffic light, and serious driving accidents such as train collisions occur 5 to 6 times a year.
[0009]
[Problems to be solved by the invention]
Therefore, the present invention solves the above-mentioned conventional problems, and mistakes a signal stop indication that has occurred at a small and medium-sized private railway that cannot be equipped with a conventional expensive ATS for economic reasons. It is an object of the present invention to provide a signal start warning device that can immediately stop a train that has started inside a traffic light despite a stop sign in order to prevent a driving accident caused by the above.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the present invention includes an alarm transmitter mounted on a traffic signal on the ground and an on-vehicle device installed on a train cab. The alarm transmitter detects the signal of the traffic signal with a sensor, inputs the detection condition to the transmission processing unit, determines whether or not a warning is necessary, and when a stop signal is displayed, the radio transmits a warning to a specific section inside the signal. Is always transmitted. The in-vehicle unit received the alarm condition from the radio of the alarm transmitter with the radio, input the reception frequency and the operation direction changeover switch state to the reception processing unit, and mistakenly saw the stop indication and started inward into the traffic signal An alarm buzzer is sounded for the train driver, and a brake operation for stopping the train is immediately prompted.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a schematic configuration diagram of a signal beginning warning device. In this schematic configuration diagram, an example in which an alarm transmitter is attached to a departure signal will be described. FIG. 2 is a schematic block diagram of the alarm transmitter, and FIG. 3 is a schematic block diagram of the in-vehicle device.
[0012]
As shown in FIG. 1, the signal onset warning device includes a warning transmitter 1 attached to a departure signal 2 on the ground and a portable on-board device 3 installed on a cab of a train 4 by a train driver during train operation. It is configured. As shown in FIG. 2, the alarm transmitter 1 senses a current flowing through the lamp circuit of the traffic signal 2 to detect the present condition of the traffic signal, and inputs the sensor condition to determine whether a warning is necessary. A transmission processing unit 8 for realizing various processes such as outputting a transmission condition to the radio device 9 and a function of transmitting an alarm condition only to a specific section inside the traffic signal at a frequency corresponding to the driving direction of the traffic signal 2. And a specific low-power wireless device 9 having the same. The present signal of the traffic signal 2 is detected by the sensor 6 inserted in the lamp circuit of the traffic signal, and the detection condition is input to the transmission processing unit 8 to determine whether or not an alarm is necessary. Judgment is made, and the alarm condition is always transmitted to a specific section inside the traffic signal by the wireless device 9 at the time of the stop indication. In FIG. 1, reference numeral 5 denotes an alarm propagation range.
[0013]
As shown in FIG. 2, the display of the two-way or three-way traffic light (colored light type) 2, which is generally introduced in small and medium-sized private railways, is controlled by lighting red, orange, and green light bulbs. However, the sensor 6 is inserted into a portion of the traffic light 2 where the control circuit of the light bulb becomes individual, and the current flowing through the line is sensed by the current sensor section 7 to detect the presence of the traffic light 2. The detected present condition is input to the transmission processing unit 8. The transmission processing unit 8 instructs the wireless device 9 to transmit an alarm when the stop is indicated. No warning transmission is instructed when proceeding or displaying a warning. When the indication changes from progress or attention to stop, the change is held for a certain period of time, and the alarm output is suppressed according to the holding condition. When the train 4 enters the inside of the traffic light 2 in the progress or caution indication, it changes to the stop indication by the return operation of the interlocking device or the signal control of the track circuit, but an alarm is output to the train 4. Since there is no need, no warning transmission is instructed in spite of the stop indication. The holding condition is maintained for a certain period of time until the train 4 passes through the warning propagation range 5 of the radio wave of the wireless device 9, and is automatically released after the lapse of the certain period. The wireless device 9 transmits when the transmission processing unit 8 gives a transmission instruction. The wireless device 9 is covered with a cover having a hole of a predetermined shape in a part of the housing. As a result, the propagation distance of the radio wave can be shortened, and at the same time, the warning propagation range 5 can be narrowed to have directivity in a predetermined direction. As a result, it is possible to prevent an unnecessary alarm condition from being transmitted to a train located outside the traffic light 2. Further, the transmission frequency is changed according to the driving direction indicated by the traffic light 2. Thus, even if the train 21 having a different driving direction travels in the inner section of the traffic light 2 and receives an alarm condition, it is possible to prevent the generation of an unnecessary alarm by checking the frequency.
[0014]
As shown in FIG. 3, the on-vehicle device 3 receives a specific low-power radio device 11 for receiving an alarm condition of the alarm transmitter 1, a process for inputting a driving direction changeover switch state and suppressing an unnecessary alarm of the opposite direction signal, and an alarm. A reception processing unit 12 that realizes various processing units such as a buzzer sounding control, an alarm buzzer 13 that warns the train driver of the beginning of a signal, various switches such as a buzzer stop switch 14 and a driving direction switch 15, and an indicator light. The specified low-power radio 11 receives the alarm condition of the alarm transmitter 1 and inputs the reception frequency and the operation direction changeover switch state to the reception processing unit 8, and the unnecessary alarm of the opposite direction signal is provided. Except for the conditions, the alarm buzzer 13 is sounded for the train driver who mistakenly sees the stop sign and starts inward of the traffic light to prompt the brake operation for stopping the train immediately. It has become the jar.
[0015]
The in-vehicle device 3 is portable, and is installed on a cab by a train driver during train operation. At the time of installation, the power is turned on and the operation direction switch 15 is used to indicate the operation direction. When the train driver enters the inside of the traffic light 2 due to the progress of the traffic light 2 or the caution, the on-vehicle device 3 does not emit a warning because the warning transmitter 1 does not transmit the warning condition. If the traffic signal 2 starts to stop inside the traffic signal 2 erroneously, despite the stop announcement, the alarm transmitter 1 is transmitting the alarm condition. Is received by the reception processing unit 12, and is checked with the frequency indicated by the driving direction switch 15 of the on-vehicle device 3, and if they match, the alarm buzzer 13 is sounded. By the sounding of the alarm buzzer 13, the train driver immediately performs a brake operation to stop the train 4. If the frequency indicated by the driving direction switch 15 and the reception frequency do not match, the alarm buzzer 13 is not sounded due to an unnecessary alarm of the backward departure signal.
[0016]
The sounding of the alarm buzzer 13 is stopped by operating the buzzer stop switch 14 of the train driver. The operation of the buzzer stop switch 14 is maintained for a certain period of time, and the alarm buzzer 13 does not sound even when an alarm condition is received. The holding condition is automatically canceled after a lapse of a certain time. Therefore, when the train 4 is in the warning condition transmission range, the warning buzzer 13 sounds again.
[0017]
If there are two or more departure traffic lights 2 in the same direction and the warning propagation range 5 of the warning condition transmission radio wave of the warning transmitter 1 overlaps, the transmission processing units 8 of the warning transmitter 1 are connected to each other, and The user inputs the holding conditions when the status changes from the alerting status to the stopping status, thereby suppressing transmission of unnecessary alarm conditions.
[0018]
The embodiment in the case where the alarm transmitter 1 is installed in the on-site traffic signal and the block traffic light is also the same as the departure traffic light 2.
[0019]
In the above-described embodiment, the alarm transmitter 1 always transmits when the traffic light 2 is stopped, but when the track circuit is provided, the predetermined track circuit information is transmitted by the interlocking device or the like. The input by the unit 8 and the transmission time can be limited to the time when the train 4 starts inside the traffic light 2. However, since the track circuit information is located at a remote place, it is necessary to transmit it by a cable.
[0020]
The signal start warning device is composed of a general-purpose electronic circuit, but a failure of the alarm transmitter 1 is found by checking the vehicle-mounted device 3 at the time of maintenance and inspection, and a failure of the vehicle-mounted device 3 is dedicated to a start-up inspection during train operation. Discover by checking with a tester. In the above-described embodiment, since the in-vehicle device 3 is of a portable type, there is an advantage that no modification of the vehicle is required at the time of introduction. .
[0021]
In the above-described embodiment, the in-vehicle device 3 is described as being portable and installed on the cab by the train driver during train operation. However, it is not necessarily required to be portable, and the in-vehicle device 3 is fixedly installed on the cab. It may be something.
[0022]
【The invention's effect】
Since the present invention has the above-described configuration, the train operating speed is low, and in small and medium-sized private railways with a small number of trains operated, the train that has begun wrongly watching the stop signal of the traffic signal is automatically stopped outside the traffic signal. Instead of causing the train driver to start inside the traffic light, the train driver can be stopped by issuing an alarm. In addition, it is possible to easily introduce a small and medium-sized private railway in which conventional expensive ATS cannot be introduced, which is effective in preventing a driving accident.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a signal beginning warning device showing an embodiment of the present invention.
FIG. 2 is a schematic device block diagram of an alarm transmitter of the signal beginning alarm device.
FIG. 3 is a schematic block diagram of a device configuration of an in-vehicle device of the signal beginning warning device.
FIG. 4 is a block diagram showing a schematic configuration of a conventional ATS.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 alarm transmitter 2 departure signal 3 on-board unit 4 train 5 alarm propagation range 6 current sensor 7 current sensor unit 8 transmission processing unit 9 specified low power radio 11 specified low power radio 12 reception processing unit 13 alarm buzzer 14 buzzer stop switch 15 Operation direction switch

Claims (1)

It comprises an alarm transmitter attached to a ground signal, etc., and an in-vehicle device installed on the train cab, wherein the alarm transmitter detects the present state of the signal with a sensor, and sends the detection condition to the transmission processing unit. It determines whether or not an alarm is necessary by inputting, and when a stop is indicated, the radio always transmits an alarm to a specific section inside the traffic signal, and the on-vehicle device transmits the alarm condition from the radio of the alarm transmitter to the radio. The reception frequency and the driving direction changeover switch state are input to the reception processing unit, and the warning buzzer sounds to the train driver who inadvertently saw the stop sign and started inside the traffic light, immediately stopping the train A signal start warning device configured to prompt a brake operation for causing the signal to start.

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