CN115052263A - Railway section wireless blocking equipment and working method thereof - Google Patents
Railway section wireless blocking equipment and working method thereof Download PDFInfo
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- H—ELECTRICITY
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- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
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- B61—RAILWAYS
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Abstract
The invention discloses a railway section wireless block device and a working method thereof, wherein the device comprises an interlocking block external connection interface module, a block machine logic switching and electric signal output module, a signal shaping and photoelectric isolation module, an Ethernet I/O processing module and a wireless communication conversion and routing module; the interlocking block external connection interface module receives a block signal sent by an interlocking control system; the blocking machine logic switching and electric signal output module receives a blocking signal and sends the blocking signal to the signal shaping and photoelectric isolation module; the signal shaping and photoelectric isolation module performs positive and negative pulse separation and amplification shaping on the blocking signal to form a digital blocking signal and outputs the digital blocking signal to the Ethernet I/O processing module; the Ethernet I/O processing module converts the blocking signal of the digital quantity into a network message and transmits the network message to the wireless communication conversion and routing module, and the wireless communication conversion and routing module completes the wireless transmission of the message.
Description
Technical Field
The invention relates to the technical field of railway traffic section blocking, in particular to a railway section wireless blocking device and a working method thereof.
Background
The communication medium adopted by the existing common railway inter-block equipment is not a copper cable or an optical cable, has the advantages of simplicity, convenience in use, low difficulty in maintenance and construction technology and the like, and is widely applied to the zone management and control of inter-block zones of railway stations in China. It has the following outstanding disadvantages:
(1) the copper cable is mainly made of nonferrous noble metal copper, the cost is high, the metal copper belongs to non-renewable resources, and the mass use of the copper cable is not beneficial to sustainable development and environmental protection.
2) The optical cable is low in cost and mature in technology, but has the same construction problem that ditching or stringing is needed as a copper cable, the distance of a railway block section is generally about several kilometers to dozens of kilometers, and the construction cost is far higher than the material cost.
(3) Under the wired transmission mode of long-distance cables or optical fibers and the like, if accidents (such as flood, debris flow and the like) occur and are damaged, normal use of equipment is affected unless damaged points are quickly found and repaired, and further unsafe factors are brought to railway transportation. Meanwhile, the emergency repair process itself may cause other safety problems for emergency repair personnel.
(4) The general blocking equipment has single function, and in order to complete specific service design, such as a single-wire semi-automatic single-wire blocking machine (64D), a double-wire blocking machine, an automatic blocking machine and the like, the equipment needs to be replaced when the service is changed, and unnecessary repeated investment is caused.
(5) Generally, fault self-checking of the blocking equipment is mostly limited to the station equipment, and fault detection and indication capability of equipment at the opposite end of the adjacent station is not provided. When a fault occurs, the repair takes long time, the parking accident is easy to cause, and the driving efficiency is reduced.
In conclusion, the existing railway section blocking equipment has the problems of high material cost, high construction difficulty, easy damage of a communication link due to natural factors, long troubleshooting and repairing time, single equipment function, investment waste, incapability of conveniently knowing the running state of equipment at the opposite end of an adjacent station and the like.
Disclosure of Invention
In view of this, the invention provides a wireless block device for a railway section in wireless communication and a working method thereof, which can realize full-duplex full-transparent transmission on a block signaling output by a railway signal computer interlocking system.
The invention provides a wireless blocking device for railway sections in a first aspect, which comprises: the interlocking block external connection interface module, the block machine logic switching and electric signal output module, the signal shaping and photoelectric isolation module, the Ethernet I/O processing module and the wireless communication conversion and routing module; the input end of the interlocking block external connection interface module is connected with an interlocking control system and used for receiving a block signal sent by the interlocking control system and simultaneously completing the protection of external line lightning or other overvoltage invasion; the input end of the blocking machine logic switching and electric signal output module is connected with the interlocking block external line connection interface module, and the output end of the blocking machine logic switching and electric signal output module is connected with the signal shaping and photoelectric isolation module and used for receiving a blocking signal of a railway signal computer interlocking control system and sending the blocking signal to the signal shaping and photoelectric isolation module; the input end of the signal shaping and photoelectric isolation module is connected with the output end of the blocking machine logic switching and electric signal output module, and the output end of the signal shaping and photoelectric isolation module is connected with the Ethernet I/O processing module and is used for receiving the blocking signal output by the blocking machine logic switching and electric signal output module, carrying out positive and negative pulse separation and amplification shaping on the blocking signal, forming a digital blocking signal and outputting the digital blocking signal to the Ethernet I/O processing module; the input end of the Ethernet I/O processing module is connected with the signal shaping and photoelectric isolation module, and the output end of the Ethernet I/O processing module is connected with the wireless communication conversion and routing module and is used for receiving the digital blocking signal output by the signal shaping and photoelectric isolation module, converting the digital blocking signal into a network message and transmitting the network message to the wireless communication conversion and routing module; the wireless communication conversion and routing module is used for wireless transmission of communication messages.
Furthermore, the input end of the ethernet I/O processing module is further connected to the wireless communication switching and routing module, and the output end of the ethernet I/O processing module is connected to the block machine logic switching and electrical signal output module, and is configured to receive and receive the network packet transmitted by the wireless communication switching and routing module, decode the network packet into a digital block signal, and output the digital block signal to the block machine logic switching and electrical signal output module.
Further, the blocking machine logic switching and electric signal output module comprises a first state switching module, a second state switching module, a third state switching module and a fourth state switching module which are connected in series.
Furthermore, one end of the first state switching module is connected to the ethernet I/O processing module, and the other end of the first state switching module is connected to the interlocking block external connection interface module, so as to implement state switching of the wireless block device in the railway section.
Furthermore, one end of the second state switching module is connected to the ethernet I/O processing module, and the other end of the second state switching module is connected to the signal shaping and optoelectronic isolation module, so as to implement state switching of a blocking signal sent by the interlock control system.
Furthermore, one end of the third state switching module and one end of the fourth state switching module are connected to the ethernet I/O processing module, and the other end of the third state switching module and the other end of the fourth state switching module are connected to other blocking devices, and are configured to send out blocking signals of positive pulses or negative pulses.
Further, the system also comprises a temporary station equipment access detection and logic formation module; the input end of the station-adjacent equipment path detection and logic formation module is connected with a switching power supply, and the output end of the station-adjacent equipment path detection and logic formation module is connected with a signal shaping and photoelectric isolation module and a blocking machine logic switching and electric signal output module, and is used for transmitting a path of power supply signal as a trigger signal to the blocking machine logic switching and electric signal output module so as to activate the blocking machine logic switching and electric signal output module; and the other path of power supply signal is used as a trigger signal of the adjacent station equipment, enters the Ethernet I/O processing module through the signal shaping and photoelectric isolation module, is packaged by the Ethernet I/O processing module and then is transmitted to the wireless communication conversion and routing module to be sent to the adjacent station opposite terminal equipment.
Furthermore, the signal shaping and photoelectric isolation module comprises a signal shaping module and a photoelectric isolation module, the input end of the signal shaping module is connected with the blocking machine logic switching and electric signal output module, and the output end of the signal shaping module is connected with the input end of the photoelectric isolation module and is used for pulse separation and amplification shaping of a blocking signal; the input end of the photoelectric isolation module is also connected with the adjacent station equipment access detection and logic formation module, and the output end of the photoelectric isolation module is connected with the Ethernet I/O processing module and used for performing photoelectric isolation on blocking signals.
The second aspect of the invention provides a working method of a wireless blocking device in a railway section, which comprises the following steps: starting a station adjacent equipment access detection and logic formation module in railway section wireless block equipment of a station, enabling one path of power supply signal as a trigger signal to enter a block machine logic switching and electric signal output module through the station adjacent equipment access detection and logic formation module, activating a first state switching module in the block machine logic switching and electric signal output module, cutting off the input of an interlocking end of an original block machine of an interlocking control system to stop working, and simultaneously accessing a block signal of the interlocking control system into the railway section wireless block equipment of the station to enable the railway section wireless block equipment of the station to enter an 'operating' state; the other path of power supply signal enters the photoelectric isolation module through the adjacent station equipment access detection and logic formation module, enters the Ethernet I/O processing module after photoelectric isolation through the photoelectric isolation module, is transmitted to the wireless communication conversion and routing module as an adjacent station equipment trigger signal after being packaged by the Ethernet I/O processing module, and is transmitted to the wireless communication conversion and routing module corresponding to the railway interval wireless block equipment of the other station through the wireless communication conversion and routing module; the wireless communication conversion and routing module corresponding to the railway section wireless blocking equipment of the other station receives the information and then restores the information into an Ethernet signal packet to be transmitted to the Ethernet I/O processing module, the Ethernet signal packet is unpacked into a digital quantity signal by the Ethernet I/O processing module, the digital quantity signal is transmitted to the blocking machine logic switching and electric signal output module by the Ethernet I/O processing module, and the first state switching module in the blocking machine logic switching and electric signal output module is activated to enable the railway section wireless blocking equipment of the other station to also enter an 'operating' state.
The third aspect of the invention provides a working method of a wireless blocking device in a railway section, which comprises the following steps: the railway section wireless block equipment of a station receives a block signal sent by an interlocking control system of the station through an interlocking block external line connection interface module; the interlocking block external connection interface module transmits a block signal to the block machine logic switching and electric signal output module, and activates a first state switching module and a second state switching module of the block machine logic switching and electric signal output module; the blocking machine logic switching and electric signal output module outputs a blocking signal to the signal shaping module, and the blocking signal is subjected to positive and negative pulse separation and amplification shaping by the signal shaping module and is sent to the photoelectric isolation module; the blocking signal of the digital quantity is formed after the photoelectric isolation module is used for electric isolation and is output to the Ethernet I/O processing module; the Ethernet I/O processing module converts the blocking signals of the digital quantity into network messages, transmits the network messages to the wireless communication conversion and routing module, and wirelessly transmits the network messages to the wireless communication conversion and routing module of the wireless blocking equipment between railway sections of another station through the wireless communication conversion and routing module; the wireless communication conversion and routing module of the railway section wireless blocking equipment of the other station receives the network message and transmits the network message to the Ethernet I/O processing module, the Ethernet I/O processing module decodes the network message to obtain a blocking signal of digital quantity, the blocking signal is transmitted to the blocking machine logic switching and electric signal output module so as to activate the first state switching module and the second state switching module of the blocking machine logic switching and electric signal output module, the blocking signal is transmitted to the interlocking block external line connection interface module through the blocking machine logic switching and electric signal output module, and the interlocking block external line connection interface module transmits the blocking signal to the interlocking control system of the station.
The railway section wireless blocking equipment greatly saves copper cables or optical cable external wires for completing traditional blocking communication, reduces implementation material cost, is beneficial to sustainable development and environmental protection, greatly reduces construction cost of ditching or stringing required by the implementation of the traditional optical cable or cable blocking machine, and reduces the construction cost of the communication external wires far higher than the material cost to zero by the implementation of the wireless communication of the blocking machine.
Drawings
For purposes of illustration and not limitation, the present invention will now be described in accordance with its preferred embodiments, particularly with reference to the accompanying drawings, in which:
fig. 1 is a schematic connection diagram of a wireless block device in a railway section and an interlock control system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a wireless block device for a railway section according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a block machine logic switching and electrical signal output module according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a signal shaping and optoelectronic isolation module according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a temporary station equipment path detection and logic formation module according to an embodiment of the present invention;
FIG. 6 is a block diagram of an Ethernet I/O processing module according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of the logic for electrical connection of a wireless block device for a railway section according to an embodiment of the present invention;
fig. 8 is a schematic diagram of the connection logic of the wireless block device between railway sections of two stations.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a detailed description of the present invention will be given below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.
In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention, and the described embodiments are merely a subset of the embodiments of the present invention, rather than a complete embodiment. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1, the local wireless block device 100 is connected between an existing railway signal computer interlocking control system 200 and other block devices 300. Illustratively, the local wireless block device 100 is connected between the existing railway signal computer interlocking control system 200 and the optical fiber block machine, the local wireless block device 100 can control the state to be a bypass state or an online state, in the online state, the other existing block machines connected behind the local wireless block device 100 are cut off, and the block signaling is transmitted by the local wireless block device 100.
Fig. 2 is a schematic structural diagram of a wireless block device in a railway section according to an embodiment of the present invention. Referring to fig. 1, the wireless block device 100 for a railway section includes an interlocking block external connection interface module 101, a signal shaping and photoelectric isolation module 102, a block logic switching and electric signal output module 103, an ethernet I/O processing module 104, a wireless communication conversion and routing module 105, and a station equipment path detection and logic formation module 106.
The input end of the interlocking block external connection interface module 101 is connected with the existing railway signal computer interlocking control system 200, the output end of the interlocking block external connection interface module 101 is connected with other blocking equipment 300 (which can be an optical fiber blocking machine), and the interlocking block external connection interface module is used for realizing the connection of the railway section wireless blocking equipment 100 with the railway signal computer interlocking control system 200 in the original railway and other blocking equipment 300 and receiving the blocking signal sent by the railway signal computer interlocking control system 200.
The input end of the station-adjacent equipment path detection and logic formation module 106 is connected with a 12V switching power supply, the output end of the station-adjacent equipment path detection and logic formation module 106 is connected with the signal shaping and photoelectric isolation module 102 and the blocking machine logic switching and electric signal output module 103, and the station-adjacent equipment path detection and logic formation module is used for transmitting one path of power supply signal as a trigger signal to the blocking machine logic switching and electric signal output module 103 and activating the blocking machine logic switching and electric signal output module 103; and the other path of power supply signal is used as a trigger signal of the temporary station equipment and is transmitted to the signal shaping and photoelectric isolation module 102.
The input end of the blocking machine logic switching and electric signal output module 103 is connected with the interlocking block external connection interface module 101, the station equipment channel detection and logic forming module 106 and the Ethernet I/O processing module 104; the output end of the blocking machine logic switching and electric signal output module 103 is connected with the signal shaping and photoelectric isolation module 102, and is used for receiving the state switching of sending and receiving of the blocking signals of the railway signal computer interlocking control system 200 through the interlocking block external connection interface module 101, and sending the positive and negative pulses of the blocking signals to the signal shaping and photoelectric isolation module 102.
The input end of the signal shaping and photoelectric isolation module 102 is connected to the output end of the blocking machine logic switching and electric signal output module 103 and the output end of the station equipment channel detection and logic forming module 106, and the output end of the signal shaping and photoelectric isolation module 102 is connected to the ethernet I/O processing module 104, and is configured to receive the blocking signal output by the blocking machine logic switching and electric signal output module 103, perform positive-negative pulse separation and effective pulse identification on the blocking signal, perform electrical isolation, form a digital blocking signal, and output the digital blocking signal to the ethernet I/O processing module 104.
The input end of the ethernet I/O processing module 104 is connected to the signal shaping and photoelectric isolation module 102, and the output end of the ethernet I/O processing module 104 is connected to the blocker logic switching and electrical signal output module 103 and the wireless communication conversion and routing module 105, and is configured to receive a digital blocking signal output by the signal shaping and photoelectric isolation module 102, convert the digital blocking signal into an ethernet packet, and transmit the ethernet packet to the wireless communication conversion and routing module 105; and also used for receiving the network message transmitted by the wireless communication conversion and routing module 105, decoding the network message into a blocking signal with digital quantity, and outputting the blocking signal to the blocking machine logic switching and electric signal output module 103.
The wireless communication conversion and routing module 105 is connected to the ethernet I/O processing module 104, and is configured to receive the network packet output by the ethernet I/O processing module 104 and wirelessly transmit the network packet to the adjacent station device; and is also used for receiving the network message transmitted by the station-adjacent device and transmitting the network message to the ethernet I/O processing module 104.
In some embodiments, the communication mode of the wireless communication module can be selected from one of a 5G mode, a data transmission radio mode, a wireless bridge and other wireless communication modes according to different specific application situations, the mode of the wireless communication module has no influence on the whole logic function of the wireless blocking machine, and the modularized design can ensure that the installed blocking machine is not replaced integrally when the wireless communication mode is changed, thereby avoiding investment waste.
The railway section wireless block equipment provided by the embodiment can be directly inserted between a microcomputer interlocking system and an optical fiber block machine of an original railway, and can be used as emergency block equipment of the original block system when the block machine fails or an external optical cable (cable) fails, equipment in a heat engine state table is switched in from standby for only 1 second, and is started at any end of two railway transportation operation stations which are several to dozens of kilometers away, all equipment in the two stations can be switched in and locked to an operation state, so that the purpose that the equipment is started and operated under the condition that maintenance personnel are not needed to be present in the two stations is achieved, the switching time is shortened, the running efficiency is provided, and the running safety is guaranteed.
Fig. 3 is a schematic structural diagram of a block logic switching and electrical signal output module according to an embodiment of the present invention. The block machine logic switching and electric signal output module mainly completes the control action execution function of the railway section wireless block equipment and is an execution mechanism of control logic. Referring to fig. 3, the blocking machine logic switching and electrical signal output module 103 includes a first state switching module 1031, a second state switching module 1032, a third state switching module 1033, and a fourth state switching module 1034 connected in series.
One end of the first state switching module 1031 is connected to the ethernet I/O processing module 104, and the other end of the first state switching module 1031 is connected to the interlocking block external connection interface module 101, so as to implement "bypass" or "online" state switching of the wireless block device in the railway section.
One end of the second state switching module 1032 is connected to the ethernet I/O processing module 104, and the other end of the second state switching module 1032 is connected to the signal shaping and photoelectric isolation module 102, so as to implement state switching between "sending" and "receiving" of the wireless blocking device in the railway section to the blocking signaling of the railway signal computer interlocking control system 200.
One end of the third state switching module 1033 and one end of the fourth state switching module 1034 are connected to the ethernet I/O processing module 104, and the other end of the third state switching module 1033 and the other end of the fourth state switching module 1034 are connected to other blocking devices 300, so as to implement "positive" and "negative" pulse sending of specific blocking signaling.
The block machine logic switching and electric signal output module provided by the embodiment ensures the interlocking of sending and receiving state switching and the interlocking of sending positive and negative pulses on the relay control logic.
Fig. 4 is a schematic structural diagram of a signal shaping and optoelectronic isolation module according to an embodiment of the present invention. Referring to fig. 4, the signal shaping and optoelectronic isolation module 102 includes a signal shaping module 1021 and an optoelectronic isolation module 1022, an input end of the signal shaping module 1021 is connected to the blocking machine logic switching and electrical signal output module 103, an output end of the signal shaping module 1021 is connected to an input end of the optoelectronic isolation module 1022, an input end of the optoelectronic isolation module 1022 is further connected to the station adjacent device path detection and logic formation module 106, and an output end of the optoelectronic isolation module 1022 is connected to the ethernet I/O processing module 104. The signal shaping module 1021 separates positive and negative pulses of the two-wire system blocking signal from the interlocking device and effectively identifies the pulses, and the output signal is sent to the photoelectric isolation module 1022 for electric isolation, so that no direct electric connection exists between the blocking signal entering the next stage and other devices. The signal shaping and photoelectric isolation module 102 completes the operations of signal amplification and shaping and the like at the same time, and provides a clear and reliable signal for the next stage.
In this embodiment, the signal shaping module 1021 includes a first signal shaping circuit, a second signal shaping circuit and a third signal shaping circuit, the first signal shaping circuit includes a first diode D1 and a fifth diode D5 connected in series, the second signal shaping circuit includes a second diode D2 and a sixth diode D6 connected in series, the third signal shaping circuit includes a third diode D3 and a fourth diode D4 connected in parallel, one end of the third diode D3 and the fourth diode D4 connected in parallel is connected to the first signal shaping circuit through a first RC filter RC1, and one end of the third diode D3 and the fourth diode D4 connected in parallel is connected to the second signal shaping circuit through a second RC filter RC 2.
Fig. 5 is a schematic structural diagram of a temporary station equipment path detection and logic formation module according to an embodiment of the present invention. Referring to fig. 5, an input end of the station-adjacent device path detection and logic formation module 106 is connected to the 12V switching power supply, an output end of the station-adjacent device path detection and logic formation module 106 is connected to the signal shaping and photoelectric isolation module 102, and another output end of the station-adjacent device path detection and logic formation module 106 is connected to the blocker logic switching and electrical signal output module 103. The station adjacent device path detection and logic formation module 106 forms a path detection logic of a station adjacent opposite end device, and also provides a cut-in start pulse signal of the railway interval wireless block device and the station adjacent opposite end device, and a closed-loop monitoring communication channel between two stations after the railway interval wireless block device is started.
The station equipment access detection and logic formation module 106 comprises a first button AN1 and a second button AN2, wherein the first button AN1 is used for activating the block machine logic switching and electric signal output module; a second button AN2 is used to terminate the logic switching and electrical signal output module of the activated obturator.
The temporary station equipment access detection and logic forming module 106 can also cut off the self-protection monitoring access when the equipment at two ends of the temporary station is simultaneously removed from the interlocking system (namely, the railway section wireless blocking equipment and the temporary station equipment are both in a bypass state).
Fig. 6 is a schematic structural diagram of an ethernet I/O processing module according to an embodiment of the present invention. The digital quantity input end of the Ethernet I/O processing module 104 is connected with the signal shaping and photoelectric isolation module 102, the digital quantity output end of the Ethernet I/O processing module 104 is connected with the blocking machine logic switching and electric signal output module 103, and the Ethernet interface end of the Ethernet I/O processing module 104 is connected with the wireless communication conversion and routing module 105. The ethernet I/O processing module 104 is configured to convert the input signal of the digital quantity into an ethernet packet, and transmit the ethernet packet to the wireless communication conversion and routing module 105, and also decode the network packet from the wireless communication conversion and routing module 105 into a digital quantity output signal, and output the digital quantity output signal to the blocker logic switching and electrical signal output module 103. The module is realized by a high-performance industrial MCU or PLC. The module is a core module of the whole system. The program in the module is an industrial control level quasi-real-time program.
Fig. 7 is a schematic diagram of an electrical connection logic of a wireless block device in a railway section according to an embodiment of the present invention.
Referring to fig. 7, the process of the switch-in/switch-out operation of the radio block equipment in the railway section is as follows:
in the initial state, the railway section wireless block equipment of the two stations is electrified and enters the waiting state. After any station presses the first button AN1 of the station adjacent equipment path detection and logic formation module 106 in the railway section wireless block equipment of the station, the 12V + power enters from the input port 0 of the station equipment passage detection and logic forming module 106, passes through AN AN1 button and AN AN2 button, enters from the second output port 2 of the station equipment passage detection and logic forming module 106, enters the first input port 1 of the blocking machine logic switching and electric signal output module 103, activates the J1 action of the first state switching module 1031 in the blocking machine logic switching and electric signal output module 103, cuts off the interlocking end input of the original blocking machine of the interlocking system to stop working, meanwhile, a blocking signal (which is a 64D/64F level standard) of the interlocking system is accessed to the railway section wireless blocking equipment, so that the railway section wireless blocking equipment of the station enters an 'operating' state.
The 12V + power supply passing through the AN1 button of the station equipment path detection and logic formation module 106 enters the first input port I1 of the optoelectronic isolation module 1022 from the first output port 1 of the station equipment path detection and logic formation module 106, then enters the first input port I1 of the ethernet I/O processing module 104 from the first output port O1 of the optoelectronic isolation module 1022, is transmitted to the wireless communication conversion and routing module 105 through the network port Lan of the ethernet I/O processing module 104 after being encapsulated by the ethernet, and is transmitted to the wireless communication conversion and routing module 105 corresponding to the wireless block equipment in the railway section of another station through the radio wave.
After receiving the information, the wireless communication conversion and routing module 105 corresponding to the wireless block device in the railway section of another station restores the information into an ethernet packet, transmits the ethernet packet to the network port Lan of the ethernet I/O processing module 104, unpacks the ethernet packet into a digital quantity, and transmits the digital quantity from the first output port O1 of the ethernet I/O processing module 104 to the first input port 1 of the block machine logic switching and electrical signal output module 103, activates the J1 action of the first state switching module 1031 in the block machine logic switching and electrical signal output module 103 of the wireless block device in the railway section of the station, so that the wireless block device in the railway section of another station also enters an "operating" state.
After the wireless block device in the railway section of another station also enters the "running" state, the J1 of the first state switching module 1031 in the block machine logic switching and electrical signal output module 103 is activated to act, the J1 action signal of the first state switching module 1031 is sent back to the first input port I1 of the photoelectric isolation module 1022 through the second output port 2, the second button AN2 and the first output port 1 of the adjacent station device path detection and logic formation module 106, then is transmitted to the first port I1 of the ethernet I/O processing module 104 through the first output port O1 of the photoelectric isolation module 1022, is transmitted to the wireless communication conversion and routing module 105 through the network port Lan of the ethernet I/O processing module 104 of another station, and finally is transmitted to the wireless block device in the railway section of the station through the ethernet I/O processing module 104 of the wireless block device in the railway section of another station, and closed-loop self-protection is realized.
At this time, even if the local station railway section wireless blocking device releases the first button AN1 of the adjacent station device access detection and logic forming module 106 in the other station railway section wireless blocking device, the railway section wireless blocking devices of both stations are still in the running state. Therefore, the closed-loop mutual detection of the states of the wireless block equipment in the railway sections of the two stations is realized, and the wireless block equipment in the railway section of the other station can automatically run and return the working state to the local wireless block equipment in the railway section under the unattended condition.
If a pair of railway section wireless block devices of which two stations are in a running state needs to be set to a standby state, the self-protection loop established by the two railway section wireless block devices of the two stations can be cut off by pressing a second button AN2 of the adjacent station device path detection and logic forming module 106 by any one of the two stations, so that the two block devices return to a bypass state, the railway section wireless block devices are cut out from AN original railway signal interlocking control system, and the original block machine in the interlocking system obtains working signals to restore work.
As shown in fig. 8, the following describes the operation and response processing procedures of the machine a and the machine B, taking the example that the machine a receives a positive polarity signaling pulse sent by the interlock device, and the railway section radio block device of the local station is the machine a, and the railway section radio block device of the adjacent station is the machine B.
Taking the example that the machine a receives the positive polarity signaling pulse sent by the interlocking device, the action and response processing procedures of the machine a and the machine B are as follows:
after the machine A and the machine B are powered on and enter the running state, the machine A and the interlocking control equipment of the station A send out positive blocking pulse signaling. The positive blocking pulse signaling + signal is sent to the terminal 12 of the first state switching module 1031 in the blocking machine logic switching and electrical signal output module 103, and the signal is sent to the terminal 15 of the first state switching module 1031 in the blocking machine logic switching and electrical signal output module 103.
At this time, since the a unit is in the operating state, the J1 of the first state switching module 1031 in the blocking unit logic switching and electrical signal output module 103 is in the operating state; one path of the + signal is switched through the blocking machine logic, and the terminal 12 and the terminal 11 of the first state switching module 1031, the terminal 22 and the terminal 23 of the second state switching module 1032, the first input port 1 of the signal shaping module 1021, the first diode D1 and the fifth diode D5 connected in series in the signal shaping module 1021, the second input terminal I2 of the photoelectric isolation module 1022, the second output terminal O2 of the photoelectric isolation module 1022, and the second input terminal I2 of the ethernet I/O processing module 104 in the electrical signal output module 103; the other path of the signal passes through a first diode D1 in the signal shaping module 1021 and then reaches a third input terminal I3 of the optoelectronic isolation module 1022, a third output terminal O3 of the optoelectronic isolation module 1022, and a third input terminal I3 of the ethernet I/O processing module 104; then, the wireless communication conversion and routing module 105 is sent to the wireless communication conversion and routing module corresponding to the B-machine at the opposite end of the adjacent station through the radio wave from the network port Lan of the ethernet I/O processing module 104.
The electrical circuit of the a machine blocking signal is a positive polarity blocking pulse signaling-signal input point from the output end GND24 of the signal shaping module 1021, the fourth diode D4 of the signal shaping module 1021, the second input end 2 of the signal shaping module 1021, the point 26 and the point 25 of the second state switching module 1032 in the blocking machine logic switching and electrical signal output module 103, and the point 14 of the first state switching module 1031 back to the point 15 of the first state switching module 1031.
At this time, the B engine is also in the operating state, and J1 of the first state switching module 1031 is also in the activated state; after the wireless communication conversion and routing module of the B-machine receives and decodes the information of the a-machine, the + signals are simultaneously output from the second output end O2 and the third output end O3 of the ethernet I/O processing module 104, and the J2 of the first state switching module 1031 and the J3 of the second state switching module 1032 in the block machine logic switching and electrical signal output module 103 are activated. The special power supply + for the external line of the blocking machine is transmitted to the B station interlocking control system through a point 31 of a third state switching module 1033 in the blocking machine logic switching and electrical signal output module 103, a point 32 of the third state switching module 1033, a point 21 and a point 22 of a second state switching module 1032, a point 11 and a point 12 of a first state switching module 1031.
The electrical loop of the B machine blocking signal is that the point 15 and the point 14 of the first state switching module 1031, the point 25 and the point 24 of the second state switching module 1032, the point 35 and the point 34 of the third state switching module 1033 in the block machine logic switching and electrical signal output module 103 return to the power supply-dedicated for the block machine external line.
The negative polarity signaling pulse transmission process is similar and will not be repeated.
The railway section wireless blocking equipment greatly saves copper cables or optical cable external wires for completing traditional blocking communication, reduces implementation material cost, is beneficial to sustainable development and environmental protection, greatly reduces construction cost of ditching or stringing required by the implementation of the traditional optical cable or cable blocking machine, and reduces the construction cost of the communication external wires far higher than the material cost to zero by the implementation of the wireless communication of the blocking machine.
The wireless block equipment in the railway section uses wireless communication, so that the influence on the normal use of the equipment caused by the accidental damage in the traditional outside line is reduced to zero, unsafe factors brought to railway transportation production are eliminated, the production safety is ensured, and other safety problems caused by the adverse factors such as field mountain and high road insurance in the process of rush repair of the fault of the outside line to rush repair personnel are eliminated.
The railway interval wireless block equipment has the functions of fault detection and indication of the equipment at the opposite end of the adjacent station, great convenience is brought to system maintenance personnel, the fault position can be quickly positioned when the fault occurs, the fault repair time is shortened, the influence of the block system equipment on railway transportation production is greatly reduced, and the running efficiency of transportation operation is effectively improved.
The above-described embodiments should not be construed as limiting the scope of the invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions can occur, depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A wireless block device for a railway section, comprising: the interlocking block external connection interface module, the block machine logic switching and electric signal output module, the signal shaping and photoelectric isolation module, the Ethernet I/O processing module and the wireless communication conversion and routing module;
the input end of the interlocking block external connection interface module is connected with an interlocking control system and used for receiving a block signal sent by the interlocking control system and simultaneously completing the protection of external line lightning or other overvoltage and overvoltage invasion;
the input end of the blocking machine logic switching and electric signal output module is connected with the interlocking block external connection interface module, and the output end of the blocking machine logic switching and electric signal output module is connected with the signal shaping and photoelectric isolation module and is used for receiving a blocking signal of a railway signal computer interlocking control system and sending the blocking signal to the signal shaping and photoelectric isolation module;
the input end of the signal shaping and photoelectric isolation module is connected with the output end of the blocking machine logic switching and electric signal output module, and the output end of the signal shaping and photoelectric isolation module is connected with the Ethernet I/O processing module and is used for receiving the blocking signal output by the blocking machine logic switching and electric signal output module, carrying out positive and negative pulse separation and amplification shaping on the blocking signal, forming a digital blocking signal and outputting the digital blocking signal to the Ethernet I/O processing module;
the input end of the Ethernet I/O processing module is connected with the signal shaping and photoelectric isolation module, and the output end of the Ethernet I/O processing module is connected with the wireless communication conversion and routing module and is used for receiving the digital blocking signal output by the signal shaping and photoelectric isolation module, converting the digital blocking signal into a network message and transmitting the network message to the wireless communication conversion and routing module; the wireless communication conversion and routing module is used for wireless transmission of communication messages.
2. The inter-railway-section wireless blocking device according to claim 1, wherein an input end of the ethernet I/O processing module is further connected to the wireless communication switching and routing module, and an output end of the ethernet I/O processing module is connected to the blocking machine logic switching and electrical signal output module, and is configured to receive the network packet transmitted by the wireless communication switching and routing module, decode the network packet into a blocking signal of a digital quantity, and output the blocking signal to the blocking machine logic switching and electrical signal output module.
3. The wireless block device for railway sections according to claim 1, wherein the block machine logic switching and electric signal output module comprises a first state switching module, a second state switching module, a third state switching module and a fourth state switching module which are connected in series.
4. The railway section wireless block device according to claim 3, wherein one end of the first state switching module is connected to the Ethernet I/O processing module, and the other end of the first state switching module is connected to the interlocking block external line connection interface module, so as to implement state switching of the railway section wireless block device.
5. The railway section wireless blocking device according to claim 3, wherein one end of the second state switching module is connected to the Ethernet I/O processing module, and the other end of the second state switching module is connected to the signal shaping and photoelectric isolation module, so as to realize state switching of a blocking signal sent by the interlock control system.
6. The wireless block device between railway sections according to claim 3, wherein one end of the third state switching module and one end of the fourth state switching module are connected to the Ethernet I/O processing module, and the other end of the third state switching module and the other end of the fourth state switching module are connected to other block devices, and are configured to send out a block signal of a positive pulse or a negative pulse.
7. The inter-railway-section wireless blocking device of claim 1, further comprising a station adjacent device path detection and logic formation module; the input end of the station-adjacent equipment path detection and logic formation module is connected with a switching power supply, and the output end of the station-adjacent equipment path detection and logic formation module is connected with a signal shaping and photoelectric isolation module and a blocking machine logic switching and electric signal output module, and is used for transmitting a path of power supply signal to the blocking machine logic switching and electric signal output module to be used as a trigger signal to activate the blocking machine logic switching and electric signal output module; and the other path of power supply signal enters the Ethernet I/O processing module through the signal shaping and photoelectric isolation module, is packaged by the Ethernet I/O processing module and then is transmitted to the wireless communication conversion and routing module as a station-adjacent equipment trigger signal to be sent to the station-adjacent opposite terminal equipment.
8. The railway section wireless blocking device according to claim 7, wherein the signal shaping and photoelectric isolation module comprises a signal shaping module and a photoelectric isolation module, an input end of the signal shaping module is connected with the blocking machine logic switching and electric signal output module, and an output end of the signal shaping module is connected with an input end of the photoelectric isolation module and is used for pulse separation and amplification shaping of blocking signals; the input end of the photoelectric isolation module is also connected with the adjacent station equipment access detection and logic formation module, and the output end of the photoelectric isolation module is connected with the Ethernet I/O processing module and used for performing photoelectric isolation on blocking signals.
9. An operating method of a wireless blocking device for a railway section is characterized by comprising the following steps:
starting a station adjacent equipment access detection and logic formation module in railway section wireless block equipment of a station, enabling one path of power supply signal to enter a block machine logic switching and electric signal output module through the station adjacent equipment access detection and logic formation module to be used as a trigger signal to activate a first state switching module in the block machine logic switching and electric signal output module, cutting off the input of an interlocking end of an original block machine of an interlocking control system to stop working, and simultaneously accessing a block signal of the interlocking control system into the railway section wireless block equipment of the station to enable the railway section wireless block equipment of the station to enter an 'operating' state; the other path of power supply signal enters the photoelectric isolation module through the adjacent station equipment channel detection and logic formation module, enters the Ethernet I/O processing module after photoelectric isolation through the photoelectric isolation module, is transmitted to the wireless communication conversion and routing module as an adjacent station equipment trigger signal after being packaged by the Ethernet I/O processing module, and is transmitted to the wireless communication conversion and routing module corresponding to the railway section wireless block equipment of the other station through the wireless communication conversion and routing module;
the wireless communication conversion and routing module corresponding to the railway section wireless blocking equipment of the other station receives the information and then restores the information into an Ethernet signal packet to be transmitted to the Ethernet I/O processing module, the Ethernet signal packet is unpacked into a digital quantity signal by the Ethernet I/O processing module, the digital quantity signal is transmitted to the blocking machine logic switching and electric signal output module by the Ethernet I/O processing module, and the first state switching module in the blocking machine logic switching and electric signal output module is activated to enable the railway section wireless blocking equipment of the other station to also enter an 'operating' state.
10. An operating method of a wireless blocking device for a railway section is characterized by comprising the following steps:
the railway section wireless blocking equipment of a station receives a blocking signal sent by an interlocking control system of the station through an interlocking block external line connection interface module; the interlocking block external connection interface module transmits a block signal to the block machine logic switching and electric signal output module, and activates a first state switching module and a second state switching module of the block machine logic switching and electric signal output module; the blocking machine logic switching and electric signal output module outputs a blocking signal to the signal shaping module, and the blocking signal is subjected to positive and negative pulse separation and amplification shaping by the signal shaping module and is sent to the photoelectric isolation module; the blocking signal of the digital quantity is formed after the photoelectric isolation module is used for electric isolation and is output to the Ethernet I/O processing module; the Ethernet I/O processing module converts the blocking signals of the digital quantity into network messages, transmits the network messages to the wireless communication conversion and routing module, and wirelessly transmits the network messages to the wireless communication conversion and routing module of the wireless blocking equipment between railway sections of another station through the wireless communication conversion and routing module;
the method comprises the steps that a wireless communication conversion and routing module of railway section wireless blocking equipment of another station receives a network message and then transmits the network message to an Ethernet I/O processing module, the Ethernet I/O processing module decodes the network message to obtain a blocking signal of a digital quantity, the blocking signal is transmitted to a blocking machine logic switching and electric signal output module to activate a first state switching module and a second state switching module of the blocking machine logic switching and electric signal output module, the blocking signal is transmitted to an interlocking blocking external line connection interface module through the blocking machine logic switching and electric signal output module, and the interlocking blocking external line connection interface module transmits the blocking signal to an interlocking control system of the station.
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