JP2007125923A - Signal system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To identify the generation of short-circuit failure in a track circuit, and to improve the safety of following train operation by informing the identification of the generation of the short-circuit failure. <P>SOLUTION: A short-circuit identifying means identifies the generation of the short-circuit in the track circuit due to a train 10-1. When the generation of the short-circuit is identified, a failure signal sending means sends a failure identifying signal to a ground side. An indication controlling means controls a short-circuit failure warning light 41 laid at an entrance of a blocked section where the train 10-1 sending the failure identifying signal is on a rail to indicate a signal according to the identification of the generation of the short-circuit failure. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a signal system that identifies occurrence of a short circuit failure in a track circuit and performs signal display control according to the identification of the occurrence of the short circuit failure.

  2. Description of the Related Art Conventionally, train presence detection devices such as track relays that detect whether or not a train is present using a track circuit have been put into practical use as a train operation security device. This train presence detection device uses the voltage change of the track circuit that occurs when the left and right rails are short-circuited by the wheel and axle when the train enters the track circuit. It detects that there is a line.

  Therefore, in order to detect the train in the track circuit by the above-described train presence detection device such as the track relay, it is necessary to reliably short-circuit between the left and right rails by the wheel axle of the vehicle. However, depending on the state of the wheel tread or the rail top, the short circuit between the left and right rails may be insufficient, and the train may not be detected. Specifically, the contact resistance between the rail and the wheel due to an insulating film formed by dust, oil, rust, etc. formed on the rail surface in contact with the wheel, or a decrease in contact pressure when passing through a lightweight vehicle. And the short circuit failure of the track circuit has occurred. If this short circuit failure occurs, it is dangerous because the train cannot be detected.

  However, in the conventional technology, the train line detection device such as the track relay can identify the difference between the case where the train is not present in the track circuit and the case where the train presence detection device cannot be detected even if the train is present. The traffic lights were showing the same indication. Therefore, even if the train is present, if the train presence detector cannot detect it, the continuing train may enter the track circuit at a high speed and collide with the preceding train.

As a technique for improving such a problem, there is a short-circuit assisting device as disclosed in Patent Document 1, for example. This short-circuit assisting device destroys the insulating coating formed on the rail surface by applying a predetermined voltage between the left end portion and / or the right end portion of the front and rear wheel axles of the railway vehicle carriage. Thus, the contact resistance between the rail and the wheel is reduced.
JP 2004-224075 A

  In many cases, it is possible to reduce the contact resistance between the rail and the wheel by the technique of Patent Document 1, but the frequency of passing trains is extremely low on some routes such as a quiet line area and a vehicle base yard. Since the rust of the rail is remarkable, the short circuit failure may not be improved. Therefore, in order to operate the train safely, it is identified by some method whether the train is not actually present in the track circuit or whether the train is present but cannot be detected by the train presence detector. Need to provide for the train to continue.

  The present invention has been made in view of the above-described conventional circumstances, and identifies the occurrence of a short circuit failure in the track circuit and improves the safety of the subsequent train operation by notifying the identification of the occurrence of the short circuit failure. For the purpose.

The signal system of the first invention for solving the above problems is as follows:
Short-circuit failure identification means for identifying occurrence of short-circuit failure in the track circuit (for example, the power supplies 21a and 21b and the on-vehicle control device 25 in FIG. 7A);
Based on the result of identification by the short-circuit defect identification means, a presenting control is performed for causing a predetermined signal (for example, the short-circuit defect warning lamp 41 in FIG. 7B) to display a signal corresponding to the identification of the occurrence of a short-circuit defect. Means (for example, the display controller 45 in FIG. 7B);
It is equipped with.

  According to the first aspect of the invention, it is possible to identify the occurrence of a short circuit failure in the track circuit. Then, it is possible to perform control to display a signal corresponding to the identification of the occurrence of short circuit failure on a predetermined traffic light. According to this, even when the ground-side equipment cannot accurately grasp the presence of the train due to a short circuit failure of the track circuit, the identification of the occurrence of the short circuit failure can be notified to the outside, so the safety of the train operation can be improved. .

The signal system of the second invention is
Energizing means (e.g., power supplies 21a and 21b in FIG. 7A) for energizing at least the left and right wheels of the front and rear wheels, and a short circuit failure in the track circuit based on the energization status of the energizing means. Short circuit failure identifying means (for example, on-board control device 25 in FIG. 7A) for identifying the occurrence of occurrence and failure signal transmission means (for example, FIG. 7) for transmitting a failure identification signal in accordance with the identification of the short circuit failure identifying means. 7 (a) wireless transmitter 259) on the upper side of the vehicle,
On the basis of the reception of the defect identification signal transmitted from the defect signal transmission unit (for example, the wireless receiver 451 in FIG. 7B) and the reception unit receiving a defect identification signal, a predetermined signal ( For example, a display control means (for example, a display controller 45 in FIG. 7B) that performs control to display a signal corresponding to the identification of the occurrence of the short-circuit failure in the short-circuit failure warning lamp 41) in FIG. 7B. Is provided on the ground side.

  According to the second aspect of the present invention, if the short-circuit failure identification means is provided on the upper side of the vehicle and the short-circuit failure identification means identifies the occurrence of the short-circuit failure, the failure identification signal can be transmitted to the ground side. On the ground side, when a failure identification signal is received, control can be performed to display a signal corresponding to identification of occurrence of a short-circuit failure on a predetermined traffic signal. Therefore, the safety of train operation can be improved.

A third invention is the signal system of the second invention, wherein
The predetermined traffic signal is a permanent traffic signal laid at the entrance of the closed section,
The receiving means is means for receiving a failure identification signal that is laid for each blockage section and is transmitted from a train defect signal transmission means that exists in the blockage section,
The presenting control means controls the presenting of the predetermined traffic signal laid at the entrance of each blocked section in accordance with the reception of the defect identification signal of the receiving means laid in the blocked section. Laid for each of the predetermined traffic lights,
When the occurrence of a short-circuit failure is identified by the short-circuit failure identification means, a signal signal corresponding to the identification of the occurrence of a short-circuit failure is provided by a permanent traffic signal laid at the entrance of the closed section where the train that has identified the occurrence of the short-circuit failure exists. The indication is to be made.

  According to the third aspect, when the occurrence of a short circuit failure is identified on the upper side of the vehicle, the failure identification signal can be received by the receiving means laid for each blockage section. Then, in response to the reception of the defect identification signal, it is possible to perform a control to display a signal corresponding to the identification of the occurrence of the short-circuit defect on the permanent traffic signal laid at the entrance of the blockage section. Therefore, when the occurrence of a short circuit failure is identified on the upper side of the vehicle, the identification of the occurrence of the short circuit failure can be notified to the outside by a signal display of a permanent traffic signal laid at the entrance of the closed section where the train exists. Therefore, it becomes possible to call attention to the driver of the following train, and a safer train operation can be realized.

4th invention is the signal system of 2nd invention,
The predetermined traffic signal is a permanent traffic signal laid at the entrance of the closed section,
Based on the reception of the defect identification signal by the receiving means, the presenting control means specifies the predetermined traffic signal laid at the entrance of the blockage section where the train that has transmitted the defect identification signal is located (FIG. The short-circuit failure monitoring device 80) is controlled to display a signal corresponding to the identification of the occurrence of the short-circuit failure on the predetermined traffic light specified by the specifying means.

  According to the fourth aspect of the present invention, based on the reception of the defect identification signal, it is possible to identify a permanent traffic signal laid at the entrance of the closed section where the train that transmitted the defect identification signal is located. And since it is possible to perform control to display a signal corresponding to the identification of the occurrence of a short circuit failure on the specified permanent traffic signal, when the occurrence of a short circuit failure is identified on the upper side of the vehicle, the entrance of the blockage section where the train exists The identification of the occurrence of the short-circuit failure can be notified to the outside by the signal display of the permanent traffic signal laid on the outside. Therefore, it becomes possible to call attention to the driver of the following train, and a safer train operation can be realized.

  According to the present invention, occurrence of a short circuit failure in a track circuit can be identified. Then, it is possible to perform control to display a signal corresponding to the identification of the occurrence of short circuit failure on a predetermined traffic light. According to this, even when the ground-side equipment cannot accurately grasp the presence of the train due to a short circuit failure of the track circuit, the identification of the occurrence of the short circuit failure can be notified to the outside, so the safety of the train operation can be improved. .

  Hereinafter, a signal system to which the present invention is applied will be described in detail with reference to the drawings.

[First Embodiment]
First, the first embodiment will be described.

[Overview]
FIG. 1 is a diagram for explaining an outline of the overall configuration of the signal system 1. As shown in FIG. 1, the signal system 1 mainly includes (1) a short-circuit defect identification unit, (2) a defect signal transmission unit, and (3) a display control unit. When the occurrence of a short-circuit failure is identified by the short-circuit failure identification unit 10-1, a failure identification signal is transmitted to the ground side by the failure signal transmission unit.

  And the signal display of the short circuit failure warning lamp 41 laid at the entrance of the closed section B where the train 10-1 that transmitted the failure identification signal is located is controlled by the display control means. This short circuit failure warning lamp 41 is a dedicated signal device for informing the identification of the occurrence of a short circuit failure, and is laid as a permanent signal device at the entrance of each closed section B.

  Hereinafter, each means will be described in order.

(1) Short-circuit defect identification means FIG. 2 is a diagram for explaining the short-circuit defect identification means. In FIG. 2, an example of the configuration of the railcar bogie 11 is shown. As shown in FIG. 2, the front of the bogie 11 for the railway vehicle 11 traveling on the two rails r1 and r2 includes a left wheel 13a, a right wheel 13c, and an axle 15a in the traveling direction. A wheel shaft 17a is attached, and a wheel shaft 17b including a left wheel 13b, a right wheel 13d, and an axle 15b in the traveling direction is attached to the rear of the carriage. The wheel shafts 17a and 17b are supported while being insulated from the bogie frame. Since the insulating structure between the wheel shaft and the bogie frame is a known structure as disclosed in Patent Document 1 described above, the description thereof is omitted in this specification.

  The power supplies 21a and 21b are connected between the left end portions and / or the right end portions of the axles 15a and 15b, respectively, and the output terminal voltages thereof are input to the on-board control device 25, respectively.

  The power supplies 21a and 21b are synchronously controlled in phase of the output voltage, and apply voltage between the left and right axle ends by an AC power supply. The power supplies 21a and 21b are not limited to AC power supplies, and DC power supplies may be used. Here, the path of the current supplied by the power supplies 21a and 21b will be described with reference to FIG. As shown in FIG. 3, a closed loop of current passing through the power supply 21a, flowing through the rail r1 from one end of the axle 15a through the wheel 13a, and flowing to one end of the axle 15b through the wheel 13b by the current supplied from the power supply 21a. R1 is formed. Similarly, a closed loop R2 of a current flowing through the power source 21b, flowing through the rail r2 from the other end of the axle 15a via the wheel 13c, and flowing to the other end of the axle 15b via the wheel 13d is caused by the current supplied from the power source 21b. It is formed.

  Thus, the rail surface which contacts a wheel by applying predetermined AC voltage between the left ends of an axle and / or between right ends by power supplies 21a and 21b to form closed loops R1 and R2 of a predetermined voltage. The insulating film formed on the rail is destroyed, and the contact resistance between the left and right rails and the wheel is lowered, so that the short circuit state of the track circuit is improved.

  The on-board controller 25 identifies (estimates) the occurrence of a short circuit failure by determining whether or not the output terminal voltages of the power supplies 21a and 21b are equal to or lower than a predetermined threshold value.

  This will be specifically described. As described above, a predetermined AC voltage is applied between the left end portions and between the right end portions of the axles by the power sources 21a and 21b. At this time, if the output terminal voltage is equal to or lower than a predetermined threshold, Since the energization between the rear wheels is good, it is determined that the track short-circuit state is good. On the other hand, when the output terminal voltage is larger than the predetermined threshold, it is determined that the state of the track short circuit is defective, and the occurrence of the short circuit failure is identified. Thus, the short circuit failure identification means monitors the energization state between the rail and the wheel on the upper side of the vehicle, and identifies the occurrence of the short circuit failure based on the energization state.

(2) Defective Signal Transmitting Unit FIG. 4 is a diagram for explaining the defective signal transmitting unit. As shown in FIG. 4, the signal system of the first embodiment includes an on-board control device 25 provided on the upper side of the vehicle, and a short circuit failure warning lamp 41 (41-0 to 41-) laid at the entrance of each closed section. 3) It includes display controllers 45 (45-1 to 45-3) laid corresponding to each, and the on-board controller 25 and the display controller 45 are configured to be capable of wireless communication with each other. Yes.

  When the occurrence of a short-circuit failure is identified by the short-circuit failure identification unit, the failure signal transmission unit identifies the short-circuit failure warning lamp 41 in the blockage section where the own train is currently located, and A failure identification signal is transmitted to the display controller 45 that controls the signal display.

For example, in the scene of FIG. 4, it is assumed that the occurrence of a short circuit failure is identified by the short circuit failure identifying means in the train 10 existing in the closed section B-1. In this case, the short signal failure warning light 41-1 laid at the entrance of the block section B-1 where the own train is located is specified by the failure signal transmission means, and the signal of the specified short circuit failure warning light 41-1 is identified. A defect identification signal is transmitted to the display controller 45-1 that controls the display.
Similarly, when the occurrence of a short circuit failure is identified by the short circuit failure identification means while traveling in the closed section B-2, a failure identification signal is transmitted to the display controller 45-2.

(3) Presenting control means The presenting control means is the presenting controller 45 shown in FIG. 4, and performs lighting control of the corresponding short circuit failure warning lamp 41 based on reception of the failure identification signal. For example, the current display controller 45-1 performs lighting control of the corresponding short-circuit failure warning lamp 41-1 based on reception of the failure identification signal.

  FIG. 5 is a circuit diagram for realizing the function of the display control means. The circuit shown in FIG. 5 includes a time relay composed of a coil (timer) 46 and an a contact (instantaneous operation / time-recovery contact) 46a, a relay composed of a coil 47 and an a contact 47a, and a current to each relay. The power supply 48 etc. for flowing are comprised. When the coil 47 and the instantaneous operation / time return contact 46a are connected in series, the a contact 47a and the short circuit failure warning lamp 41 are connected in series, and the instantaneous operation / time return contact 46a is closed. The a contact 47a is closed and the short circuit failure warning lamp 41 is turned on.

  Specifically, the determination unit 453 outputs an on / off signal in response to the reception of the defect identification signal by the wireless receiver 451 (see FIG. 7), and the determination unit 453 outputs an on signal. Then, a current flows through the timer 46 and the instantaneous operation / time return contact 46a is closed. In response to this, a current flows through the coil 47 and the a contact 47a is closed. If the contact a 47a is closed, the short circuit failure warning lamp 41 is turned on.

  When the output signal level from the determination unit 453 becomes L level after the ON signal is output from the determination unit 453 in response to the reception of the defect identification signal, the timer 46 passes the preset predetermined time. Time. If the predetermined time has elapsed, the timer 46 returns the instantaneous operation / time limit return contact 46a to open the contact. In this case, the coil 47 is demagnetized, the a contact 47a is opened, and the short circuit failure warning lamp 41 is turned off. That is, the short circuit failure warning lamp 41 is turned off after being turned on for a predetermined time.

  Although the short circuit failure warning lamp 41 is turned on for a predetermined time, it may be turned off when the train advances from a closed section where the short circuit failure warning lamp 41 is laid. More specifically, the short circuit failure warning lamp 41 is turned off when the block signal set in the block section shows yellow.

  This will be specifically described with reference to FIG. In the example of Fig.6 (a), the train exists in obstruction | occlusion area B-12. In this case, the signal display of the blocking signal installed at the entrance of the blocking section B-12 is “R”, and the signal indicating the blocking signal of the blocking section B-13 immediately before the blocking section B-12 is displayed. The indication is “Y”, and the signal indication of the obstruction signal in the obstruction section B-14 two before is “G”.

  Here, it is assumed that the short-circuit failure identification means of the train 10 identifies the occurrence of a short-circuit failure and transmits a failure identification signal to the ground side. In this case, the short circuit failure warning lamp 41 at the entrance of the closed section B-12 is turned on. This short circuit failure warning lamp 41 is turned off when the train 10 advances from the closed section B-12. That is, as shown in FIG. 6 (b), when the train 10 enters the front blockage section B-11 and the signal display of the blockage traffic signal in the blockage section B-12 changes to “Y”, the short circuit is defective. The warning light 41 is turned off.

  As described above, when the occurrence of the short circuit failure of the track circuit by the train 10 is identified, the signal is indicated by the short circuit failure warning lamp 41, and the line is connected to the closed section B inside the short circuit failure warning lamp 41. It is notified that the occurrence of a short circuit failure has been identified in the train. Therefore, it becomes possible to alert the driver of the subsequent train 10 existing outside the short circuit failure warning light 41, and a safer train operation can be realized.

[Function configuration]
FIG. 7 is a block diagram illustrating an example of a functional configuration of the signal system in the first embodiment. FIG. 7A illustrates a configuration of a functional unit provided on the vehicle upper side, and FIG. 7B illustrates each blockage on the ground side. It is a figure which shows the structure of the function part comprised for every area, respectively.

  As shown in FIG. 7 (a), the signal system of the first embodiment is a functional unit on the upper side of the vehicle, between the left end portions of the axles 15a and 15b (see FIG. 2) before and after the railcar carriage 11. A power source 21a to be connected, a power source 21b connected between the right end portions, and an on-vehicle control device 25 are included.

  The power supplies 21a and 21b are power supplies that convert electric power or storage battery power supplied from an overhead line via a pantograph into alternating current or direct current and output the same.

  The on-board control device 25 includes a processing device 251 such as a CPU, a storage device 253 such as a ROM and a RAM, a wireless transmitter 259 for transmitting a failure identification signal to the display controller 45, and the like. The storage device 253 stores current position information 255 and a warning light management table 257.

  The processing device 251 calculates the travel distance from the reference position of the traveling route (that is, the current position) at any time according to, for example, the integration of the vehicle speed signal input from a speed generator (not shown) or the pulse count. The calculated current position is updated / stored in the storage device 253 as current position information 255.

  Moreover, the processing apparatus 251 monitors the state of the track short circuit by the train by determining whether or not the output terminal voltages of the power supplies 21a and 21b are equal to or lower than a predetermined threshold value. When the occurrence of a short circuit failure is identified by the state of the track short circuit (when the output terminal voltages of the power supplies 21a and 21b are larger than a predetermined threshold value), the warning light management table 257 is referred to and the current position information 255 is stored. In addition, the short circuit failure warning lamp 41 in the closed section where the own train is present is specified.

  FIG. 8 is a diagram illustrating a data configuration example of the warning light management table 257. As shown in FIG. 8, the warning light management table 257 is assigned to the presenting controller ID assigned to the presenting controller 45 that controls the signal presenting of the short circuit failure warning light 41 and the short circuit failure warning light 41. 3 is a data table that defines the correspondence between the received warning light ID and the position information of the entrance and exit of the closed section where the short circuit failure warning light 41 is laid. When the processing device 251 refers to the warning light management table 257 and identifies the short circuit failure warning light 41 in the blockage section where the own train is present, the signal of the short circuit failure warning light 41 identified through the wireless transmitter 259 is identified. The display controller ID and the defect identification signal are transmitted to the display controller 45 that controls the display.

  Further, as shown in FIG. 7B, as a functional unit on the ground side, a display controller 45 and a short circuit failure warning lamp 41 are included, and the display controller 45 is connected to the display controller 45. And a wireless receiver 451 for receiving the transmitted defect identification signal.

  If the presenting controller 45 receives a defect identification signal from the on-board controller 25 via the wireless receiver 451, the presenting controller 45 controls the lighting of the corresponding short-circuit defect warning lamp 41 and notifies the identification of the occurrence of the short-circuit defect. .

  As described above, according to the first embodiment, it is possible to monitor the state of the track short circuit by the train on the upper side of the vehicle and identify the occurrence of a short circuit failure. And if generation | occurrence | production of a short circuit failure is identified, a failure identification signal is transmitted to the display controller 45 which controls the signal display of the short circuit failure warning lamp 41 laid in the entrance of the blockage section where the said train exists. Can do. Therefore, since it can be notified that the occurrence of the short circuit failure has been identified in the train existing in the closed section B inside the short circuit failure warning lamp 41, the driver of the following train is alerted. This makes it possible to realize safer train operations.

[Second Embodiment]
Next, a second embodiment will be described. In the following description, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

[Overview]
FIG. 9 is a diagram for explaining the signal system according to the second embodiment. In the second embodiment, the defect signal transmitting means and the present control means of the first embodiment described above are replaced with the configuration shown in FIG.

  As shown in FIG. 9, the signal system of the second embodiment includes an onboard control device 25b provided on the upper side of the vehicle, and a short circuit failure warning lamp 41 (41-0 to 41-2) laid at the entrance of each closed section. ) The display controller 45b (45b-1 to 45b-2) laid corresponding to each, and each functional part of the short-circuit failure monitoring device 80 corresponding to the display control means is configured, and the short-circuit failure monitoring device 80 is connected to the on-board controller 25b and the present controller 45b via a wireless communication network. As this wireless communication network, a dedicated line network may be used, or a public line network such as PHS (Personal Handyphone System) may be used.

  In the signal system according to the second embodiment, the failure signal transmission unit transmits a failure identification signal to the short-circuit failure monitoring device 80 via the wireless communication network when the occurrence of the short-circuit failure is identified by the short-circuit failure identification unit. Specifically, the on-board controller 25b calculates and holds the current position of the own train as needed in the same manner as in the first embodiment, and the occurrence of a short circuit failure is identified by the short circuit failure identification unit as described above. In this case, the current position information and the defect identification signal are transmitted to the short circuit defect monitoring device 80.

  The short circuit failure monitoring device 80 is installed on the management side of a railway company such as a command room or the nearest station, for example, and controls the signal system in an integrated manner. Specifically, if a failure identification signal is received, the short-circuit failure warning light 41 in the blockage section where the train that has transmitted the failure identification signal is located is identified based on the current position information, and the identified short-circuit failure warning light is identified. A lighting instruction is notified to the display controller 45b which controls the signal display of 41.

  For example, in the scene of FIG. 9, it is assumed that the occurrence of a short circuit failure is identified by the short circuit failure identification unit in the train 10b existing in the closed section B-1. In this case, the current position information and the defect identification signal are transmitted to the short circuit defect monitoring device 80 by the defect signal transmitting means. On the other hand, in the short circuit failure monitoring device 80, the short circuit failure warning lamp 41-1 in the closed section B-1 where the train 10b that transmitted the failure identification signal is located is specified based on the current position information transmitted together with the failure identification signal. The lighting instruction is notified to the display controller 45b-1 of the specified short-circuit failure warning lamp 41-1.

[Functional configuration of short-circuit failure monitoring device]
FIG. 10 is a block diagram illustrating an example of a functional configuration of the short-circuit failure monitoring device 80. As shown in FIG. 10, the short circuit failure monitoring device 80 is a communication for performing data communication with a processing device 82 such as a CPU, a storage device 85 such as a hard disk, an on-board control device 25b, and a display controller 45b. The storage device 85 stores a warning light management table 851 and a defect identification history 853. The device 84, the input device 81, the display device 83, and the like are included.

  When the processing device 82 receives the defect identification signal from the on-board control device 25b via the wireless communication network, the processing device 82 refers to the warning light management table 851 and based on the current position information transmitted together with the defect identification signal. The short circuit failure warning lamp 41 in the blockage section where the train that has transmitted the failure identification signal is located is specified. And the lighting instruction | indication is notified with respect to the indication controller 45b which controls the signal indication of the specified short circuit failure warning lamp 41. FIG. The data structure of the warning light management table 851 is the same as that of the warning light management table 257 shown in FIG. 8, and is assigned to the display controller 45b that controls the signal display of the short circuit failure warning light 41. The correspondence relationship between the display controller ID, the warning light ID assigned to the short circuit failure warning light 41, and the position information of the start position and the end position of the closed section where the short circuit failure warning light 41 is laid is defined. It is a data table.

  Further, the processing device 82 associates the current position information transmitted together with the defect identification signal with the date and time information at the time of reception, and accumulates and stores it in the storage device 85 as the defect identification history 853 for management. By using this defect identification history 853 for grasping a point requiring attention and a point requiring attention, it becomes possible to improve the maintainability of train operation.

  As described above, according to the second embodiment, it is possible to determine the short circuit state of the track circuit by the train on the upper side of the vehicle and identify the occurrence of the short circuit failure. If the occurrence of a short circuit failure is identified, a failure identification signal is transmitted to the short circuit failure monitoring device 80, and a short circuit failure warning laid at the entrance of the blockage section where the train is located is controlled by the short circuit failure monitoring device 80. The signal corresponding to the identification of the occurrence of the short-circuit failure can be displayed on the lamp 41. Therefore, it becomes possible to call attention to the driver of the following train, and a safer train operation can be realized.

[Modification]
The preferred embodiments of the present invention have been described above, but the present invention is not limited to those described above, and can be changed as appropriate without departing from the spirit of the invention.

  For example, in the above-described embodiment, the output terminal voltages of the power supplies 21a and 21b are determined and the occurrence of the short-circuit failure is identified.

  That is, it may be determined whether the power supplies 21a and 21b are in the constant current mode (the state in which the output current does not change) or the constant voltage mode (the state in which the output voltage does not change), and the occurrence of the short-circuit failure is identified. Specifically, when the power supplies 21a and 21b are in the constant current mode, it is determined that the state of the track short-circuit is good because the energization between the front and rear wheels is good. On the other hand, in the constant voltage mode, it is determined that the track short-circuit state is defective. In this case, it is not necessary to set a threshold value.

  Or it is good also as detecting generation | occurrence | production of a short circuit defect by detecting the electric current amount supplied by the power supplies 21a and 21b. Specifically, if the detected current amount is equal to or greater than a predetermined threshold value, it is determined that the state of the track short-circuit is good because the energization between the front wheel shaft and the rear wheel shaft is good. On the other hand, when it is less than the predetermined threshold value, it is determined that the state of the track short circuit is defective.

  Moreover, in the above-described embodiment, a case where a dedicated signal device for informing the occurrence of a short-circuit failure is described as an example, but a signal corresponding to the identification of the occurrence of a short-circuit failure is given to an existing permanent signal device. It may be shown.

  For example, a signal corresponding to the identification of the occurrence of a short circuit failure may be displayed on a block signal that is laid at the entrance of each block section and displays a signal to the train. For example, when the occurrence of a short circuit failure is identified on the upper side of the vehicle, the indication of the block signal in the block section where the train is located is changed to a stop indication.

  FIG. 11 is a circuit diagram for realizing the function of the presenting control means in this case. In the circuit shown in FIG. 11, the rail in the closed section B-21 is a part of the track circuit, and the power source 51 is connected to the terminal side (train advance side), and the track relay ( A train presence line detecting device) 53 is provided. And the a contact 531a of the track relay 53, the b contact 471b of the relay 470, and the green lamp 61 of the block signal set laid at the entrance of the block section B-21 are connected in series. In addition, a b-contact 531b of the track relay 53 and a red light 63 of a block signal set at the entrance of the block section B-21 are connected in series, and an a-contact 471a of the relay 470 is connected to the b-contact 531b of the track relay 53. Are connected in parallel. Further, the coil 471 of the relay 470 and the contact a (instantaneous operation / time-recovery contact) 461a of the time relay 460 are connected in series.

  The operating principle of the present control means in this case is as follows. That is, when a train enters the closed section B-21 and the right and left rails are short-circuited satisfactorily by the wheel and axle, the track relay 53 is turned off and the a-contact 531a is opened and the b-contact is opened. 531b closes. In this state, the red lamp 63 is turned on and the green lamp 61 is turned off. On the contrary, when the train is not present in the closed section B-21, the track relay 53 is turned on, the a contact 531a is closed, and the b contact 531b is opened. In this state, the green lamp 61 is turned on and the red lamp 63 is turned off.

  Further, when the determination unit 453 outputs an ON signal in response to the reception of the defect identification signal by the wireless receiver 451, the operation is as follows. That is, a current flows through the timer 461 and the instantaneous operation / time return contact 461a is closed. In response to this, a current flows through the coil 471, the b contact 471b is opened, and the a contact 471a is closed. In this state, the red lamp 63 is turned on and the green lamp 61 is turned off. In other words, even if the track relay 53 does not detect the presence of the train, the indication of the block signal is forcibly stopped. Although the red lamp 63 is turned on in response to the reception of the defect identification signal, it may be turned off.

  In addition, when the output signal level from the determination unit 453 becomes L level, the timer 461 counts the elapse of a predetermined time set in advance. If the predetermined time has elapsed, the timer 461 returns the instantaneous operation / time limit return contact 461a to open the contact. In this case, the coil 471 is demagnetized, the b contact 471b is closed, and the a contact 471a is opened.

  In the above example, when the occurrence of a short circuit failure is identified, the indication of the block signal is changed to the stop indication. It is good also as notifying of identification. In the above-described example, the display control circuit system of two display signals has been described as an example. However, even in the case of two displays, other display control circuit systems and display control of three or more signals are displayed. The circuit system can be applied as appropriate without departing from the spirit of the invention.

  Further, not only the signal display on the ground side, but also a notification for notifying the identification of the occurrence of a short circuit failure may be performed on an in-vehicle signal display provided in the driver's seat of the vehicle. For example, in a known automatic train control (ATC) system, when a short circuit failure identifying means for a train traveling in a blockage section identifies occurrence of a short circuit failure, it is assigned in advance to signal equipment on the ground. The signal of the frequency for defect identification signal is supplied to the blockage section before the track circuit, and the defect identification signal is transmitted to the upper side of the train in the blockage section.

  And in the train which received the defect identification signal, a short circuit defect identification display is output together with the in-vehicle speed signal display. FIG. 12 is a diagram showing an example of the in-vehicle signal display 90 in this case. The in-vehicle signal display 90 shown in FIG. 12 includes a defect identification signal 95 that outputs a short-circuit defect identification display in addition to the conventional configuration including the speedometer 91 and the in-vehicle signal 93. 95 is turned on when a defect identification signal is received.

The figure for demonstrating the outline of the whole structure of a signal system. The figure which shows an example of a structure of the bogie for rail vehicles. The figure for demonstrating the path | route of the electric current supplied by a power supply. The figure for demonstrating the defect signal transmission means in 1st Embodiment. The circuit diagram for implement | achieving the function of the display control means in 1st Embodiment. The figure for demonstrating the modification of the extinction timing of a short circuit failure warning lamp. The block diagram which shows an example of a function structure of the signal system in 1st Embodiment. The figure which shows the data structural example of a warning light management table. The figure for demonstrating the signal system of 2nd Embodiment. The block diagram which shows an example of a function structure of a short circuit defect monitoring apparatus. The circuit diagram for implement | achieving the modification of a presenting control means. The figure which shows an example of the in-vehicle signal indicator provided with the defect identification signal.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Signal system 10 Train 11 Railway vehicle bogies 13a-13d Wheel 15a, 15b Axle 17a, 17b Wheel axle 21a, 21b Power supply 25 On-vehicle control device 251 Processing device 253 Storage device
255 Current location information
257 Warning light management table 259 Wireless transmitter 41 Short circuit failure warning light 45 Current controller 451 Wireless receiver B Blocking section r (r1, r2) Rail

Claims (4)

Short-circuit failure identification means for identifying occurrence of short-circuit failure in the track circuit;
Based on the identification result by the short-circuit failure identification unit, a display control unit that performs control to display a signal corresponding to the identification of the occurrence of the short-circuit failure in a predetermined traffic light,
Signal system with Energization means for energizing at least one of the left and right wheels of the front and rear wheel axles, short circuit failure identification means for identifying occurrence of a short circuit failure in the track circuit based on the energization status of the energization means, and the short circuit failure Provided on the vehicle upper side with a failure signal transmission means for transmitting a failure identification signal according to the identification of the identification means,
A receiving means for receiving a defect identification signal transmitted from the defect signal transmitting means, and a control for causing a predetermined signal device to display a signal corresponding to the identification of the occurrence of a short-circuit defect based on reception of the defect identification signal by the receiving means. A signal system comprising display control means for performing on the ground side. The predetermined traffic signal is a permanent traffic signal laid at the entrance of the closed section,
The receiving means is means for receiving a failure identification signal that is laid for each blockage section and is transmitted from a train defect signal transmission means that exists in the blockage section,
The presenting control means controls the presenting of the predetermined traffic signal laid at the entrance of each blocked section in accordance with the reception of the defect identification signal of the receiving means laid in the blocked section. Laid for each of the predetermined traffic lights,
When the occurrence of a short-circuit failure is identified by the short-circuit failure identification means, a signal signal corresponding to the identification of the occurrence of a short-circuit failure is provided by a permanent traffic signal laid at the entrance of the closed section where the train that has identified the occurrence of the short-circuit failure exists. 3. Signal system according to claim 2, characterized in that an indication is made. The predetermined traffic signal is a permanent traffic signal laid at the entrance of the closed section,
The presenting control means has a specifying means for specifying the predetermined traffic signal laid at the entrance of the blockage section where the train that has transmitted the defect identification signal is based on reception of the defect identification signal by the receiving means. Then, control is performed to display a signal corresponding to the identification of the occurrence of short circuit failure in the predetermined traffic light specified by the specifying means.
The signal system according to claim 2.

Images