JPH09132145A - Railroad crossing controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To output a suitable railroad crossing control signal even if a vehicle detecting signal of a track circuit is delayed and the operational, sequence is broken. SOLUTION: A controller 2 makes control modes M1 to M5 sequentially transited according to the operational sequence of a first vehicle detecting signal S1 from a track circuit 1T and a second vehicle detecting signal S4 from a vehicle detector 111, judges the presence or absence of a vehicle 6 in a vehicle detecting zone Z1, and outputs a railroad crossing control signal S6 on the basis of the presence or absence of the vehicle 6. When the second vehicle detecting signal S4 which has detected the presence of the vehicle is supplied earlier than the first vehicle detecting signal S1 which has detected the presence of the vehicle, the delay processing mode M7 in which the vehicle is present for the set first time T1 is set, made transited to the following control mode M3 when the first vehicle detecting signal S1 which has detected the presence of the vehicle is obtained in the first time T1, or forcibly made transited to the first control mode M1 when the signal is not obtained.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a railroad crossing control device.

[0002]

2. Description of the Related Art A conventional railroad crossing control device sets a railroad crossing control section to issue a railroad crossing warning, outputs a railroad crossing control signal when a vehicle enters the railroad crossing control section, and exits the railroad crossing control section. Stop the level crossing control signal. The railroad crossing control section has a start point as an alarm start point and an end point as an alarm end point, and has railroad crossing controllers at the alarm start point and the alarm end point. The railroad crossing controller sets a short control section near the alarm start point and the alarm end point, and outputs the presence or absence of a vehicle in the control section as a vehicle detection signal. The railroad crossing control device uses the vehicle "Yes" from the railroad crossing controller installed at the alarm start point.
When the vehicle detection signal is input, the state of the vehicle “present” is stored in the level crossing control section, and when the vehicle detection signal of the vehicle “absence” is input from the level crossing controller provided at the alarm end point. , Cancel the state memory of "existence" of the vehicle in the level crossing control section.
The level crossing controller provided at the warning start point is "low" when the vehicle "exists" is detected in order to obtain fail-safety.
It outputs the vehicle detection signal that becomes the level. The level crossing controller provided at the alarm end point outputs a vehicle detection signal that becomes a "high" level when the vehicle "exists" is detected in order to obtain fail-safety.

The level crossing control section includes a plurality of sections. Each section is composed of a track circuit and detects the presence / absence of a vehicle in its section and outputs a vehicle detection signal. The railroad crossing control device, a vehicle detection signal in the section where the railroad crossing controller is provided,
By the operation sequence with the vehicle detection signal of the crossing controller,
It is detected that the railroad crossing controller has illegally output a vehicle detection signal. If the vehicle detection signal of the section changes from the vehicle “absent” to “present” when the vehicle detection signal of the railroad crossing controller changes from the vehicle “absent” to the vehicle “present”, the level crossing controller When the vehicle detection signal of changes from "Present" to "No" of the vehicle, when the vehicle detection signal of the section changes from "Present" to "No" of the vehicle in sequence, the crossing controller is It is determined that the vehicle detection signal is normally output, and if the vehicle detection signals are not sequentially obtained, it is determined that the level crossing controller has illegally output the vehicle detection signal. When the railroad crossing controller determines that the railroad crossing controller has illegally output the vehicle detection signal, the railroad crossing control device stores the state of the vehicle “present” in the railroad crossing control section and continuously outputs the railroad crossing control signal.

In the field of vehicle control of trains and the like, the vehicle detection signal of each section (track circuit) is also used in the interlocking device and may be supplied to the railroad crossing control device via the interlocking device. In such a case, in the worst case, the vehicle detection signal may be supplied to the railroad crossing control device with a delay of about 4 seconds. Therefore, when the railroad crossing controller is set near the boundary of the track circuit, etc., the vehicle detection signal of the vehicle "present" supplied from the railroad crossing controller and the vehicle "present" supplied from the section are detected. Since the vehicle detection signal is reversed, the railroad crossing control device determines that the railroad crossing controller has illegally output the vehicle detection signal.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a railroad crossing control device which outputs an appropriate railroad crossing control signal even if the vehicle detection signal of the track circuit is delayed and the operation sequence is broken. .

[0006]

In order to solve the above problems, a railroad crossing control device according to the present invention includes a railroad crossing control section and a control device. The railroad crossing control section includes a plurality of sections having a track circuit, at least one of the rearmost section and the frontmost section seen in the traveling direction includes a vehicle detector, and the boundary of the track circuit and the vehicle detector. And a vehicle detection zone between them, each of the track circuits detects the presence or absence of a vehicle in its section, outputs a first vehicle detection signal, and the vehicle detector passes above itself. The vehicle is detected and a second vehicle detection signal is output. The control device has a plurality of control modes to which the first vehicle detection signal and the second vehicle detection signal are input, and which makes one round according to the operation sequence, and sequentially transitions the control modes in accordance with the operation sequence. The presence / absence of the vehicle in the vehicle detection zone is determined, and a level crossing control signal is output according to the presence / absence of the vehicle. The control device is a vehicle "present"
When the second vehicle detection signal of the vehicle “present” is supplied prior to the first vehicle detection signal of, the delay processing mode in which the vehicle is “present” within the predetermined first time is set. When the first vehicle detection signal indicating that the vehicle is “present” is obtained within the first time, the control mode is changed to the subsequent control mode, and the vehicle is “present” within the first time. When the first vehicle detection signal is not obtained, the control mode is forcedly transited to the first control mode.

As described above, the railroad crossing control section includes a plurality of sections having a track circuit, and at least one of the rearmost section and the frontmost section seen in the traveling direction includes the vehicle detector, and A vehicle detection zone is formed between the boundary and the vehicle detector. Each of the track circuits detects the presence / absence of a vehicle in its section and outputs a first vehicle detection signal. The vehicle detector detects a vehicle passing over itself and outputs a second vehicle detection signal. Therefore, when the vehicle detector is provided in the rearmost section, the vehicle enters the section and the first vehicle signal of the vehicle “present” is obtained, and then the vehicle detector presents the vehicle “present”. If the second vehicle detection signals are obtained, the control device can determine that the vehicle is “present” in the vehicle detection zone based on these vehicle detection signals. When the vehicle detector is installed in the frontmost section,
When the vehicle enters the section, a first vehicle signal indicating that the vehicle is “present” is obtained, a second vehicle detection signal indicating that the vehicle is “present” is obtained from the vehicle detector, and then a vehicle is detected from the vehicle detector. When the second vehicle detection signals of "absent" are obtained, the control device can make the vehicle "absent" in the vehicle detection zone based on these vehicle detection signals.

In the field of vehicle control, vehicle detection signals of track circuits are becoming more reliable. Therefore, the vehicle "exists"
If the second vehicle detection signal of the vehicle “present” is obtained after the first vehicle signal of is obtained, the first vehicle signal guarantees that the vehicle is present in the section, and Since the vehicle detector detects the vehicle, the reliability of the vehicle detection signal of the vehicle detector can be substantially increased.

The control device controls the first vehicle detection signal and the second vehicle detection signal.
The vehicle detection signal is input, and it has a plurality of control modes that make a round according to the operation sequence. The control modes are sequentially transitioned according to the operation sequence, and the presence or absence of a vehicle in the vehicle detection zone is determined. And outputs a level crossing control signal. A plurality of control modes that make a round are, for example,
The first control mode is when the first vehicle detection signal is the vehicle “absent” and the second vehicle detection signal is the vehicle “absent”, and the first vehicle detection signal is the vehicle “present” and the second The second control mode when the vehicle detection signal of the vehicle is “absent”, and the third control when the first vehicle detection signal is the vehicle “present” and the second vehicle detection signal is the vehicle “present” Mode, the first vehicle detection signal is vehicle "present", and the second vehicle detection signal is vehicle "absent"
Is the fourth control mode, the first vehicle detection signal is the vehicle "absent", and the second vehicle detection signal is the vehicle "absent" is the fifth control mode, and the fifth control mode is It is configured to return to the first control mode when it continues for a predetermined time.

According to this configuration, when the first vehicle detection signal of the vehicle "present" is obtained and then the second vehicle detection signal of the vehicle "present" is obtained, the first control mode From the third control mode to the first vehicle detection signal and the second vehicle detection signal.
It is determined that the vehicle detection signal of 1 is normally obtained, and the vehicle “existence” is determined in the vehicle detection zone, and the level crossing control signal corresponding to the vehicle detection zone is output. After that, the second vehicle "nothing"
When the first vehicle detection signal of the vehicle “absent” is obtained next, the vehicle transitions from the third control mode to the fifth control mode, and the first vehicle detection is performed. It is determined that the signal and the second vehicle detection signal are normally obtained, and it is determined that the vehicle is "none" in the vehicle detection zone, and the level crossing control signal corresponding to the vehicle detection zone is stopped.

When the second vehicle detection signal of the vehicle "present" is supplied before the first vehicle detection signal of the vehicle "present", the control device controls the vehicle within the predetermined first time. Since the delay processing mode of "present" is set and the first vehicle detection signal of the vehicle "present" is obtained within the first time, the control mode is changed to the subsequent control mode. Is delayed and the operation sequence is broken, if the first vehicle detection signal of the vehicle “present” is obtained within the first time,
The control mode transitions from the delay processing mode to the third control mode, and processing can be performed in the normal control mode. Therefore, even if the vehicle detection signal of the track circuit is delayed and the operation sequence is broken, an appropriate level crossing control signal can be output.

Other features of the present invention and the effects thereof will be described in more detail with reference to the accompanying drawings.

[0013]

FIG. 1 is a block diagram showing the structure of a railroad crossing control device according to the present invention. The railroad crossing control device according to the present invention includes a railroad crossing control section 1 and a control device 2. In the figure, reference numeral 3 is a railroad crossing, 4 is a railroad crossing alarm, 5 is a railroad crossing breaker, 6 is a vehicle, and X is a traveling direction of the vehicle.

The crossing control section 1 includes a plurality of sections 1T to 3T each having a track circuit. The structure of the track circuit is described in detail on pages 8 to 21 of "Introduction to Electricity for Railway Engineers", Signal Series No. 9, "Track Circuit" (published by Japan Railway Electrical Engineering Association). The rearmost section 1 in the traveling direction X
At least one of T and the frontmost section 3T includes the vehicle detector 111 or the vehicle detector 112. Example is section 1
T includes a vehicle detector 111, and section 3T includes a vehicle detector 112. The vehicle detectors 111 and 112 can be constituted by point detector type vehicle detectors such as a level crossing controller and an axle detector. In the embodiment, the vehicle detector 111 is a closed-circuit type crossing controller, and the vehicle detector 112 is an open-circuit type crossing controller. Railroad crossing controller is an electrical overview for railway engineers, signal series
No. 8, "railroad crossing security device" (published by Japan Railway Electrical Engineering Association), page 35 to page 47.

The crossing control section 1 is a boundary P11 of the section 1T.
The vehicle detection zone Z1 is formed between the vehicle detection element 111 and the vehicle detection element 111, and the vehicle detection zone Z2 is formed between the boundary P31 of the section 3T and the vehicle detection element 112. Orbital relay 1 that constitutes the orbital circuit
Each of TR to 3TR has the first vehicle detection signals S1 to S1 depending on the presence or absence of the vehicle 6 in its section 1T to 3T.
Output S3. Each of the vehicle detectors 111 and 112 detects the vehicle 6 passing above it and outputs the second vehicle detection signals S4 and S5.

The control device 2 receives the first vehicle detection signal S1 and the second vehicle detection signal S4, or the first vehicle detection signal S3 and the second vehicle detection signal S5, and completes one cycle according to the operation sequence. Multiple control modes M1 to M5
And control modes M1 to M5 according to the operation sequence.
Are sequentially transited to determine the presence / absence of the vehicle 6 in the vehicle detection zones Z1 and Z2, and the level crossing control signal S6 is output according to the presence / absence of the vehicle.

The control device 2 receives the second vehicle detection signal S4 indicating the presence of the vehicle before the first vehicle detection signal S1 indicating the presence of the vehicle. The delay processing mode M7 is set so that the vehicle is "present" in T1.
When the first vehicle detection signal S1 of the vehicle "existing" is obtained within the time T1 of, the control mode is changed to the subsequent control mode, and the first vehicle detection signal of the vehicle "existing" within the first time T1. When S1 is not obtained, the first control mode M1 is forcibly changed.

FIG. 2 is a diagram showing an example of transition of control modes set in the control device. In the figure, the same reference numerals as those in FIG. 1 indicate the same components. Figure 1
The case where the processing of the vehicle detection zone Z1 shown in FIG.

The plurality of control modes that make a round are, for example, the first control mode M when the first vehicle detection signal S1 is vehicle "absent" and the second vehicle detection signal S4 is vehicle "absent".
1, the first vehicle detection signal S1 is “present”, and the second
In the second control mode M2 when the vehicle detection signal S4 is “absent” and when the first vehicle detection signal S1 is the vehicle “present” and the second vehicle detection signal S4 is the vehicle “present” Third
Control mode M3, the first vehicle detection signal S1 is the vehicle "present", and the second vehicle detection signal is the vehicle "absent", the fourth control mode M4, the first vehicle detection signal S1 is the vehicle. "None" and the second vehicle detection signal S4 is "None"
In this case, the fifth control mode M5 is set, and when the fifth control mode M5 continues for a predetermined time T4, the first control mode M1 is returned to.

When the control modes are the first control mode M1 and the second control mode M2, the vehicle is "absent" in the vehicle detection zone Z1, and the third control mode M3 to the fifth control mode M5. Indicates that the vehicle is “present” in the vehicle detection zone Z1.

The condition display for the control mode transition is as follows:
There is no change in the state inside the parentheses, and a transition occurs when the state outside the parentheses changes. Symbol S
1 ↓ means the first vehicle detection signal of the vehicle “present”, and the symbol S1 ↑ means the first vehicle detection signal of the vehicle “absent”.
The symbol S4 ↓ means the second vehicle detection signal of the vehicle “present”, and the symbol S4 ↑ means the second vehicle detection signal of the vehicle “absent”. For example, when the control mode M1 is transited to the control mode M2, the second vehicle detection signal S4 indicates that the vehicle is “none”.
The condition is that the first vehicle detection signal S1 changes to “exist” ({(S1 ↓)}) in the state of {(S4 ↑)}.

BU without overline indicates that the control unit has detected an abnormality and is in the backup state,
BU with overline indicates that the control unit is not in the backup state. The symbol ∧ indicates "Katsu". When transitioning from the control mode 1 to the delay processing mode 7, the second vehicle detection signal S4 changes to the vehicle “present” while the first vehicle detection signal S1 is the vehicle “present”, and the control device 2 Is not in the backup state.

In the second control mode M2, the fifth control mode M5, etc., the portion protruding from the circle indicates a timer. For example, the timer in the second control mode M2 indicates T3sec.

FIG. 3 is a time chart showing the operation when the control mode makes one cycle. In the figures, FIG. 1 and FIG.
The same reference numerals as those shown above indicate identical components.

At time t1, the vehicle 6 is located in the section 0T, the first vehicle detection signal S1 becomes the vehicle "absence", and the second vehicle detection signal S4 becomes the vehicle "absence". The control mode is the first control mode M1, and the vehicle detection state in the vehicle detection zone Z1 is "none".

At time t2, the vehicle 6 enters the section 1T, the first vehicle detection signal S1 changes to "present", and
The control mode transits to the second control mode 2. The control device 2 starts counting the time T3. At time T3, vehicle 6
Is for preventing erroneous detection of the vehicle due to chattering of the first vehicle detection signal S1 when entering the section 1T, and is set to, for example, 4 seconds.

At time t3, time T3 elapses.
When the first vehicle detection signal S1 becomes "absent" in the time T3, the vehicle transits to the first control mode M1.

At time t4, the vehicle 6 starts the alarm start point P.
Enter 1 The second vehicle detection signal S4 changes to "existence" of the vehicle, and the control mode changes to the third control mode M3. Therefore, the vehicle detection state in the vehicle detection zone Z1 is "present". The control device 2 outputs the level crossing control signal S6. The level crossing alarm 4 sounds and the level crossing breaker 5 descends.

In the field of vehicle control, the vehicle detection signal S1 of the track circuit is highly reliable. Therefore, when the second vehicle detection signal S4 of the vehicle "present" is obtained after the first vehicle detection signal S1 of the vehicle "present" is obtained, the section 1T is detected by the first vehicle detection signal S1. It is assured that the vehicle exists in the vehicle, and the vehicle detector 111 has detected the vehicle 6, so that the reliability of the second vehicle detection signal S4 of the vehicle detector 111 can be substantially increased. .

At time t5, the vehicle 6 starts the alarm start point P.
1, the second vehicle detection signal S4 changes to vehicle “none”, and the control mode changes to the fourth control mode M4.

At time t6, the vehicle 6 advances into the section 1T, the first vehicle detection signal S1 changes to "none", and
The control mode changes to the fifth control mode M5. The control device 2 starts counting the time T4. The time T4 is the first vehicle detection signal S1 when the vehicle 6 moves out of the section 1T.
This is for preventing erroneous detection of the vehicle due to the chattering, and is set to 1 second, for example.

At time t7, time T4 elapses.
The control mode transits to the first control mode M1, and the vehicle detection state in the vehicle detection zone Z1 becomes the vehicle “absent”.

When the vehicle 6 exits the section 1T and enters the section 2T, both the first vehicle detection signal S1 of the section 1T and the first vehicle detection signal S2 of the section 2T are "present". After that, since the first vehicle detection signal S1 of the section 1T becomes “absent”, the continuity of the vehicle detection signal can be maintained between the vehicle detection zone Z1 and the section 2T. Therefore, when the vehicle 6 is traveling in the section 2T, the control device 2 stores the state of “present” in the level crossing control section 1 by stepping on the level crossing controller 111, and the vehicle 6 The crossing control signal S6 is output based on that the vehicle is in the section 2T.

FIG. 4 is a time chart showing another operation when the control mode makes one cycle. In the figure, the same reference numerals as those in FIGS. 1 to 3 denote the same components.

At time t21, the first vehicle detection signal S1 changes to "none". The control device 2 treats the first vehicle detection signal S1 as chattering. The control mode transits to the first control mode M1.

At time t22, the first vehicle detection signal S1 changes to "present" and the control mode changes to the first control mode M2. The control device 2 starts counting the time T3.

At time t61, chattering occurs in the first vehicle detection signal S1 and the first vehicle detection signal S1 is generated.
Changes to “present” in the vehicle, and the control mode changes to the fourth control mode M4. The control device 2 stops counting the time T4.

At time t62, the first vehicle detection signal S1 changes to "none", and the control mode changes to the fifth control mode M5. The control device 2 starts counting the time T4.

At time t71, time T4 elapses. The control mode transits to the first control mode M1, and the vehicle detection state in the vehicle detection zone Z1 becomes the vehicle “absent”.

Therefore, even if chattering occurs in the first vehicle detection signal S1, the control device 2 does not illegally output or stop the level crossing control signal S6. As a result, the crossing barrier does not descend or rise due to chattering of the vehicle detection signal.

FIG. 5 is a time chart showing the operation when the delay processing mode is activated. In the drawings, the same reference numerals as those in FIGS. 1 and 2 indicate the same components.
The figure shows a case where the first vehicle detection signal S1 is supplied to the control device 2 via the interlocking device.

At time t2, the second vehicle detection signal S
4 changes to the vehicle “present”, and the control mode changes to the delay processing mode 7. When in the delay processing mode 7, the vehicle is “present” in the vehicle detection zone Z1. The control device 2 starts counting the first time T1. The first time T1 is set to be longer than the time in which the first vehicle detection signal S1 is delayed and is set to, for example, 5 seconds.

At time t3, the first vehicle detection signal S
1 changes to “existence” of the vehicle, and the control mode changes to the third control mode M3. Since the control device 2 has obtained the first vehicle detection signal S1 of the vehicle “present” within the first time T1,
The first control signal S1 is processed as if delayed.

At time t5, the second vehicle detection signal S
4 becomes the vehicle "absent", and the control mode changes to the fourth control mode.

At time t6, the first vehicle detection signal S
1 changes to the vehicle “none”, and the control mode changes to the fifth control mode M5. The control device 2 starts counting the time T4.

At time t7, the time T4 elapses, the control mode changes to the first control mode M1, and the vehicle detection state in the vehicle detection zone Z1 becomes "no vehicle".

As described above, the control device 2 controls the vehicle "present" before the first vehicle detection signal S1 of the vehicle "present".
When the second vehicle detection signal S4 of No. 1 is supplied, the delay processing mode M7 is set so that the vehicle is "present" within the predetermined first time T1, and the vehicle "present" is provided within the first time T1. First of
When the vehicle detection signal S1 is obtained, the control mode is transited to the subsequent third control mode M3. Therefore, even when the first vehicle detection signal S1 is delayed and the operation sequence is broken, the first time When the first vehicle detection signal S1 of the vehicle "present" is obtained within T1, the control mode transits from the delay processing mode to the third control mode, and the processing can be performed in the normal control mode. Therefore, even if the first vehicle detection signal S1 of the track circuit is delayed and the operation sequence is broken, the appropriate level crossing control signal S6 can be output.

FIG. 6 is a time chart showing the operation when an abnormality determination is made in the delay processing mode. In the figure, the same reference numerals as those in FIG. 5 indicate the same components.

At time t4, the first time T1 elapses. Since the control device 2 cannot obtain the first vehicle detection signal S1 of the vehicle "present" within the first time T1, the control device 2 compulsorily shifts the control mode to the first control mode M1.
The vehicle detection state in the vehicle detection zone Z1 is “none” of the vehicle. Therefore, the control device 2 controls the vehicle detector 11
1 does not output an illegal level crossing control signal S6 by processing as if the vehicle was illegally detected.

The control device 2 shifts to the backup state and processes the control modes other than the first control mode M1 as "existence" of the vehicle. When the vehicle 6 enters the section 1T after the transition to the backup state and the first vehicle detection signal S1 becomes the vehicle “present”, the control device 2 shifts the control mode to the second control mode M2, The vehicle detection state in the detection zone Z1 is “present”. For this reason,
Since the control device 2 substantially moves the alarm start point P1 to the boundary P12 of the section 1T for processing, even if the vehicle detector 111 fails, the railroad crossing can be controlled safely.

The control device 2 shown in FIGS. 1 and 2 has a second time T2 which is separately determined when the second vehicle detection signal S4 of the vehicle "absent" is obtained within the first time T1. Another delay processing mode M8 that sets the vehicle as "present" is set, and when the first vehicle detection signal S1 of the vehicle "present" is obtained within the second time T2, the control mode is set to the following second. Control mode M of 4
4, and when the first vehicle detection signal S1 of the vehicle “present” cannot be obtained within the second time T2, the first transition to the first control mode M1 is forcibly performed.

FIG. 7 is a time chart showing the operation when another delay processing mode operates. In the figure, FIG.
The same reference numerals as those in FIGS. 2 and 5 denote the same components.

At time t21, the second vehicle detection signal S4 becomes "absent" and the control mode changes to another delay processing mode M8. The control device 2 starts counting the second time T2. The second time T2 is set to 5 seconds, for example, like the first time T1.

At time t3, the first vehicle detection signal S
1 changes to the vehicle “present”, and the control mode transits to the fourth control mode M4. Therefore, the first vehicle detection signal S1
Is delayed and the operation sequence is broken, if the first vehicle detection signal S1 of the vehicle “present” is obtained within the second time T2, the control mode changes from the other delay processing modes M8 to The control mode M4 is changed to the normal control mode. Accordingly, even if the first vehicle detection signal S1 of the track circuit is delayed and the operation sequence is broken, the appropriate level crossing control signal S6 can be output.

FIG. 8 is a time chart showing the operation when an abnormality determination is made in another delay processing mode.
In the figure, the same reference numerals as those in FIG. 7 denote the same components.

At time t41, the second time T2 elapses. The control device 2 determines that the vehicle “exists” within the second time T2.
Since the first vehicle detection signal S1 is not obtained, the control mode is forcibly changed to the first first control mode M1. The vehicle detection state in the vehicle detection zone Z1 is “none” of the vehicle. For this reason, the control device 2 uses the vehicle detector.
111 does not process the vehicle as if it detected the vehicle illegally and does not output the illegal level crossing control signal S6.

The control device 2 shifts to the backup state and processes the control modes other than the first control mode M1 as "existence" of the vehicle. When the vehicle 6 enters the section 1T after the transition to the backup state and the first vehicle detection signal S1 becomes the vehicle “present”, the control device 2 shifts the control mode to the second control mode M2, The vehicle detection state in the detection zone Z1 is “present”.

The control device 2 shown in FIG. 1 outputs the abnormality detection signal S7 when forcedly transiting to the first control mode M1 which is the first control mode. Therefore, it is possible to detect early that the vehicle detector 111 has failed,
The vehicle detector 111 can be repaired early.

FIG. 9 is a diagram showing another example of transition of control modes set in the control device. In the figure, the same reference numerals as those in FIG. 1 indicate the same components. Figure 1
The case where the processing of the vehicle detection zone Z2 shown in FIG. The display method is the same as in FIG.

The control modes are the first control mode M1 and the fourth control mode.
When the vehicle is in the control mode M4 and the fifth control mode M5, the vehicle is “none” in the vehicle detection zone Z2. When the vehicle is in the second control mode M2 and the third control mode M3, the vehicle is in the vehicle detection zone Z2. Yes.

The first vehicle detection signal S3 has a low level when the vehicle is "present" and has a high level when the vehicle is "absent". The symbol S3 ↓ means the first vehicle detection signal of the vehicle “present”, and the symbol S3 ↑ means the first vehicle detection signal of the vehicle “absent”. The second vehicle detection signal S5 has a high level when the vehicle is “present” and has a low level when the vehicle is “absent”. The symbol S5 ↑ means the second vehicle detection signal of the vehicle “present”, and the symbol S5 ↓ means the second vehicle detection signal of the vehicle “absent”.

FIG. 10 is a time chart showing the operation when the control mode makes one cycle. In the figure, the same reference numerals as those in FIGS. 1 and 9 denote the same components.

At time t1, the vehicle 6 is located in the section 2T, the first vehicle detection signal S3 becomes "none", and the second vehicle detection signal S5 becomes "none". The control mode is in the first control mode M1, and the vehicle is "absent" in the vehicle detection zone Z3. When the vehicle 6 is traveling in the section 2T, the control device 2 stores the state of the vehicle “present” in the leveling control section 1 by stepping on the leveling controller 111, and the vehicle 6 is in the section 2T. The railroad crossing control signal S6 is output based on the presence of the train.

At time t2, the vehicle 6 enters the section 3T, the first vehicle detection signal S3 changes to "present", and
The control mode transits to the second control mode 2. The vehicle detection state in the vehicle detection zone Z2 is “present”.

When the vehicle 6 exits the section 2T and enters the section 3T, both the first vehicle detection signal S2 of the section 2T and the first vehicle detection signal S3 of the section 3T are "present". After that, the first vehicle detection signal S2 in the section 2T becomes “absence” of the vehicle, so that the continuity of the vehicle detection signal can be maintained between the section 2T and the vehicle detection zone Z2. As a result, the control device 2 can continuously detect the vehicle within the railroad crossing control section 1 and continuously output the railroad crossing control signal S6.

At time t4, the vehicle 6 receives the warning end point P.
2, the second vehicle detection signal S5 changes to “present” in the vehicle, and the control mode changes to the third control mode M3.

At time t5, the vehicle 6 receives the warning end point P.
2 is entered, the second vehicle detection signal S5 changes to vehicle “none”, and the control mode transitions to the fourth control mode M4.
The state of vehicle detection in the vehicle detection zone Z2 is vehicle “absent”. The control device 2 stops the level crossing control signal S6. The railroad crossing alarm 4 stops ringing and the railroad crossing breaker 5 rises.

At time t6, the vehicle 6 advances into the section 3T, the first vehicle detection signal S3 changes to "none",
The control mode changes to the fifth control mode M5. The control device 2 starts counting the time T4.

At time t7, time T4 elapses.
The control mode transits to the first control mode M1.

FIG. 11 is a time chart showing another operation when the control mode makes one cycle. In the figure, FIG.
The same reference numerals as those in FIGS. 9 and 10 denote the same components.

At time t61, chattering occurs in the first vehicle detection signal S3, and the first vehicle detection signal S3 is generated.
Changes to “present” in the vehicle, and the control mode changes to the fourth control mode M4. The control device 2 stops counting the time T4.

At time t62, the first vehicle detection signal S3 changes to "none", and the control mode changes to the fifth control mode M5. The control device 2 starts counting the time T4.

At time t7, time T4 elapses.
The control mode transits to the first control mode M1.

Therefore, even if chattering occurs in the first vehicle detection signal S3, the control device 2 can output the appropriate level crossing control signal S6.

FIG. 12 is a time chart showing the operation when the delay processing mode is activated. In the figure, the same reference numerals as those in FIGS. 1 and 9 denote the same components.

At time t2, the second vehicle detection signal S
5 changes to “present” in the vehicle, and the control mode changes to the delay processing mode 7. In the delay processing mode 7, the vehicle is “present” in the vehicle detection zone Z2. The control device 2 starts counting the first time T1.

At time t3, the first vehicle detection signal S
1 changes to “existence” of the vehicle, and the control mode changes to the third control mode M3. Since the control device 2 has obtained the first vehicle detection signal S3 of the vehicle “present” within the first time T1,
The first control signal S3 is processed as if it was delayed.

At time t5, the second vehicle detection signal S
5 becomes the vehicle "none", and the control mode changes to the fourth control mode M4. The state of vehicle detection in the vehicle detection zone Z2 is vehicle “absent”.

At time t6, the vehicle 6 advances into the section 3T, the first vehicle detection signal S3 changes to "none",
The control mode changes to the fifth control mode M5. The control device 2 starts counting the time T4.

At time t7, the time T4 elapses and the control mode changes to the first control mode M1.

As described above, the control device 2 controls the vehicle "present" before the first vehicle detection signal S3 of the vehicle "present".
When the second vehicle detection signal S5 is supplied, the delay processing mode M7 that sets the vehicle "present" within the predetermined first time T1 is set, and the vehicle "present" within the first time T1. First of
When the vehicle detection signal S3 is obtained, the transition to the subsequent third control mode M3 is made. Therefore, the first vehicle detection signal S
3 is delayed and the operation sequence is broken, the delay processing mode M7 to the third control mode M3 can be used when the first vehicle detection signal S3 of the vehicle "present" is obtained within the first time T1. And can be processed in the normal control mode. Therefore, the first vehicle detection signal S in the section (track circuit) 3T
Even if there is a delay in 3 and the operation sequence is broken, the appropriate level crossing control signal S6 can be output.

FIG. 13 is a time chart showing the operation when an abnormality determination is made in the delay processing mode. In the figure, the same reference numerals as those in FIG. 12 denote the same components.

At time t4, first time T1 elapses. Since the control device 2 cannot obtain the first vehicle detection signal S3 of the vehicle “present” within the first time T1, the control mode is forced to transition to the first control mode M1.
The state of vehicle detection in the vehicle detection zone Z2 is vehicle “absent”. Therefore, the control device 2 controls the vehicle detector 11
No. 2 does not output an illegal railroad crossing control signal S6 as if the vehicle was illegally detected.

The control device 2 shifts to the backup control and processes the control modes other than the first control mode M1 as "existence" of the vehicle. The control device 2 uses the abnormality detection signal S
7 is output.

FIG. 14 is a time chart showing the operation when another delay processing mode is activated. In the figure, the same reference numerals as those in FIGS. 1, 9 and 12 indicate the same components.

At time t21, the second vehicle detection signal S5 becomes "none" of the vehicle, and the control mode transits to another delay processing mode M8. The control device 2 starts counting the second time T2. The second time T2 is set to 5 seconds, for example, like the first time T1.

At time t3, the first vehicle detection signal S
3 changes to the vehicle “present”, and the control mode changes to the fourth control mode M4. Therefore, the first vehicle detection signal S1
Is delayed and the operation sequence is broken, if the first vehicle detection signal S1 of the vehicle “present” is obtained within the second time T2, the control mode changes from the other delay processing modes M8 to The control mode M4 is changed to the normal control mode. Thereby, even if the first vehicle detection signal S3 in the section 3T is delayed and the operation sequence is broken, the appropriate level crossing control signal S6 can be output.

FIG. 15 is a time chart showing the operation when an abnormality determination is made in another delay processing mode. In the figure, the same reference numerals as those in FIGS. 1, 9 and 14 denote the same components.

At time t41, second time T2 elapses. The control device 2 determines that the vehicle “exists” within the second time T2.
Since the first vehicle detection signal S3 is not obtained, the control mode is forcibly changed to the first control mode M1. The state of vehicle detection in the vehicle detection zone Z2 is vehicle “absent”. For this reason, the control device 2 uses the vehicle detector.
The 112 does not process the vehicle as if it detected the vehicle illegally and does not output the illegal leveling control signal S6.

The control device 2 shifts to the backup control and processes the control modes other than the first control mode M1 as "present" in the vehicle. The control device 2 uses the abnormality detection signal S
7 is output.

FIG. 16 is a time chart showing the operation of the chattering removal processing of the first vehicle detection signal.

At time t2, the first vehicle detection signal S
3 becomes the vehicle “present”, and the control mode transits to the second control mode M2. The vehicle detection state in the vehicle detection zone Z2 is “present”.

At time t21, the first vehicle detection signal S3 changes to "none", and the control mode changes to the ninth control mode M9. When in the control mode M9, the vehicle detection state in the vehicle detection zone Z2 is “present”
Becomes

At time t22, the first vehicle detection signal S3 becomes "present" in the vehicle, and the control mode changes to the second control mode M2.

As a result, chattering of the first vehicle detection signal S3 can be prevented, and a stable level crossing control signal S6 can be output.

FIG. 17 is a time chart showing the processing when the vehicle detector is provided near the boundary in front of the route of the section and the operation sequence of the first vehicle detection signal and the second vehicle detection signal is broken.

Times t1 to t4 are the same as in the case of FIG.

At time t5, the first vehicle detection signal S
3 changes to the vehicle “none”, and the control mode changes to the sixth control mode M6. The control mode is the sixth control mode M6
In the case of, the vehicle detection state in the vehicle detection zone Z2 is “present”. The control device 2 starts counting the time T6.

At time t6, the second vehicle detection signal S
5 changes to the vehicle “none”, and the control mode changes to the fifth control mode M5. The state of vehicle detection in the vehicle detection zone Z2 is vehicle “absent”. The control device 2 has time T4
Start counting.

At time t71, time T4 has passed,
The control mode transits to the first control mode M1.

Therefore, the vehicle detector 112 is provided at the boundary portion in front of the route of the section 3T, and the first vehicle detection signal S3 is generated.
When the vehicle is “absent” before the second vehicle detection signal S5 and the operation sequence of the first vehicle detection signal S3 and the second vehicle detection signal S5 is broken, the second vehicle detection signal When S5 becomes “absent”, the vehicle can be made “absent” in the vehicle detection zone Z2, and the appropriate level crossing control signal S6
Can be output.

[0102]

As described above, according to the present invention, it is possible to provide a railroad crossing control device which outputs an appropriate railroad crossing control signal even if the vehicle detection signal of the track circuit is delayed and the operation sequence is broken.

[Brief description of the drawings]

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

FIG. 2 is a diagram showing an example of transition of control modes set in the control device.

FIG. 3 is a time chart showing an operation when the control mode makes one cycle.

FIG. 4 is a time chart showing another operation when the control mode makes one cycle.

FIG. 5 is a time chart showing the operation when the delay processing mode is activated.

FIG. 6 is a time chart showing an operation when an abnormality determination is made in the delay processing mode.

FIG. 7 is a time chart showing an operation when another delay processing mode operates.

FIG. 8 is a time chart showing an operation when an abnormality determination is made in another delay processing mode.

FIG. 9 is a diagram showing another example of transition of control modes set in the control device.

FIG. 10 is a time chart showing an operation when the control mode makes one cycle.

FIG. 11 is a time chart showing another operation when the control mode makes one cycle.

FIG. 12 is a time chart showing the operation when the delay processing mode is activated.

FIG. 13 is a time chart showing an operation when an abnormality determination is made in the delay processing mode.

FIG. 14 is a time chart showing an operation when another delay processing mode operates.

FIG. 15 is a time chart showing an operation when an abnormality determination is made in another delay processing mode.

FIG. 16 is a time chart showing the operation of chattering removal processing for the first vehicle detection signal.

FIG. 17 is a time chart showing a process when a vehicle detector is provided at a boundary part in front of a route of a section.

[Explanation of symbols]

 1 Crossing control section 1T-3T section 111, 112 Vehicle detector 2 Control device M1-M5 Control mode M7 Delay processing mode M8 Delay processing mode T1 1st time T2 2nd time S1-S3 1st vehicle detection Signal S4, S5 Second vehicle detection signal S6 Level crossing control signal 3 Level crossing 4 Level crossing alarm 5 Level crossing breaker 6 Vehicle

Claims (7)

[Claims] 1. A railroad crossing control device including a railroad crossing control section and a control device, wherein the railroad crossing control section includes a plurality of sections having track circuits, and is a rearmost section and a frontmost section seen in a traveling direction. At least one of the sections includes a vehicle detector, forms a vehicle detection zone between the boundary of the track circuit and the vehicle detector, and each of the track circuits detects the presence or absence of a vehicle in its section. And outputs a first vehicle detection signal, the vehicle detector detects the vehicle passing above itself, and outputs a second vehicle detection signal. The vehicle detection signal and the second vehicle detection signal are input and have a plurality of control modes that make a cycle according to the operation sequence, and the control mode is sequentially transitioned according to the operation sequence, The presence / absence of a vehicle is determined, a level crossing control signal is output according to the presence / absence of the vehicle, and the second vehicle detection signal of the vehicle “present” is provided before the first vehicle detection signal of the vehicle “present”. Is supplied,
A delay processing mode for setting the vehicle "present" within the first time determined is set, and when the first vehicle detection signal of the vehicle "present" is obtained within the first time, A railroad crossing control device that causes a transition to the control mode, and forcibly transitions to the first control mode when the first vehicle detection signal indicating the presence of the vehicle is not obtained within the first time. 2. The railroad crossing control device according to claim 1, wherein the control device, when the second vehicle detection signal of the vehicle “absent” is obtained within the first time, When another delay processing mode in which the vehicle is “present” is set within the second time that is separately determined, and when the first vehicle detection signal of the vehicle “present” is obtained within the second time. A crossing control device for making a transition to the subsequent control mode and forcibly transitioning to the first control mode when the first vehicle detection signal of the vehicle "present" is not obtained within the second time. 3. The railroad crossing control device according to claim 1, wherein the control device outputs an abnormality detection signal when the control device is forced to transition to the first control mode. 4. The railroad crossing control device according to claim 1, wherein the control device obtains the first vehicle detection signal of the vehicle “present”, and then the vehicle “present”. When the second vehicle detection signal of “No” is obtained, and when the second vehicle detection signal of the vehicle “No” is obtained next, the control mode is sequentially transitioned, and then the control mode of the vehicle “No” is changed. When the first vehicle detection signal is obtained,
Crossing control device that returns to the first control mode. 5. The railroad crossing control device according to claim 4, wherein the control device returns to a first control mode when the first vehicle detection signal of the vehicle “absent” continues for a predetermined time. Crossing control device. 6. The railroad crossing control device according to claim 4, wherein the control circuit sets the corresponding control mode when the second vehicle detection signal of the vehicle “present” is obtained. A level crossing control device in which a corresponding control mode is set to a vehicle "absent" state when the first vehicle detection signal of the vehicle "absent" is obtained after the vehicle becomes "present" state. 7. The railroad crossing control device according to claim 4, wherein the control circuit determines that the corresponding control mode is set when the first vehicle detection signal indicating that the vehicle is “present” is obtained. The level crossing control device in which the corresponding control mode is set to the vehicle "absent" state when the second vehicle detection signal indicating the vehicle "absent" is obtained after the vehicle becomes "present".