JP3466211B2 - Railroad crossing control device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a railroad crossing control device,
The present invention relates to a technology for automatically returning the control function after automatically confirming the safety within the level crossing control section when the level crossing control output is stopped due to an abnormality.

[0002]

2. Description of the Related Art A conventional railroad crossing control device is disclosed in Japanese Patent Application No. 2-34.
As disclosed in No. 1071 etc., train detectors are provided before and after the railroad crossing, the railroad crossing control is started by the train detection signal from the train detector installed in front of the railroad crossing, and the train detector installed in the rear The railroad crossing control is ended by the train detection signal.

[0003]

However, the conventional level crossing control device has the following problems. (A) Since the train detection is so-called point detection, when the control device restarts after stopping the railroad crossing control output due to an abnormality, data is lost and it cannot be confirmed that there is no train in the railroad crossing control section. . For this reason, when restarting the control device, it is essential to manually check the safety within the level crossing control section, and the control device cannot be automatically restored. (B) Due to the speeding up of trains in recent years, the railroad crossing control section has become longer, and it has become difficult to manually check safety inside the railroad crossing control section. (C) Recent crossing control devices have been micro-computerized, and in many cases, the crossing control output is automatically stopped due to data change due to lightning damage, computer runaway, etc., and there is a growing demand for automatic restoration of the control device. There is.

Therefore, an object of the present invention is to solve the above-mentioned problems and to provide a railroad crossing control device capable of automatically returning after automatically confirming the safety in the railroad crossing control section.

[0005]

In order to solve the above-mentioned problems, the present invention is a railroad crossing control device having a mobile body detection device and a control device, wherein the mobile body detection device is within a railroad crossing control section. Is to detect the presence or absence of a moving body in, to output a moving body detection signal, the control device, the moving body detection signal is input, after stopping the level crossing control output due to an abnormality, the moving body detection The level crossing control output can be generated only when the signal is "nothing" in the moving body.

[0006]

Since the moving body detection device detects the presence or absence of a moving body in the level crossing control section and outputs a moving body detection signal,
Regardless of the operating state of the control device, the presence / absence of a moving body in the level crossing control section can be output as a moving body detection signal, and the control device can immediately determine the presence / absence of a moving body from the moving body detection signal when restarting.

The control device receives the moving body detection signal,
After the railroad crossing control output is stopped due to an abnormality, the railroad crossing control output can be generated only when the mobile body detection signal is the mobile body "absent". Therefore, there is no mobile body in the railroad crossing control section. That is, the railroad crossing control output is generated only when the safety in the railroad crossing control section is automatically confirmed. Therefore, when the moving body is “present” within the level crossing control section, the stopped state is maintained and the level crossing control output is not generated.

[0008]

1 is a block diagram showing the construction of a first embodiment of a railroad crossing control apparatus according to the present invention. In the figure, 1 is a moving body detection device, 2 is a control device, 3 is a railroad crossing, 4 is a circuit breaker, 5 is a railroad crossing alarm, and 61 and 62 are mobile bodies. The moving body 61 moves the down line in the a direction, and the moving body 62 moves the up line in the b direction. For simplification of description, the description will be limited to the downlink.

The moving body detecting device 1 detects the presence or absence of the moving body 61 in the level crossing control section L1, and detects the moving body detection signal S.
1 is output. 111 and 112 are moving body detectors.
The moving body detector 111 detects that the moving body 61 has entered the level crossing control section L1. The moving body detector 112 detects that the moving body 61 has advanced from the level crossing control section L1.
The moving body detection signal S1 is from when the moving body detector 111 detects the entry until when the moving body detector 112 detects the entry.
The moving body is “present”, and otherwise the moving body is “none”. The moving body detection signal S1 is supplied to the control device 2.
The detection signals of the moving body detectors 111 and 112 are supplied to the control device 2 as the level crossing control information S2.

Based on the level crossing control information S2, the control device 2 outputs a level crossing control output S3 for controlling the level crossing breaker 4 and the level crossing alarm device 5, and an abnormality such as a power interruption or a data change due to lightning damage occurs. If so, the output of the level crossing control output S3 is stopped. When the railroad crossing control output S3 is stopped, the railroad crossing breaker 4 is closed and the railroad crossing alarm device 5 sounds to provide a fail-safe output. After the moving body detection signal S1 is input and the crossing control output S3 is stopped due to an abnormality, the control device 2 can generate the leveling control output S3 only when the moving body detection signal S1 is “absent”. .

FIG. 2 is a time chart for explaining the operation of the first embodiment shown in FIG. In the figure, reference numeral (a) indicates the operating state of the control device 2, and reference numeral (b)
Indicates the state of the moving body detection signal S1. Figure is Figure 1
At this point, the moving body 61 enters the crossing control section L1,
It shows a case where the control device 2 stops the output of the level crossing control output S3 before the vehicle crosses the level crossing control section L1. Less than,
FIG. 2 will be described together with its operation with reference to FIG.

As described above, the moving body detecting device 1 detects the presence or absence of the moving body 61 in the level crossing control section L1,
Since the moving body detection signal S1 is output, the moving body 6 in the level crossing control section L1 is irrespective of the operating state of the control device 2.
The presence / absence of 1 can be output as the moving body detection signal S1. For example, at time t1, the moving body 61 moves to the level crossing control section L1.
When the vehicle enters, the moving body detection signal S1 changes from “not present” to “present”. The control device 2 controls the level crossing control information S2.
Based on the above, the railroad crossing breaker 4 is closed and a railroad crossing control output S3 for ringing the railroad crossing alarm device 5 is output. At time t2, the control device 2 stops the level crossing control output S3 due to an abnormality. Since the railroad crossing control output S3 is a fail-safe output, the railroad crossing breaker 4 maintains the closed state and the railroad crossing alarm device 5 maintains the ringing state. The level crossing control information S2 supplied to the control device 2 disappears. Since the moving body detection device 1 operates separately from the control device 1, at time t3,
When the moving body 61 advances in the level crossing control section L1, the moving body detection signal S1 of the moving body "absent" is output.

The control device 2 receives the moving body detection signal S1 and stops the leveling control output S3 due to an abnormality, and then outputs the leveling control output S3 only when the moving body detection signal S1 is "absent". Since this may occur, the railroad crossing control section L
The crossing control output S3 is generated only when the moving body 61 does not exist in the vehicle No. 1, that is, when the safety in the crossing control section L1 is automatically confirmed. Therefore, the level crossing control section L1
When the moving body is “with”, the stop state is maintained and the level crossing control output S3 is not generated. For example, time t4
When the control device 2 is restarted at
Since the level crossing control information S2 has disappeared, the level crossing control information S
Although it cannot be determined that the moving body 61 does not exist in the level crossing control section L1 based on 2, the moving body detection signal S1 of the moving body “absent” is supplied from the moving body detection device 1 operating independently, It can be immediately determined that the moving body 61 is not in the railroad crossing control section L1. Therefore, the control device 2 automatically returns, takes in the level crossing control information S2, opens the level crossing breaker 4 based on the level crossing control information S2, and stops ringing of the level crossing alarm device 5. Normal railroad crossing control is performed for the following moving body. When the abnormality of the control device 2 is not healed, the level crossing control output S3 is stopped again and the fail safe output is provided, so that the level crossing breaker 4 maintains the closed state and the level crossing alarm 5 maintains the ringing state. . When the moving body detection signal S1 indicating the presence of the moving body is supplied within the level crossing control section L1, the level crossing control output S3 is not generated.

The automatic return is performed by stopping the crossing control output S3 and then delaying it for a certain time, or by using the moving body detection signal S1 that changes from the moving body "present" to the moving body "absent". .

Further, in the first embodiment shown in FIG. 1, the control device 2 has a self-diagnosis function of automatically stopping the level crossing control output S3 when an abnormality in its control state is determined. Therefore, if the control state becomes abnormal due to the damage of data etc. due to noise such as lightning damage, the level crossing control output S
Although 3 is automatically stopped, the level crossing control function can be recovered by automatic recovery as long as it is an error that can be recovered. If it is an unrecoverable abnormality, automatic stop is repeated.

Further, in the first embodiment shown in FIG. 1, the track structure is double track. FIG. 3 is a time chart for explaining the operation of the moving body detection device with double lines shown in FIG. FIG. 3 will be described with reference to FIG. The moving body detection device 1 has a detection unit 11 and a logic unit 12.
The detection unit 11 has moving body detectors 111 to 114. The moving body detectors 111 and 112 are provided at the entrance and the exit of the crossing control section L1 of the down line, and detect the entry and the exit of the moving body 61 and output the moving body detection signals S11 and S12. The moving body detectors 113 and 114 are provided in the crossing control section L2 of the up line, and detect the entry and the exit of the moving body 62, and output moving body detection signals S13 and S14. The logic unit 12 determines the presence or absence of the moving bodies 61 and 62 in the level crossing control sections L1 and L2 based on the number of times of entry and exit based on the moving body detection signals S11 to S14, and the moving body “present” or the moving body “absent”. And outputs the moving body detection signal S1.

At time t11, the moving body detector 111
Detects the entry of the moving body 61. Moving object detection signal S1
Changes from the mobile body “absent” to the mobile body “present”. Time t
At 12, the moving body detector 111 finishes detecting the moving body 61. At time t13, the moving body detection 113 detects the entry of the moving body 62. The moving body detection signal S1 is
Keep the mobile "Yes". At time t14, the moving body detector 113 finishes detecting the moving body 62. Time t1
5, the moving body detector 112 detects the advance of the moving body 61. At time t16, the moving body detector 112 ends detecting the moving body 61. At this time, the number of times of approach and advance in the down line are the same, but the number of approach and advance in the up line are not the same, so the moving body detection signal S
1 keeps the moving body “present”. At time t17, the moving body detector 114 detects the advance of the moving body 62. At time t18, the moving body detector 114 finishes detecting the moving body 62. At this time, since the number of times of entry and departure on the up line is the same, the moving body detection signal S1 changes from the moving body “present” to the moving body “absent”.

FIG. 4 is a block diagram showing the configuration of a second embodiment of the railroad crossing control device according to the present invention. In the figure, the same reference numerals as those in FIG. 1 denote the same components.

The control unit 2 controls the railroad crossing control section L1, L2 after the mobile bodies 61, 62 enter the railroad crossing control section L1, L2.
The normal signal S4 is output when the control is normally performed until it goes out of L2.

The moving body detecting device 1 has a detecting section 11 and a logic section 12. The detection unit 11 is a moving body detector 1
It has 11, 112, 113, 114. The moving body detectors 111 and 112 are provided at the entrance and the exit of the railroad crossing control section L1, detect the entry and the exit of the moving body 61, and output moving body detection signals S11 and S12. Moving object detector 1
Reference numerals 13 and 114 are provided at the entrance and the exit of the level crossing control section L2, and detect the entry and the exit of the moving body 62 and output moving body detection signals S13 and S14. The logic unit 12 receives the normal signal S4 and receives the moving body detection signals S11, S12, S.
When the number of times of approach and advance based on 13 and S14 is equal and there is a normal signal S4, the moving body detection signal S1 of the moving body "absent" is output. The moving body detection signal S1 is the same as that in FIG. Therefore, when the moving body detection signal S1 changes from the moving body “present” to the moving body “absent”, the moving body detection based on the moving body detection signals S11, S12, S13, and S14 is normal, and the control device It is limited to the case where 2 is the normal leveling control. That is, when the control device 2 detects an abnormality during the level crossing control, the moving body detection signal S1 of the moving body “none” is detected.
Is not output and the control device 2 cannot automatically recover. Also,
When the control device 2 detects an abnormality other than during the level crossing control,
When restarting, the moving bodies 61, 6 are placed in the level crossing control sections L1, L2.
Automatically returns only if 2 does not exist. This allows
Fail-safety is secured. The logic unit 12 can be configured by a logic circuit using a logic gate or software of a microcomputer.

FIG. 5 is a circuit diagram in the case where the logic unit according to the second embodiment shown in FIG. 4 is formed by a relay sequence.
In the figure, 15 is a memory relay, 16 is a normal relay, R
11 to R17 are relay contacts. Relay contact R11
Is a drop contact that becomes non-conductive when the moving body detector 111 detects the entry of the moving body 61. Relay contact R
Reference numeral 12 denotes an energizing contact which becomes non-conductive when the moving body detector 112 detects the advance of the moving body 61. The relay contact R13 is a drop contact that becomes non-conductive when the moving body detector 113 detects the entry of the moving body 62. The relay contact R14 is a rising contact that becomes non-conductive when the moving body detector 114 detects the advance. The drop contact is
The contact is a conductive state when the relay is energized and a non-conductive state when the relay is not energized. The enlarging contact is a contact that is in a non-conducting state when the relay is energized and is in a conducting state when the relay is not energized. In the check-in / check-out method, if the check-in side is the drop contact and the check-out side is the lift-up contact, it means that there is a moving object in the railroad crossing control section when the relay is de-energized due to a failure. And fail-safe property is obtained. The relay contact R15 is a drop contact that conducts when the storage relay 15 is energized. The relay contact R16 is a contact of the normal relay 16 that is energized when the control device 2 outputs the normal signal S4, and becomes conductive when the normal signal S4 is output. Relay contact R
11 to R15 are connected in series to the storage relay 15 and connected between the power supplies B24 and C24. Relay contact R1
Reference numeral 5 constitutes a self-holding circuit of the storage relay 15.
The relay contact R16 is connected in parallel to the series circuit of the relay contacts R11 to R15. The relay contact R17 is a contact that conducts when the storage relay 15 is energized, and serves as a moving body detection signal S1 whose conducting state is "absent" and non-conducting state is "moving body".

FIG. 6 is a timing chart for explaining the operation of the logic section shown in FIG. In the figure, the same reference numerals as those in FIGS. 3 and 5 denote the same components. FIG. 6 will be described with reference to FIGS. 4 and 5.

At time t11, the moving body detector 111
Detects the entry of the moving body 61, and the relay contact R11 becomes non-conductive. At this time, since the storage relay 15 is in the non-conducting state, the relay contact R17 is in the non-conducting state, and the moving body detection signal S1 changes to “present”. Control device 2
Outputs the railroad crossing control output S3 that closes the railroad crossing breaker 4 and sounds the railroad crossing alarm device 5. At time t12,
The moving body detector 111 ends the detection of the moving body 61. The relay contact R12 becomes conductive. At time t13, the moving body detection 113 detects the entry of the moving body 62, and the relay contact R13 becomes non-conductive. Moving object detection signal S
1 keeps the moving body “present”. At time t14,
The moving body detector 113 ends the detection of the moving body 62. The relay contact R13 becomes conductive. At time t15, the moving body detector 112 detects the advance of the moving body 61,
The relay contact R12 becomes non-conductive. At time t16, the moving body detector 112 ends detecting the moving body 61. The relay contact R12 becomes conductive. At this time, the number of approaches and exits on the down line is the same, but the number of approaches and exits on the up line are not the same.
The contact R16 maintains the non-conduction state, and the moving body detection signal S1
Keeps the mobile "Yes". At time t17, the moving body detector 114 detects the advance of the moving body 62, and the relay contact R14 becomes non-conductive. At time t18, the moving body detector 114 finishes detecting the moving body 62. The relay contact R14 becomes conductive. At this time, the number of times of entry and exit on the up line is the same. At time t19, the control device 2 opens the level crossing breaker 4 and outputs the level crossing control output S3 for stopping the ringing of the level crossing alarm device 5 and the normal signal S4. At time t20,
The relay contact R16 becomes conductive, and the memory relay 15 is operated. At this time, since the relay contacts R11 to R14 are conducting, the storage relay 15 is self-held via the relay contact R15. Therefore, the relay contact R17 becomes conductive, and the moving body detection signal S1 changes from the moving body “present” to the moving body “absent”. Therefore, when the control device 2 detects an abnormality during the level crossing control, the normal signal S4 is not output,
Since the moving body detection signal S1 does not change from the moving body “present” to the moving body “absent”, the control device 2 cannot automatically return. Further, even when the control device 2 detects an abnormality other than during the level crossing control, if the control device 2 detects the entry of the moving body before the automatic recovery, the relay contact R11 or the relay contact R1.
Since 3 becomes a non-conducting state and the self-holding of the storage relay 15 is released, the control device 2 cannot automatically return. If the moving body does not enter before the automatic return, the self-holding of the storage relay 15 is not released, and the control device 2 can automatically return. With this, the control device 2 automatically returns only after the vehicle has been normally controlled to cross the railroad crossing and does not enter the railroad crossing control section, so that the fail-safe property is ensured.

FIG. 7 is a block diagram showing the configuration of a third embodiment of the railroad crossing control device according to the present invention. In the figure, the same reference numerals as those in FIG. 1 denote the same components.
611 and 621 are on-board antennas.

The moving body detection device 1 has a detection section 11 and a logic section 12. The detection unit 11 includes the loop coil 1
It has 15, 116. The loop coil 115 receives the on-vehicle information transmitted from the on-vehicle antenna 611, continuously detects the presence of the moving body 61 in the level crossing control section L1, and outputs the moving body detection signal S15. Similarly,
The loop coil 1116 receives the on-vehicle information transmitted from the on-vehicle antenna 621, continuously detects the presence of the moving body 62 in the level crossing control section L2, and outputs the moving body detection signal S16. The logic unit 12 uses the moving body detection signal S1.
5 and S16, the presence or absence of the moving bodies 61 and 62 in the level crossing control sections L1 and L2 is determined, and the moving body detection signal S1 is detected.
Is output.

FIG. 8 is a time chart for explaining the operation of the third embodiment shown in FIG. In the figure, the same reference numerals as those in FIG. 2 denote the same components. S15,
S16 is a moving body detection signal. Hereinafter, FIG. 8 will be described with reference to FIG. 7.

At time t1, when the moving body 61 enters the level crossing control section L1, the moving body detection signal S15 changes from the moving body "absent" to the moving body "present", and the moving body detection signal S1 also changes from the moving body "absent". The moving body becomes "Yes". The control device 2 is
Based on the railroad crossing control information S2, the railroad crossing barrier 4 is closed,
A crossing control output S3 that causes the crossing alarm device 5 to sound is output. At time t2, the moving body 62 moves to the level crossing control section L2.
When the vehicle enters, the moving body detection signal S16 changes from “not present” to “present”. The moving body detection signal S1 maintains the moving body “absent”. The control device 2 closes the railroad crossing breaker 4 and maintains the railroad crossing control output S3 that causes the railroad crossing alarm device 5 to ring. At time t3, the control device 2 stops the level crossing control output S3 due to an abnormality. Since the railroad crossing control output S3 is a fail-safe output, the railroad crossing breaker 4 maintains the closed state and the railroad crossing alarm device 5 maintains the ringing state. The level crossing control information S2 supplied to the control device 2 disappears. At time t4, when the moving body 61 moves out of the level crossing control section L1, the moving body detection signal S15 changes from the moving body “present” to the moving body “absent”. At time t5, when the moving body 62 advances in the level crossing control section L2, the moving body detection signal S16 changes from the moving body “present” to the moving body “absent”. Mobile object detection device 1
Outputs a moving body detection signal S1 indicating that the moving body is "absent" because it operates separately from the control device 2. At time t6, when the control device 2 is restarted, the control device 2 detects that the moving body detection device 1 operating independently has no moving body.
The moving body detection signal S1 is supplied, and it can be immediately determined that there are no moving bodies 61 and 62 in the level crossing control sections L1 and L2. Therefore, the control device 2 automatically returns, takes in the level crossing control information S2, opens the level crossing breaker 4 based on the level crossing control information S2, and stops ringing of the level crossing alarm device 5.

If it is possible to confirm that there is a moving body in the level crossing control section, the control unit 2 can directly input the moving body detection signals S15 and S16.

[0029]

As described above, according to the present invention, the following effects can be obtained. (A) Since the moving body detection device detects the presence or absence of a moving body in the railroad crossing control section and outputs a moving body detection signal, the presence or absence of a moving body in the railroad crossing control section is detected regardless of the operating state of the control device. The control device can provide a railroad crossing control device that can output as a moving body detection signal and can immediately determine the presence or absence of a moving body from the moving body detection signal when restarting. (B) The control device can generate a level crossing control output only when the moving body detection signal is “absent” after the moving body detection signal is input and the leveling control output is stopped due to an abnormality. Therefore, it is possible to provide a railroad crossing control device capable of automatically returning after automatically confirming the safety in the railroad crossing control section.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a first embodiment of a railroad crossing control device according to the present invention.

FIG. 2 is a time chart explaining the operation of the first embodiment shown in FIG.

FIG. 3 is a time chart for explaining the operation of the moving object detection device having double tracks shown in FIG.

FIG. 4 is a block diagram showing a configuration of a second embodiment of a railroad crossing control device according to the present invention.

FIG. 5 is a circuit diagram in the case where the logic unit according to the second embodiment shown in FIG. 4 is configured with a relay sequence.

6 is a timing chart illustrating the operation of the logic unit shown in FIG.

FIG. 7 is a block diagram showing a configuration of a third embodiment of a railroad crossing control device according to the present invention.

FIG. 8 is a time chart explaining the operation of the third embodiment shown in FIG.

[Explanation of symbols]

1 Moving object detection device 11 Detector 12 Logic 2 controller 3 level crossings 4 Railroad crossing gate 5 crossing alarm 61, 62 mobile L1, L2 crossing control section S1 Moving object detection signal S2 control information S3 control output S4 Normal signal

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Claims (2)

(57) [Claims] 1. A railroad crossing control device having a mobile body detection device and a control device, wherein the mobile body detection device detects the presence or absence of a mobile body in a railroad crossing control section, and outputs a mobile body detection signal. The control device receives the moving body detection signal, and after stopping the leveling control output due to an abnormality, only when the moving body detection signal is the moving body “absent”, the leveling control output is provided. are those which may occur, the control device further, the movable body is the crossing control section
From the inside to the outside of the railroad crossing control section,
It outputs a normal signal when it is controlled normally.
The mobile object detection device has a detection unit and a logic unit.
The detection unit is provided at the entrance and exit of the railroad crossing control section,
The moving body detection signal is detected by the point detection of the approach and advance of the moving body.
And the logic unit receives the normal signal,
The number of ingress and egress based on the moving body detection signal is equal,
And when there is the above-mentioned normal signal, in front of the moving body "none"
A railroad crossing control device that outputs a moving body detection signal . 2. The railroad crossing control device according to claim 1, wherein the control device has a self-diagnosis function of automatically stopping the railroad crossing control output when it is determined that the self control state is abnormal.