JPH101054A - Display device of train location and fault point - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display the position of a train in the real-time mode and to locate a fault which has occurred in rails and then display the fault point. SOLUTION: When a train 1 gets into a track circuit BT, a position detection part 8 compares ATC sending currents measured by a current measurement part 6 with the variation characteristics between train positions and ATC sending currents stored in a position/current characteristics storage part 5 to thus estimate the position of the train. An indicator 9 indicates the position of the train 1 in the track circuit, which position is to be sequentially shifted, to specify the position of the train. If a fault detection part 7 detects a fault in the track circuit, the position detection part 8 locates the train at the time the fault has occurred based on the ATC sending current measured by the current measurement part 6 which has varied from the preceding ATC sending currents upon passing of the train and on the variation characteristics between train positions and ATC sending currents stored in the position/current characteristics storage part 5, and estimates the located position to be the position where the fault has occurred.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device for continuously displaying the position of a train on a track circuit as the train travels, and displaying a fault occurrence position when a fault occurs in the track circuit. It is about.

[0002]

2. Description of the Related Art In order to detect a train, a track circuit utilizing the fact that two rails are electrically short-circuited at the axle of a train 1 is used. In order to detect a train with this track circuit, as shown in FIG. 8, a transmitter 2 is provided at a boundary point on the train entry side of the track circuit BT, and a receiver 3 is provided at a boundary point on the train entry side of the track circuit BT. The two rails are connected to form an electric circuit using two rails. Then, the two rails of the track circuit BT are transmitted from the transmitter 2 connected to the boundary point on the train exit side to the AT.
The C signal current flows, and the presence or absence of the ATC signal current flowing in the track circuit BT is detected by the receiver 3 to detect whether or not the train 1 is on the track circuit BT and display it on the display 9. I have. Also, when two rails of the track circuit BT are short-circuited or a rail breakage occurs, the occurrence of a failure is detected by the presence or absence of detection of the ATC signal current in the receiver 3.

[0003]

However, the length of one track circuit is as long as 1.5 km in the case of a Shinkansen, for example. When the position of a train is detected using this track circuit as a unit, the train actually travels. It was not possible to detect and display the position of the train in real time, and it was difficult to grasp the detailed train position. For example, as shown in FIG. 9, the train 1a is located near the entry end of the track circuit AT, the train 1b is located near the entry end of the track circuit BT, and the distance between the train 1a and the train 1b is one track circuit. Even if the train length is much longer than the length, the train position display is displayed as if the train is on the entire track circuit AT and track circuit BT. Also,
When the train 1c is on the track circuit CT and the track circuit DT, it is displayed that the train is on the entire track circuit CT and the track circuit DT.

Further, when a failure occurs in the rail, the occurrence of the failure can be detected on a track circuit basis, but the position at which the failure has occurred cannot be automatically specified. It takes a lot of time to detect. Further, it was not possible to automatically determine whether the failure was a short-circuit between two rails or a break in the rail, and the cause of the failure that did not reach the failure occurrence position was not clarified.

The present invention has been made in order to solve such disadvantages, and displays the position of a train in real time, and specifies and displays the cause and position of a failure when a failure occurs in the rail. It is an object of the present invention to obtain a display device of a train position and a failure point which can be used.

[0006]

A train position and fault point display device according to the present invention has a transmitter, a receiver, a train position detector, and a display, and the transmitter is provided on a train exit side of a track circuit. ATC signal is transmitted to the boundary point of the track circuit, the receiving unit receives the signal from the track circuit at the boundary point on the train entry side of the track circuit, and the train position detector detects the position of the train on the track circuit and the failure of the track circuit. When a fault occurs, the fault location is detected.
It has a position / current characteristic storage unit, a current measurement unit, a failure detection unit, and a position detection unit. The position / current characteristic storage unit stores in advance the transmitter according to the position of the train on the track circuit (track short-circuit position). The change of the transmission current of the ATC signal transmitted to the track circuit is measured and stored. The current measurement unit detects the transmission current of the ATC signal transmitted from the transmitter to the track circuit, and the failure detection unit measures the current by the current measurement unit. The ATC transmission current and the change characteristic of the ATC transmission current stored in the position / current characteristic storage section are compared with the current near the train entry end, and the current near the train entry end stored in the measured ATC transmission current. When the value changes from the value, it is determined that a failure has occurred in the track circuit, the cause of the failure is specified based on the change state of the measured ATC transmission current, and the position detection unit detects that the train has entered the track circuit by the reception unit. Then, the ATC transmission current measured by the current measurement unit is compared with the change characteristics of the ATC transmission current and the train position stored in the position / current characteristic storage unit to estimate the position of the train, and from the failure detection unit ATC measured by current measurement unit when notification of track circuit failure occurrence is received
When the transmission current changes due to running of the train, the current at the time of the change, the train position stored in the position / current characteristic storage unit, and the change characteristic of the ATC transmission current are compared, and the position of the train at that time causes a failure. The position is estimated and the display sequentially displays the train position estimated by the position detection unit, and when the failure detection unit detects the occurrence of a failure in the track circuit, the failure occurrence and the failure occurrence position estimated by the position detection unit are displayed. It is characterized by doing.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, a transmitter connected to a boundary point on the exit side of a train, a receiver connected to a boundary point on the entrance side of a train, a train position detecting unit, and A display connected to a train position detector of the track circuit. The train position detection unit has a position / current characteristic storage unit, a current measurement unit, a failure detection unit, and a position detection unit. In the position / current characteristic storage unit, a change in the ATC transmission current transmitted from the transmitter to the track circuit is measured and stored in advance according to the position of the train on the track circuit (track short-circuit position). The current measuring unit constantly detects the transmission current of the ATC signal transmitted from the transmitter to the track circuit.

[0008] When the receiver detects that the train has entered the track circuit, the position detection unit detects the ATC transmission current measured by the current measurement unit, the train position stored in the position / current characteristic storage unit, and the ATC. The position of the train is estimated by comparing the change characteristics of the transmission current and the estimated train position is sequentially sent to the display. The display sequentially moves and displays the position of the train in the track circuit that moves as the train travels, and clarifies the position of the train.

Further, the failure detecting unit constantly monitors the ATC transmission current measured by the current measuring unit,
The change characteristics of the transmission current and the ATC transmission current stored in the position / current characteristic storage unit are compared with the current near the train entry end, and the measured ATC transmission current changes from the current value near the train entry end stored in the memory. Then, it is determined that a failure has occurred in the track circuit, and the cause of the failure is specified based on a change in the measured ATC transmission current. When the ATC transmission current measured by the current measurement unit changes due to the running of the train when the failure detection unit detects the occurrence of a failure in the track circuit, the position detection unit changes the ATC transmission current and the position / current. The position of the train at that time is specified based on the train position and the change characteristic of the ATC transmission current stored in the characteristic storage unit, and is estimated as the failure occurrence position. When the failure detection unit detects the occurrence of a failure in the track circuit, the display unit displays the failure cause and the failure occurrence position estimated by the position detection unit to clarify the failure situation.

[0010]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. As shown in the figure, a transmitter 2, a receiver 3, and a train position detector 4 are provided for each of the track circuits AT to CT. The transmitter 2 is connected to a boundary point of each of the track circuits AT to CT on the advance side of the train 1, and transmits an ATC signal to the rail for each of the track circuits AT to CT. Receiver 3 has each track circuit A
An ATC signal current that is connected to a boundary point on the entry side of the train 1 from T to CT and flows through the rail for each of the track circuits AT to CT is detected. As shown in the block diagram of FIG. 2, the train position detection unit 4 includes a position / current characteristic storage unit 5, a current measurement unit 6, a failure detection unit 7, and a position detection unit 8. The change of the ATC transmission current transmitted from the transmitter 2 to the track circuit BT is measured and stored in the position / current characteristic storage unit 5 in accordance with the position of the train 1 on the track circuit BT (track short-circuit position). . That is, ATC flowing from the transmitter 2 to the track circuit BT
As shown in the change characteristic diagram of the train position and the ATC transmission current in FIG. 3, the signal current changes as the train 1 enters the track circuit BT and then approaches the transmitting end of the ATC signal on the exit side. Increases almost in proportion to the distance from the train to the train 1. The change characteristic of the ATC transmission current with respect to the train position shown in FIG. 3 is measured in advance and stored in the position / current characteristic storage unit 5. The current measuring unit 6 detects the transmission current of the ATC signal transmitted from the transmitter 2 to the track circuit BT.
The failure detection unit 7 compares the ATC transmission current measured by the current measurement unit 6 with the change characteristic of the ATC transmission current stored in the position / current characteristic storage unit 5 in the vicinity of the train entry end,
Judging that a failure has occurred in the track circuit BT when the measured ATC transmission current has changed from the stored current value near the train entry end, and specifying the cause of the failure based on the measured ATC transmission current change I do. When the receiving unit 3 detects that the train 1 has entered the track circuit BT, the position detecting unit 8 detects the ATC transmission current measured by the current measuring unit 6 and the train position stored in the position / current characteristic storing unit 5. And the change characteristic of the ATC transmission current to estimate the position of the train.
Further, when the position detector 8 receives the notification of the occurrence of the failure of the track circuit BT from the failure detector 7, when the ATC transmission current measured by the current measurement unit 6 changes due to the running of the train 1, the change is made The ATC transmission current at this time is compared with the train position stored in the position / current characteristic storage unit 5 and the change characteristic of the ATC transmission current, and the position of the train 1 at that time is estimated as a failure occurrence position.

The display 9 sequentially displays the train positions estimated by the position detectors 8 of the track circuits AT to CT.
When the occurrence of a failure in the track circuit BT is detected in step (5), the cause of the failure and the failure occurrence position estimated by the position detection unit 8 are displayed.

The train position detector 4 constructed as described above
The operation of detecting the position of the train 1 entering the track circuit BT and displaying it on the display unit 9 will be described with reference to the characteristic diagram of FIG.

A transmitter 2 connected to a boundary point of the train advancing end of the track circuit BT transmits an ATC signal to the rail of the track circuit BT to detect a train position and transmit speed information to the train 1. I have. The receiver 3 connected to the boundary point on the train entry side of the track circuit BT is connected to the A flowing through the rail of the track circuit BT.
The TC signal current is detected. On the other hand, the train position detector 4
The current measuring unit 6 measures the ATC transmission current I output from the transmitter 2. The ATC transmission current I detected by the current detection unit 6 has the current value I ₀ in FIG. 3 when the train 1 is not on the track circuit BT.

When the train 1 enters the track circuit BT in this state, the two rails of the track circuit BT are short-circuited at the axle of the train 1, and the ATC signal current is not sent to the receiver 3.
When the receiver 3 detects the absence of the ATC signal current, the receiver 3 sends a train location signal to the position detector 8. When the train location signal is transmitted, the position detection unit 8 compares the ATC transmission current I detected by the current measurement unit 6, the train position stored in the position / current characteristic storage unit 5, and the change characteristic of the ATC transmission current. By comparing, the train position matching the ATC transmission current I detected by the current measuring unit 6 and the position corresponding to the current value of the change characteristic of the ATC transmission current are estimated as the position of the train 1. For example, when the current value of the ATC transmission current I is detected by the current measuring unit 6 is I _1, the train 1 is located P ₁ accustomed only a distance L ₁ from the receiving end P ₀ of the track circuit BT is estimated that the train position , The current value of the ATC transmission current I detected by the current measuring unit 6 is I ₂
, The train 1 is at a distance L ₂ from the receiving end P ₀ of the track circuit BT.
Only the position P ₂ accustomed estimates a train position, when the current value of the ATC transmission current I is detected by the current measuring unit 6 is I _3, the train 1 is the distance L ₃ from the receiving end P ₀ of the track circuit BT only the position P _3, which was accustomed to estimate the train position. Position detector 8
Sends the train location signal and the sequentially estimated position signal of the train 1 to the display 9. When the indicator 9 receives the train location signal from the position detector 8, as shown in the display screen diagram of FIG. 4, the track circuit BT is displayed on the track circuit display 91 showing the train location for each track circuit.
In addition to displaying that the train is on the train, the track circuit is divided into a plurality of tracks at a certain distance, and the position of the train 1 is displayed on the sorting display unit 92 in which the train on-rail display moves as the train 1 moves. . Track circuit display section 91 and section display section 9
By confirming No. 2, it is possible to accurately recognize that the train 1 is on the track circuit BT and the position where the train 1 is running in the track circuit BT.

Next, the operation when a failure occurs in the track circuit BT will be described with reference to the characteristic diagrams of the distance and the ATC transmission current in FIGS.

The fault detecting section 7 of the train position detecting section 4 constantly monitors the ATC transmission current I measured by the current measuring section 6 and the train position stored in the position / current characteristic storing section 5 and the AT position.
It is compared with the change characteristic of the C transmission current. The failure detection unit 7 detects that the ATC transmission current I monitored is
If the current value I ₀ at the receiving end P ₀ of the change characteristic of the ATC transmission current and the train position stored in the position / current characteristic storage unit 5 is not present at T, the track circuit BT fails. It is determined that the occurrence has occurred, and the cause of the failure is specified based on the change state of the measured ATC transmission current I.

That is, if the rail of the track circuit BT is cut off, an electric circuit based on the rail is not formed, and the ATC transmission current I measured by the current measuring unit 6 is as shown in FIG. It becomes "0". When two rails of the track circuit BT are short-circuited, as shown in FIG.
From the current value I ₀ to the current value I _X determined at the fault position P _X. By detecting the change state of the ATC transmission current I, it is possible to distinguish and specify whether the failure of the track circuit BT is due to a rail breakage or a rail short circuit.

The failure detection unit 7 detects that a failure has occurred in the track circuit BT, and when the cause of the failure is specified, sends a failure occurrence signal to the position detection unit 8 and displays the failure occurrence signal, the failure cause, and the failure on the display 9. An ATC transmission current value indicating the cause is sent. The display 9 has a failure occurrence signal, a failure cause, and an ATC indicating the failure cause.
When the transmission current value is sent, as shown in FIG. 7, the occurrence of an abnormality in the track circuit BT, the date and time of the occurrence, the cause of the failure, and the ATC transmission current value are displayed.

On the other hand, when the position detecting section 8 receives the failure occurrence signal, the ATC transmission current I detected by the current measuring section 6 and the train position stored in the position / current characteristic storing section 5 and the ATC
The comparison with the change characteristic of the transmission current is started. ATC transmits current I train 1 until it reaches the failure position P _X enters the track circuit BT is detected by the current measuring section 6 in this state
Is constant without change as shown in FIGS. 5 and 6, but the train 1 enters the track circuit BT and the fault occurrence position P _X
, The ATC transmission current I detected by the current measuring unit 6 changes, and substantially matches the normal ATC transmission current.
The position detecting unit 8 detects the ATC detected by the current measuring unit 6.
Estimating the position P _X when transmission current I is substantially coincident with ATC transmission current during normal changes the failure position indicator 9
Send to Display unit 9 when a failure occurs the estimated position P _X is sent from the position detector 8, the track circuit BT of failure estimated position P _X and displays the appropriate compartments of the sorting display unit 92
Show distance L _X from the receiving end P ₀ of. By confirming this display, it is possible to accurately know that a failure has occurred in the track circuit BT, the cause of the failure, and the location where the failure has occurred.

[0020] The above embodiment has been described for the case of displaying the position of the train 1 in the track circuit BT by partitioning the track circuit BT every predetermined distance, the distance from the receiving end P ₀ of the track circuit BT directly The train 1 may be displayed while the position of the train 1 is sequentially moved.

[0021]

As described above, according to the present invention, when it is detected that a train has entered the track circuit, the ATC transmission current transmitted to the track circuit, the train position measured and stored in advance, and the ATC transmission current are measured. Since the position of the train is estimated by comparing it with the change characteristics of the current and the estimated train position is sequentially displayed, the position of the train can be confirmed accurately and in real time.

When the ATC transmission current transmitted to the track circuit changes according to the train position and the change characteristic of the ATC transmission current measured and stored in advance, it is determined that a failure has occurred in the track circuit, and the transmission is performed. Because the cause of the failure is specified and displayed based on the change in the ATC transmission current,
The cause of the failure can be accurately recognized.

Further, when a failure occurs in the track circuit, when the ATC transmission current transmitted to the track circuit changes due to running of the train, the ATC transmission current at the time of the change and the train position stored in advance. Since the position of the train at that time is specified based on the change characteristics of the ATC transmission current and the fault occurrence position is estimated and displayed, the fault occurrence position can be clearly understood and the fault recovery time is greatly reduced. can do.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a configuration of a train position detection unit.

FIG. 3 is a change characteristic diagram of a train position and an ATC transmission current.

FIG. 4 is a display diagram showing a train position.

FIG. 5 is a change characteristic diagram of a train position and an ATC transmission current when a rail breakage occurs.

FIG. 6 is a diagram showing a change characteristic of a train position and an ATC transmission current when a rail short circuit occurs.

FIG. 7 is a display diagram when a failure occurs.

FIG. 8 is a block diagram showing a configuration of a conventional example.

FIG. 9 is a display explanatory diagram showing a train position in a conventional example.

[Explanation of symbols]

 AT-CT Track circuit 1 Train 2 Transmitter 3 Receiver 4 Train position detecting unit 5 Position / current characteristic storage unit 6 Current measuring unit 7 Failure detecting unit 8 Position detecting unit 9 Display

Claims (1)

[Claims] A transmitter for transmitting an ATC signal to a boundary point of the track circuit on a train exit side; and a receiver for transmitting a ATC signal to the train circuit of the track circuit. The signal from the track circuit is received at the boundary point on the side, and the train position detection unit detects the position of the train on the track circuit and the failure position when a failure occurs in the track circuit, and the position / current characteristics It has a storage unit, a current measurement unit, a failure detection unit, and a position detection unit. The position / current characteristic storage unit transmits from the transmitter to the track circuit in advance according to the position of the train on the track circuit (track short-circuit position). A change in the transmission current of the ATC signal to be transmitted is measured and stored. The current measurement unit detects the transmission current of the ATC signal transmitted from the transmitter to the track circuit. The failure detection unit transmits the ATC signal measured by the current measurement unit. Recorded in the current and position / current characteristics memory When the measured ATC transmission current changes from the stored current value near the train entry end, it is determined that a failure has occurred in the track circuit. The cause of the failure is specified by the change in the ATC transmission current being measured, and the position detection unit detects the ATC transmission current measured by the current measurement unit when the reception unit detects that the train has entered the track circuit. And train position and AT stored in the position / current characteristic storage unit
The ATC transmission current measured by the current measurement unit is used to estimate the train position by estimating the position of the train by comparing the change characteristics of the C transmission current and the failure detection unit. When the change occurs, the current at the time of the change, the train position stored in the position / current characteristic storage unit, and the change characteristic of the ATC transmission current are compared, and the train position at that time is estimated as a failure occurrence position. The display sequentially displays the train position estimated by the position detection unit,
A train position and failure point display device, wherein when a failure detection unit detects a failure of a track circuit, a failure occurrence and a failure occurrence position estimated by the position detection unit are displayed.