CN110143224B - Railway crossing monitoring method and system - Google Patents
Railway crossing monitoring method and system Download PDFInfo
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- CN110143224B CN110143224B CN201910371508.5A CN201910371508A CN110143224B CN 110143224 B CN110143224 B CN 110143224B CN 201910371508 A CN201910371508 A CN 201910371508A CN 110143224 B CN110143224 B CN 110143224B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000001514 detection method Methods 0.000 claims abstract description 161
- 230000000007 visual effect Effects 0.000 claims description 31
- 238000004891 communication Methods 0.000 description 13
- 230000000903 blocking effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
- B61L27/04—Automatic systems, e.g. controlled by train; Change-over to manual control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L29/00—Safety means for rail/road crossing traffic
- B61L29/24—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L29/00—Safety means for rail/road crossing traffic
- B61L29/24—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning
- B61L29/28—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning electrically operated
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention relates to a railway crossing monitoring method and a system, comprising the following steps: inputting a first detection signal; identifying a first detection signal; when the first detection signal is identified as a first position signal for indicating the train to travel to a stopping early warning position near the road junction along the railway, whether a moving target exists near the road junction or not is detected according to the first position signal, and the train can be timely scheduled to stop automatically through a scheduling instruction, so that the safety of the moving target at the railway road junction is effectively ensured, and the degree of automatically controlling the train is promoted; when detecting that a moving target exists near a crossing, sending a dispatching instruction for dispatching the automatic stop of the train; when no moving target is detected near the railway crossing, the detection of the moving target is stopped, so that the monitoring resources of the railway crossing can be saved, and the automatic and fine monitoring of the railway crossing is promoted.
Description
Technical Field
The invention relates to the technical field of railway safety, in particular to a railway crossing monitoring method and a railway crossing monitoring system.
Background
In the related art, the railway crossing monitoring system comprises an electromagnetic sensor, a singlechip and blocking equipment, wherein the singlechip is respectively connected with the electromagnetic sensor and the blocking equipment; the electromagnetic sensor arranged at the rail joint can detect the running position of the train along the railway and input detection signals into the singlechip, and the singlechip can control the blocking equipment to switch according to the detection signals, so that the railway crossing is switched through the blocking equipment.
However, the railway crossing monitoring system cannot detect whether a pedestrian or a vehicle enters the blocking device before the blocking device is closed, and cannot detect whether a moving target exists near the railway crossing in advance, so that the automatic monitoring degree of the railway crossing monitoring system is low.
Disclosure of Invention
Aiming at the defect that whether a moving target exists near a railway crossing or not is detected in advance in the prior art, the invention provides a railway crossing monitoring method and a railway crossing monitoring system.
In a first aspect, the present invention provides a railway crossing monitoring method, comprising:
inputting a first detection signal;
identifying the first detection signal;
detecting whether a moving target exists near a road junction according to a first position signal when the first detection signal is recognized as the first position signal for indicating a train to travel to a parking early-warning position near the road junction along a railway;
when detecting that a moving target exists near the crossing, sending a dispatching instruction for dispatching the automatic stop of the train;
and stopping detecting the moving object when detecting that the moving object is not near the crossing.
In a second aspect, the present invention provides a railway crossing monitoring system comprising a railway detection subsystem and a crossing detection subsystem;
the railway detection subsystem is used for inputting a first detection signal to the crossing detection subsystem when detecting that a train runs to a parking early-warning position near a crossing along a railway or when detecting that the train runs between a safety early-warning position and the parking early-warning position along the descending direction of the track;
the crossing detection subsystem is used for identifying the first detection signal; detecting whether a moving target exists near a road junction according to a first position signal when the first detection signal is recognized as the first position signal for indicating the train to travel to the parking early-warning position near the road junction along a railway; when detecting that a moving target exists near the crossing, sending a dispatching instruction for dispatching the automatic stop of the train; and stopping detecting the moving object when detecting that the moving object is not near the crossing.
The railway crossing monitoring method and system provided by the invention have the beneficial effects that: the first detection signal is used for detecting whether the moving target exists near the road junction in advance before the train enters the road junction, and under the condition that the moving target exists near the road junction, the train can be timely scheduled to stop automatically through the scheduling instruction, so that the safety of the moving target at the railway road junction is effectively guaranteed, the degree of automatic control of the train is improved, under the condition that the moving target does not exist near the road junction, the detection of the moving target is stopped in time, the degree of automatic monitoring of the railway road junction is promoted, the monitoring resources of the railway road junction can be saved, and the automatic and fine monitoring of the railway road junction is promoted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to the drawings without inventive effort to a person skilled in the art.
Fig. 1 is a schematic flow chart of a railway crossing monitoring method according to an embodiment of the present invention;
fig. 2 is a schematic plan view of a railway crossing according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a railway crossing monitoring circuit according to an embodiment of the present invention;
fig. 4 is a schematic diagram of another railway crossing monitoring circuit according to an embodiment of the present invention;
fig. 5 is a schematic flow chart of another railway crossing monitoring method according to an embodiment of the present invention;
FIG. 6 is a schematic plan view of another railroad grade crossing provided in accordance with an embodiment of the present invention;
fig. 7 is a schematic diagram of another railway crossing monitoring circuit according to an embodiment of the present invention;
fig. 8 is a schematic flow chart of another railway crossing monitoring method according to an embodiment of the present invention;
fig. 9 is a schematic plan view of another railroad grade crossing provided by an embodiment of the present invention;
fig. 10 is a schematic diagram of another railway crossing monitoring circuit according to an embodiment of the present invention;
fig. 11 is a schematic diagram of a railway crossing monitoring system according to an embodiment of the present invention;
fig. 12 is a schematic diagram of another railway crossing monitoring system according to an embodiment of the present invention.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
Example 1
As shown in fig. 1, a railway crossing monitoring method according to an embodiment of the present invention includes: inputting a first detection signal; identifying a first detection signal; detecting whether a moving target exists near the crossing according to the first position signal when the first detection signal is identified as the first position signal; when detecting that a moving target exists near a crossing, sending a dispatching instruction for dispatching the automatic stop of the train; when no moving object near the crossing is detected, the detection of the moving object is stopped.
Specifically, as shown in fig. 2, the crossing is a crossing of a railway and a road, one first electromagnetic sensor 1 is arranged on the railway along the upward direction and is 50 meters away from the crossing, the other first electromagnetic sensor 1 is arranged on the railway along the downward direction and is 50 meters away from the crossing, the position of each group of electromagnetic sensors 1 arranged on the railway is a parking early warning position, and the signals generated by each first electromagnetic sensor 1 represent first detection signals; two sets of infrared opposite light curtains 2 are arranged on a road, the area scanned by the infrared rays emitted by each set of infrared opposite light curtains 2 is a moving target detection area, and the moving target detection area can be a rectangular area, for example: the rectangular area has a length of 2 meters and a width of 1 meter.
As shown in fig. 3, each first electromagnetic sensor 1 and each group of infrared correlation light curtains 2 are respectively connected to a first host computer.
When the train runs to the parking early warning position, any one of the first electromagnetic sensors 1 inputs a first detection signal to the first host; the first host detects whether a first communication port connected with the first electromagnetic sensor 1 inputs a first detection signal, if so, a first port identifier corresponding to the first communication port is searched from a data table, the first detection signal is identified as a first position signal according to the first port identifier, and the first position signal is used for indicating a train to travel to a parking early warning position near a road junction along a railway; and controlling the start of the infrared opposite light curtain according to the first position signal, wherein the infrared opposite light curtain is used for detecting whether a moving target exists in the moving target detection area or not after the start.
When a moving target exists in the moving target detection area, a circuit in the infrared correlation light curtain inputs a high level to the first host, the first host determines that the moving target occupies the moving target detection area according to the high level, at the moment, a scheduling instruction is input to a train through a wireless scheduling module in the first host, the scheduling instruction comprises emergency stop information, and an LKJ2000 monitoring system in the train can automatically control the train to stop.
When the moving target detection area has no moving target, the circuit inside the infrared opposite-shooting light curtain inputs low level to the first host computer, and at the moment, the first host computer controls the infrared opposite-shooting light curtain to be closed, so that the moving target is stopped to be detected.
The first detection signal is used for detecting whether a moving target exists near the road junction in advance before the train enters the road junction, and under the condition that the moving target exists near the road junction, the train can be timely scheduled to stop automatically through the scheduling instruction, so that the safety of the moving target (such as pedestrians or vehicles) at the railway road junction is effectively guaranteed, the degree of automatic control of the train is improved, under the condition that the moving target does not exist near the road junction, the moving target is stopped in time, the degree of automatic monitoring of the railway road junction is improved, the monitoring resources of the railway road junction can be saved, and the automatic and fine monitoring of the railway road junction is promoted.
Example two
Inputting a first detection signal; identifying a first detection signal; when the first host recognizes that the first detection signal is a first position signal, the first host inputs a fifth control signal to the second host according to the first position signal; the second host controls the infrared correlation light curtain to detect a moving target according to a fifth control signal; when the infrared opposite light curtain detects that a moving target exists near the crossing, the infrared opposite light curtain controls the third host to send a dispatching instruction for dispatching the automatic stop of the train; and stopping detecting the moving target when the infrared opposite-irradiation light curtain detects that the moving target is not near the road junction.
Specifically, as shown in fig. 2 and 4, the first host is electrically connected to the first electromagnetic sensor 1 and the second host, and the infrared correlation light curtain 2 is electrically connected to the second host and the third host.
When the second host detects the fifth control signal, the second host synchronously controls the infrared correlation light curtains of each group to start, and the communication capacity of the first host can be expanded through the second host so as to share the communication pressure of the first host, thereby being beneficial to improving the signal processing capacity.
When each group of infrared opposite-shooting light curtains detects a moving target, the infrared opposite-shooting light curtains input detection signals for indicating the detection of the moving target to a third host, the third host is started according to the detection signals for indicating the detection of the moving target, the third host can comprise a ground wireless scheduler for inputting a scheduling instruction, after the third host is started, the ground wireless scheduler can be in wireless communication with a train, so that the ground wireless scheduling host transmits the scheduling instruction to the train, and the flexibility of automatically controlling the parking of the train is improved.
Example III
As shown in fig. 5, the method for monitoring a railway crossing provided by the embodiment of the invention includes: inputting a second detection signal; controlling the safety prompting device group to switch from a default mode to a safety prompting mode according to the second detection signal; inputting a first detection signal; identifying a first detection signal; when the first detection signal is identified as a first direction signal, controlling the safety prompting device group to switch back to a default mode from the safety prompting device according to the first direction signal; detecting whether a moving target exists near the crossing according to the first position signal when the first detection signal is identified as the first position signal; when detecting that a moving target exists near a crossing, sending a dispatching instruction for dispatching the automatic stop of the train; when no moving object near the crossing is detected, the detection of the moving object is stopped.
Specifically, as shown in fig. 6, another direction sensor and one second electromagnetic sensor 3 are respectively disposed on the railway at a distance of 200 m from the crossing and 250 m from the crossing in the upward direction, and another second electromagnetic sensor 3 is disposed on the railway at a distance of 250 m from the crossing in the downward direction; two road crossing annunciators 4 which are 5 meters away from the railway and two audible and visual annunciators 5 which are 1.5 meters away from the railway are respectively arranged on two sides of the road, and one road crossing annunciator 4 and two audible and visual annunciators 5 which are positioned on the same side of the railway form a safety prompting device group.
The position of each second electromagnetic sensor 3 arranged on the railway is a safety early warning position, the signal generated by each second electromagnetic sensor 3 can be used for indicating a second detection signal of the train running to the safety early warning position along the railway, and the signal generated by the direction sensor a also represents the first detection signal.
As shown in fig. 7, the first host is electrically connected to each second electromagnetic sensor 3, each direction sensor a, and each crossing signal 4 is electrically connected to a corresponding audible and visual alarm 5.
When the train runs to the safety precaution position, any one of the second electromagnetic sensors 3 inputs a second detection signal to the first host, when the first host detects the second detection signal, one crossing signal machine 4 and two audible and visual annunciators 5 which are positioned on the same side of the railway are controlled, so that a red light in the crossing signal machine 4 is switched from off to on and a green light is switched from on to off, the audible and visual annunciators 5 broadcast safety prompt voice and the annunciators emit flashing lights, at the moment, the red light is turned off and green to be in a default mode of the crossing signal machine 4, the red light is turned on and the green is turned off to be in a safety prompt mode of the crossing signal machine 4, the audible and visual annunciators do not broadcast safety prompt voice and the annunciators do not emit flashing lights to be in a default mode of the audible and visual annunciators 5, the audible and visual annunciators emit flashing lights to be in a safety prompt mode of the audible and visual annunciators 5, and visual annunciators are in a safety prompt voice such as: the train comes, the passing is forbidden, and the safety prompt device group can be controlled earlier through the second detection signal to give the safety prompt to the moving target in different modes, so that pedestrians can know the running position of the train on the railway more timely.
In some cases, during the process that the train moves from the safety early warning position to the crossing along the upward direction, the train does not move into the crossing, and during the process that the train moves from the safety early warning position to the first track position between the crossing, the train is switched from the upward direction to the downward direction to move, at this time, the train does not continue to move to the crossing, and the safety prompt device group does not need to continue safety prompt.
The direction sensor a can detect the running direction of the train on the track, when the direction sensor a detects that the running direction is the upward direction, the direction sensor a inputs a first detection signal to the first host, the first host detects whether a second communication port connected with the direction sensor a inputs the first detection signal, if yes, a first direction identification code corresponding to the second communication port is searched from the data table according to time sequence, the first detection signal is identified as a third direction signal for indicating the train to run to the crossing along the upward direction according to the first direction identification code, and at the moment, any one of the crossing annunciators 4 and any one of the audible-visual annunciators 5 keep a safe prompt mode.
When the direction sensor a detects that the running direction is the downlink direction, the direction sensor a inputs a first detection signal to the first host, the first host detects whether the second communication port inputs the first detection signal, if yes, a second direction identification code corresponding to the second communication port is searched from the data table, the first detection signal is identified as a first direction signal according to the second direction identification code, and the first direction signal is used for indicating that the train runs on a track from a safety early warning position to a parking early warning position along the downlink direction.
As an optional implementation manner, controlling the safety prompting device group to switch from the default mode to the safety prompting mode according to the second detection signal specifically includes: inputting a first control signal to a crossing signal machine according to the second detection signal; switching the crossing signal machine from a default mode to a safety prompt mode according to the first control signal, and inputting a second control signal to the audible and visual alarm in the safety prompt mode; and switching the audible and visual alarm from a default mode to a safety prompt mode according to the second control signal.
When the first host detects the second detection signal, the first host inputs the first control signal to the crossing annunciator 4 in the safety prompt device group, the crossing annunciator 4 controls the red light in the crossing annunciator to switch from off to on according to the first control signal and controls the green light in the crossing annunciator to switch from on to off, the crossing annunciator 4 synchronously inputs the second control signal to the two corresponding audible and visual annunciators 5 in the red light on and green light off mode, and each audible and visual annunciator 5 controls the voice alarm devices of the two audible and visual annunciators 5 to broadcast safety prompt voice according to the second control signal and controls the alarm lamp in the crossing annunciator to emit flashing light.
As an alternative embodiment, the switching of the safety prompting device group from the safety prompting device to the default mode is controlled according to the first direction signal, which specifically includes: inputting a third control signal to the crossing signal machine according to the first direction signal; switching the crossing signal machine from the safety prompting state to a default prompting state according to the third control signal, and inputting a fourth control signal to the audible and visual alarm under the default prompting state; and switching the audible and visual alarm from the safety prompt state to the default prompt state according to the fourth control signal.
The first host inputs a third control signal to the crossing signal machine according to the first direction signal, the crossing signal machine is switched from a safety prompt state to a default prompt state according to the third control signal, and the crossing signal machine also inputs a fourth control signal to the audible and visual alarm in the default prompt state.
Example IV
As shown in fig. 8, the method for monitoring a railway crossing provided by the embodiment of the invention includes: inputting a second detection signal; controlling the safety prompting device group to switch from a default mode to a safety prompting mode according to the second detection signal; inputting a first detection signal; identifying a first detection signal; when the first detection signal is identified as a first direction signal, controlling the safety prompting device group to switch back to a default mode from the safety prompting device according to the first direction signal; detecting whether a moving target exists near the crossing according to the first position signal when the first detection signal is identified as the first position signal; when detecting that a moving target exists near a crossing, sending a dispatching instruction for dispatching the automatic stop of the train; stopping detecting the moving object when no moving object near the crossing is detected; inputting a third detection signal; identifying a third detection signal; stopping detecting the moving target and keeping the safety prompting device set in a safety prompting state when the third detection signal is identified as the second direction signal; when the third detection signal is identified as the second position signal, continuously detecting the moving target, and enabling the safety prompting device group to keep a safety prompting state; when the second position signal is stopped being input, the detection of the moving object is stopped and the safety prompting device group is switched from the safety prompting mode back to the default mode.
Specifically, as shown in fig. 9, a direction sensor b located 25 to 35 m from the crossing and one third electromagnetic sensor 6 located 0 to 5 m from the crossing are respectively arranged on the railway in the upward direction, and another third electromagnetic sensor 6 located 0 to 5 m from the crossing is arranged on the railway in the downward direction.
The signal generated by the direction sensor b and the signal generated by each third electromagnetic sensor 6 may each represent a third detection signal.
As shown in fig. 10, the first host is electrically connected to the direction sensor b and each of the third electromagnetic sensors 6.
When the direction sensor b detects that the traveling direction is the uplink direction, the direction sensor b inputs a third detection signal to the first host, the first host detects whether a third communication port connected with the direction sensor b inputs the third detection signal, if yes, a third direction identification code corresponding to the third communication port is searched from the data table according to a time sequence, the third detection signal is identified as a third direction signal according to the third direction identification code, and at this time, any group of infrared correlation light curtain 2 keeps detecting.
When the direction sensor b detects that the running direction is the downlink direction, the direction sensor b inputs a third detection signal to the first host, the first host detects whether the third communication port inputs the third detection signal, if yes, a fourth direction identification code corresponding to the third communication port is searched from the data table, the third detection signal is identified as a second direction signal according to the fourth direction identification code, the second direction signal is used for indicating that the train runs on a track from the crossing to the safety pre-warning position along the downlink direction, and at the moment, the first host controls any group of infrared correlation light curtains 2 to stop detection.
The train runs in the crossing, a third electromagnetic sensor 6 positioned at the exit of the crossing inputs a third detection signal to the first host, the first host recognizes the third detection signal as a second position signal, the second position signal is used for indicating that the train runs in the crossing along a railway, and the first host synchronously controls the infrared opposite-irradiation light curtain and the safety prompting device group to continuously work according to the second position signal, so that the infrared opposite-irradiation light curtain continuously detects a moving target, the safety prompting device group is continuously in a safety prompting state, and the control efficiency of the first host is improved.
The train leaves the crossing, another third electromagnetic sensor 6 that is located crossing exit stops to input third detected signal to first host computer, first host computer stops detecting third detected signal and stops identifying third detected signal as the second position signal, at this moment, first host computer synchronous control infrared correlation light curtain and safe suggestion device group stop work for infrared correlation light curtain stops detecting moving target and safe suggestion device group switch back to default mode from safe suggestion mode, effectively saved the monitoring resource at railway crossing, the control efficiency of first host computer has been improved.
Example five
As shown in fig. 11, a railway crossing monitoring system according to an embodiment of the present invention includes: a railway detection subsystem and a crossing detection subsystem.
The railway detection subsystem is used for inputting a first detection signal to the road junction detection subsystem when detecting that the train runs to a parking early-warning position near the road junction along a railway or when detecting that the train runs between a safety early-warning position and a parking early-warning position along the descending direction of a track;
the crossing detection subsystem is used for identifying a first detection signal; when the first detection signal is identified as a first position signal for indicating a train to travel to a stop early warning position near a road junction along a railway, detecting whether a moving target exists near the road junction according to the first position signal; when detecting that a moving target exists near a crossing, sending a dispatching instruction for dispatching the automatic stop of the train; when no moving object near the crossing is detected, the detection of the moving object is stopped.
As an alternative embodiment, as shown in fig. 12, a safety prompting device set is further included, where the safety prompting device set includes a road-mouth annunciator and an audible and visual alarm.
The railway detection subsystem is also used for inputting a second detection signal to the crossing detection subsystem when the train is detected to run to a safety early warning position along the railway;
the crossing detection subsystem is also used for controlling the safety prompting device group to switch from a default mode to a safety prompting mode according to the second detection signal; when the first detection signal is identified as a first direction signal for indicating that the train runs between the safety early warning position and the parking early warning position along the descending direction of the track, the safety prompt device group is controlled to switch back to a default mode from the safety prompt device according to the first direction signal.
As an optional implementation manner, the crossing detection subsystem is specifically configured to input a first control signal to the crossing signal machine according to the second detection signal; and inputting a third control signal to the crossing signal machine according to the first direction signal.
The crossing signal machine is used for switching from a default mode to a safety prompt mode according to the first control signal, and inputting a second control signal to the audible and visual alarm in the safety prompt mode; and switching back to a default prompting state from the safety prompting state according to the third control signal, and inputting a fourth control signal to the audible and visual alarm under the default prompting state.
The audible and visual alarm is used for switching from a default mode to a safety prompt mode according to a second control signal; and switching from the safety prompt state to the default prompt state according to the fourth control signal.
As an alternative embodiment, the railway detection subsystem is further configured to input a third detection signal to the crossing detection subsystem when it is detected that the train is traveling in the crossing along the railway or when it is detected that the train is traveling in the crossing along the railway; when it is detected that the train exits the crossing along the railway, the input of a third detection signal to the crossing detection subsystem is stopped.
The crossing detection subsystem is also used for identifying a third detection signal; stopping detecting the moving target and enabling the safety prompting device group to maintain a safety prompting state when the third detection signal is identified as a second direction signal for indicating the train to run between the crossing and the parking early warning position along the downlink direction; when the third detection signal is identified as a second position signal for indicating that the train runs in the road junction along the railway, continuously detecting the moving target, and enabling the safety prompting device group to keep a safety prompting state; when the second position signal is stopped being input, the detection of the moving object is stopped and the safety prompting device group is switched from the safety prompting mode back to the default mode.
As an alternative embodiment, as shown in fig. 12, the crossing detection subsystem includes a first host, a second host, a third host, a fourth host, and an infrared correlation light curtain.
The first host is used for inputting a fifth control signal to the second host according to the first position signal.
The second host is used for controlling the infrared correlation light curtain to detect the moving target according to the fifth control signal.
As shown in fig. 9 and 12, the fourth main unit is electrically connected to the first main unit, each of the second electromagnetic sensors 3, the direction sensor a, the direction sensor b, and each of the crossing signal units 4.
When the fourth host detects the second detection signal, the fourth host controls the safety prompting device group to switch from the default mode to the safety prompting mode.
When the first host continuously recognizes that the third detection signal is the second position signal, the first host inputs a sixth control signal to the second host and the fourth host respectively; when the second host detects the sixth control signal, the second host controls the infrared opposite-irradiation light curtain to continuously detect the moving target, and if the infrared opposite-irradiation light curtain detects the moving target, the infrared opposite-irradiation light curtain inputs a fourth detection signal to the third host, and the third host is started according to the fourth detection signal so as to send a scheduling instruction; when the fourth host detects the sixth control signal, the fourth host controls the safety prompting device group to keep the safety prompting mode.
When the first host stops identifying the third detection signal as the second position signal, the first host inputs a fifth control signal to the second host and the fourth host respectively; when the second host detects the fifth control signal, the second host controls the infrared opposite-irradiation light curtain to stop detecting the moving target, the infrared opposite-irradiation light curtain inputs the fifth detection signal to the third host, and the third host is closed according to the fifth detection signal; when the fourth host detects the fifth control signal, the fourth host controls the safety prompting device group to switch back to the default mode from the safety prompting mode.
The reader should understand that in the description herein, a description of the terms "aspect," "alternative embodiments," or "some specific examples," etc., means that a particular feature, step, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention, and the terms "first" and "second," etc., are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any particular order of such features. Thus, a feature defining "first" and "second" etc. may explicitly or implicitly include at least one such feature.
In addition, in this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, steps, or characteristics described may be combined in any suitable manner in any one or more particular examples or examples. Furthermore, various specific examples or illustrations described in the specification, as well as features of different embodiments or illustrations, may be combined or/and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (2)
1. A method of monitoring a railroad grade crossing, comprising:
inputting a first detection signal;
identifying the first detection signal;
when the first detection signal is identified as a first position signal, detecting whether a moving target exists near the road junction according to the first position signal, wherein the first position signal is used for indicating a train to travel to a parking early warning position near the road junction along a railway;
when detecting that a moving target exists near the crossing, sending a dispatching instruction for dispatching the automatic stop of the train;
stopping detecting the moving object when detecting that the moving object is not near the crossing;
before the first detection signal is input, the method further comprises:
inputting a second detection signal, wherein the second detection signal is used for indicating the train to travel to a safety early-warning position along the railway, and the distance from the safety early-warning position to the road junction is greater than the distance from the parking early-warning position to the road junction;
controlling the safety prompting device group to switch from a default mode to a safety prompting mode according to the second detection signal;
the identifying the first detection signal further comprises:
when the first detection signal is identified as a first direction signal, the safety prompt device group is controlled to switch from the safety prompt mode to the default mode according to the first direction signal, wherein the first direction signal is used for indicating that the train runs between the safety early warning position and the parking early warning position along the downlink direction of the railway;
the safety prompting device group comprises a road mouth annunciator and an audible-visual annunciator, and the safety prompting device group is controlled to be switched from a default mode to a safety prompting mode according to the second detection signal, and the safety prompting device group specifically comprises:
inputting a first control signal to the crossing signal machine according to the second detection signal;
switching the crossing signal machine from the default mode to the safety prompt mode according to the first control signal, and inputting a second control signal to an audible and visual alarm in the safety prompt mode;
switching the audible and visual alarm from the default mode to the safety prompt mode according to the second control signal;
the controlling the safety prompting device group to switch from the safety prompting mode back to the default mode according to the first direction signal specifically includes:
inputting a third control signal to the crossing signal machine according to the first direction signal;
switching the crossing signal machine from the safety prompt mode back to the default mode according to the third control signal, and inputting a fourth control signal to the audible and visual alarm in the default mode;
switching the audible and visual alarm from the safety prompting mode back to the default mode according to the fourth control signal;
after detecting whether a moving object exists near the crossing according to the first detection signal, the method further comprises:
inputting a third detection signal;
identifying the third detection signal;
stopping detecting the moving target and enabling the safety prompting device group to maintain the safety prompting mode when the third detection signal is recognized as a second direction signal, wherein the second direction signal is used for indicating the train to run between the crossing and the parking early warning position along the descending direction;
continuously detecting the moving target and keeping the safety prompting device group in the safety prompting mode when the third detection signal is identified as a second position signal, wherein the second position signal is used for indicating that the train runs in the crossing along the railway;
stopping detecting the moving object and switching the safety prompting device group from the safety prompting mode back to the default mode when the second position signal is stopped being input;
the detecting whether a moving target exists near the crossing according to the first position signal specifically includes:
the first host inputs a fifth control signal to the second host according to the first position signal;
and the second host controls the infrared opposite-irradiation light curtain to detect the moving target according to the fifth control signal.
2. The railway crossing monitoring system is characterized by comprising a railway detection subsystem and a crossing detection subsystem;
the railway detection subsystem is used for inputting a first detection signal to the crossing detection subsystem when detecting that a train runs to a parking early-warning position near a crossing along a railway or when detecting that the train runs between a safety early-warning position and the parking early-warning position along the downlink direction of the railway;
the crossing detection subsystem is used for identifying the first detection signal; when the first detection signal is identified as a first position signal, detecting whether a moving target exists near the road junction according to the first position signal, wherein the first position signal is used for indicating a train to travel to the parking early warning position near the road junction along a railway; when detecting that a moving target exists near the crossing, sending a dispatching instruction for dispatching the automatic stop of the train; stopping detecting the moving object when detecting that the moving object is not near the crossing;
the safety prompting device group is also included;
the railway detection subsystem is further used for inputting a second detection signal to the crossing detection subsystem when the train is detected to travel to the safety early warning position along the railway, and the distance from the safety early warning position to the crossing is greater than the distance from the parking early warning position to the crossing;
the crossing detection subsystem is further used for controlling the safety prompting device group to switch from a default mode to a safety prompting mode according to the second detection signal; when the first detection signal is identified as a first direction signal, the safety prompt device group is controlled to switch from the safety prompt mode to the default mode according to the first direction signal, wherein the first direction signal is used for indicating that the train runs between the safety early warning position and the parking early warning position along the downlink direction of the railway;
the safety prompting device group comprises a road mouth annunciator and an audible and visual alarm;
the crossing detection subsystem is specifically used for inputting a first control signal to the crossing signal machine according to the second detection signal;
the crossing signal machine is used for switching from the default mode to the safety prompt mode according to the first control signal, and inputting a second control signal to the audible and visual alarm in the safety prompt mode;
the audible and visual alarm is used for switching from the default mode to the safety prompt mode according to the second control signal;
the crossing detection subsystem is specifically further used for inputting a third control signal to the crossing signal machine according to the first direction signal;
the crossing signal machine is further used for switching from the safety prompt mode to the default mode according to the third control signal, and inputting a fourth control signal to the audible and visual alarm in the default mode;
the audible and visual alarm is further used for switching from the safety prompt mode to the default mode according to the fourth control signal;
the railway detection subsystem is further used for inputting a third detection signal to the crossing detection subsystem when the train is detected to run between the crossing and the parking early warning position along the downlink direction or when the train is detected to run in the crossing along the railway; stopping inputting the third detection signal to the crossing detection subsystem when the train is detected to exit the crossing along the railway;
the crossing detection subsystem is further used for identifying the third detection signal; stopping detecting the moving target and enabling the safety prompting device group to maintain the safety prompting mode when the third detection signal is recognized as a second direction signal, wherein the second direction signal is used for indicating the train to run between the crossing and the parking early warning position along the descending direction; continuously detecting the moving target and keeping the safety prompting device group in the safety prompting mode when the third detection signal is identified as a second position signal, wherein the second position signal is used for indicating that the train runs in the crossing along the railway; stopping detecting the moving object and switching the safety prompting device group from the safety prompting mode back to the default mode when the second position signal is stopped being input;
the crossing detection subsystem comprises a first host, a second host and an infrared correlation light curtain;
the first host is used for inputting a fifth control signal to the second host according to the first position signal;
the second host is used for controlling the infrared opposite-irradiation light curtain to detect the moving target according to the fifth control signal.
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| DE102013223101A1 (en) * | 2013-11-13 | 2015-05-13 | Siemens Aktiengesellschaft | Railway crossing safety system |
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| CN204821617U (en) * | 2015-04-17 | 2015-12-02 | 上海铁路局科学技术研究所 | Grade crossing protects automatic early warning alarm system |
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