CN112693495B - Node-free distributed turnout safety driving control system - Google Patents
Node-free distributed turnout safety driving control system Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L7/00—Remote control of local operating means for points, signals, or track-mounted scotch-blocks
- B61L7/06—Remote control of local operating means for points, signals, or track-mounted scotch-blocks using electrical transmission
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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
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Abstract
The invention belongs to the field of switch safety driving control systems, and particularly discloses a node-free distributed switch safety driving control system. The turnout safety driving and mining control system comprises an intelligent power module, a safety logic operation module and a node-free driving and mining module; the intelligent power module is used for providing power; the safety logic operation module is used for controlling logic processing operation in the system; the safety logic operation module is communicated with the node-free driving and collecting module through a bus; the non-node driving and collecting module is communicated with the trackside equipment to realize driving and collecting. The invention can directly control the equipment beside the road gate through the distributed turnout driving and collecting control system, and the whole system adopts a relay structure every day, so that the whole system has smaller volume, lower cost and higher flexibility.
Description
Technical Field
The invention belongs to the field of switch safety driving control systems, and particularly relates to a node-free distributed switch safety driving control system.
Background
The turnout trackside equipment is an important component in a railway system and mainly comprises a shaft, a switch machine, a signal machine, a rail machine and track circuit equipment. In practical application, the axle counting is mainly used for detecting the track occupation state and identifying the running direction of the train; the switch machine is mainly used for executing driving commands and completing switch position conversion; the annunciator is mainly used for indicating the running condition of the train and completing the driving task; the rail gate machine is mainly used for ensuring that a train normally passes through a railway crossing and ensuring the safety of pedestrians and vehicles; the track circuit is mainly used for detecting whether a train passes through a fork section, whether a track is occupied or not and whether a steel rail is intact or not. Therefore, in order to ensure driving safety, it is important to realize safe driving and acquisition control of the trackside equipment.
At present, most of the existing railway signal control systems adopt a centralized control mode, the influence range is larger when the key parts of the existing railway signal control systems are in faults, and the faults possibly cause paralysis of the whole control system. With the continuous improvement of communication technology, the distributed computer control system can directly control the trackside equipment, and the distributed computer interlocking control system at present adopts a relay structure, so that the system has the defects of huge volume, high cost, poor system flexibility and the like. In order to meet the miniaturization requirement of the trackside control system, the research of the node-free trackside equipment safety driving control system with the miniaturization and distributed trackside control function has important significance.
Disclosure of Invention
Aiming at the problems, the invention discloses a node-free distributed switch safe driving control system, wherein the switch safe driving control system comprises an intelligent power module, a safe logic operation module and a node-free driving module;
the intelligent power module is used for providing power;
the safety logic operation module is used for controlling logic processing operation in the system;
the safety logic operation module is communicated with the node-free driving and collecting module through a bus;
the non-node driving and collecting module is communicated with equipment beside the barrier gate to realize driving and collecting.
Furthermore, the switch safety control system is of a two-by-two structure, and is divided into an I system and an II system, wherein the two systems are operated in a main and standby mode, and are switched through a switching module.
Further, each system of the safety logic operation module comprises three independent CPU0, CPU1 and CPU2 units;
the CPU0 and the CPU1 units perform two-by-two comparison, and the CPU2 unit provides a maintenance and detection communication interface for the switch safety driving control system.
Further, CPU0 and CPU1 are compiled using different compilers, and CPU2 is compiled using the same compiler as CPU0 or CPU 1.
Furthermore, the switching module is safely designed into a fault-safety principle structure.
Further, the node-free driving and collecting module comprises a logic control board and a functional board.
Further, the functional board includes a high power density power conversion circuit, which is built up from power electronics.
Furthermore, the node-free driving and collecting module takes the single-phase 220V alternating current output by the intelligent power supply module as input power, and converts the single-phase 220V alternating current through the voltage conversion circuit.
Furthermore, the switch safety driving control system adopts a PLC type or cage type structure.
Furthermore, the intelligent power module adopts dual power supply to supply power and output.
Advantageous effects
1) The invention can directly control the track side equipment by adopting the distributed turnout safety driving control system.
2) The turnout safety control system adopts a two-by-two structure, and the double system operates in a main and standby mode, so that the reliability of equipment can be improved.
3) The safety logic module comprises three independent CPUs, wherein the CPU0 and the CPU1 perform two-by-two comparison and are compiled by different compilers, so that the operation process is more stable and more accurate.
4) The non-node driving and collecting module consists of a logic control board and a functional board, and when the functional board needs to be replaced, the functional board is directly replaced, so that the universality of the system is stronger.
5) The functional board includes a high power density power conversion circuit that is built from power electronics. Avoid using components such as relay for equipment miniaturization more, area is littleer.
6) The turnout safety driving system adopts a PLC type or cage type structure, so that the whole system is more compact, and equipment replacement is more convenient.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 shows a block diagram of a switch safety drive control system in accordance with an embodiment of the present invention;
FIG. 2 illustrates a hierarchical block diagram of a switch safety drive control system in accordance with an embodiment of the present invention;
FIG. 3 shows a two-by-two block diagram of a switch safety drive control system in accordance with an embodiment of the present invention;
FIG. 4 shows a block diagram of the connection of the switching module to the safety logic operation module;
fig. 5 shows a block diagram of the internal structure of the node-less flooding module.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention discloses a node-free distributed switch safety driving control system, and fig. 1 shows a structural diagram of the switch safety driving control system. As shown in fig. 1, the switch safety driving control system receives a control command issued by a remote operation center through an optical cable or a wireless communication remote operation center, and simultaneously feeds back the working state information of each switch to a remote monitoring center to realize real-time monitoring and control of the switch by the remote operation center. The switch safety driving and collecting control system is in bidirectional communication with the track side equipment, so that the driving and collecting of the multiple switch side equipment are realized.
Fig. 2 shows a hierarchical block diagram of the switch safety drive control system. As shown in FIG. 2, the switch safety driving control system comprises a man-machine interaction layer, a logic operation layer, an execution representation layer and an actual working layer.
Specifically, the man-machine interaction layer comprises a remote operation center and a remote monitoring center. The remote operation center and the remote monitoring center are communicated with each other, the remote operation center uses information received by the remote monitoring center as reference basis, and the remote monitoring center verifies the instruction effect sent by the remote operation center.
Specifically, the logic operation layer comprises a safety logic operation module, the execution expression layer comprises a node-free drive and acquisition module, and the intelligent power supply module provides power for the safety logic operation module and the execution expression module. The safety logic operation module receives a control command issued by the man-machine interaction layer, performs logic processing operation inside the safety logic operation module, and transmits a driving command to the non-node driving and collecting module through an internal bus, and is used for directly driving and collecting the working state of the turnout trackside equipment. The working state information comprises maintenance information such as voltage, current, positioning and repositioning of the rotating shaft machine, signal state, section state and the like, so that the anti-interference capability and lightning protection performance of the system are improved, and the system is ensured to have high stability in operation. Preferably, all the turnout safety driving control systems of the trackside different stations are communicated with each other through optical cables and wireless, so that driving safety is ensured.
The intelligent power module provides stable and reliable direct current power supply for the whole turnout safety driving control system. The intelligent power supply module takes single-phase 220V alternating current as input electricity, voltage values of different grades can be output according to actual needs through the voltage conversion circuit, no relay is adopted between the whole strong current and weak current of the driving and collecting module, the risk of the whole system is reduced due to the fact that no relay is adopted, the size of a system hardware circuit is reduced, the purposes of node-free, low-cost, safe and reliable trackside control of the turnout safety driving and collecting control system can be achieved, and the intelligent power supply module has wider application prospect. The intelligent power supply module is exemplified by an alternating current 220V power supply beside a rail, and the intelligent power supply module outputs stable alternating current 220V or direct current 24V power supply. The output direct current 24V is used for providing a direct current low-voltage working power supply for the safety logic operation module, the switching module and the node-free driving and collecting module. The output alternating current 220V provides strong current input power for the node-free driving and collecting module, and provides energy for driving and collecting modules such as different types of switches and annunciators, for example, 160V direct current switches driving and collecting module, 220V alternating current switches driving and collecting module, 380V alternating current switches driving and collecting module, 48V direct current annunciator driving and collecting module, 220V alternating current annunciator driving and collecting module and the like. Preferably, the intelligent power supply module adopts dual power supply output, and when any power supply fails, the intelligent power supply module is quickly switched to standby power supply. Furthermore, the intelligent power supply module can monitor the power quality, alarm faults, display the power supply voltage and the current temperature for the power supply input and output in real time, and transmit data to a remote monitoring center for real-time monitoring of equipment maintenance personnel.
Specifically, the safety logic operation module comprises three independent units of CPU0, CPU1 and CPU 2. The COU0 and the CPU1 units perform two-by-two comparison, only two operation results can be output outwards all the time, the CPU2 units provide a maintenance and detection communication interface of the switch safety driving control system, system state data can be sent to a remote monitoring center, and meanwhile a log storage function can be realized. And two safe CPUs of the CPU0 and the CPU1 are compiled by different compilers, and the CPU2 can be compiled by the same compiler as the CPU0 or the COU1, so that the compiler can be effectively prevented from generating resonance errors, and the system has higher safety.
Specifically, as shown in fig. 3, the switch safety driving control system has a two-by-two structure, and is divided into an I-series safety logic operation module and an II-series safety logic operation module, which are hereinafter abbreviated as I-series and II-series respectively. The hardware circuits of the I system and the II system are completely consistent, and can independently complete corresponding work. The I system and the II system are operated in a main and standby mode. Typically, the system I is the master system and the system II is the standby system under normal conditions. When the I system detects serious faults, the I system is lowered and the II system is raised, so that the normal operation of the system is ensured, and the reliability of the system is improved. The I system and the II system can judge the working state of the main and the standby through the communication between the systems and the switching module together, so that the safe operation of the system is ensured. The switch safety driving control system realizes the minimum safety logic control double-system safety function by an intelligent power module, a safety logic operation module and a switching module, and can increase the functional requirements on the basis according to different functional requirements. For example, when the driving and mining work of the 380V alternating current switch machine is required to be realized, an intelligent power module, a safety logic operation module, a switching module and a node-free driving and mining module are adopted. The intelligent power supply module comprises an I-system intelligent power supply module and an II-system intelligent power supply module, the safety logic operation module comprises an I-system safety logic operation module and an II-system safety logic operation module, and the non-node driving and collecting module comprises an I-system non-node driving and collecting module and an II-system non-node driving and collecting module.
The intelligent I-system power module provides power for the node-free I-system driving and collecting module, specifically, the node-free I-system driving and collecting module comprises an I-system switch machine driving and collecting module, the intelligent I-system power module outputs 380V to provide required voltage for the I-system switch machine driving and collecting module, and the I-system switch machine driving and collecting module collects and drives states of the switch machines. And the II-series intelligent power supply module provides power for the II-series non-node driving and collecting module. Specifically, the II-type node-free driving and collecting module comprises a II-type switch machine driving and collecting module, the output of the II-type intelligent power module is 380V, required voltage is provided for the II-type switch machine driving and collecting module, and the II-type switch machine driving and collecting module is used for collecting and driving the state of the switch machine. The switching module is connected with the safety logic operation module and the intelligent power module respectively and is used for switching and controlling the safety logic operation module and the intelligent power module respectively. And the same driving and simultaneous mining are realized through the I-system non-node driving and mining module and the II-system non-node driving and mining module, and the self-checking is output. The safety logic operation module is communicated with the non-node driving and collecting module through an internal bus, the non-node driving and collecting module realizes external communication, external output and external input, a switch is not needed, the whole switch safety driving and collecting system is convenient to install, simple to operate, convenient for field personnel to maintain and detect, and compared with all-electronic equipment, the switch safety driving and collecting system is miniaturized in a real sense, does not have nodes and is built by using electronic elements.
The switch machine driving and collecting module can detect and monitor output voltage and current signals in real time, meanwhile, the current working state of the switch machine is a positioning state, a reverse position state or a tearing state, the output is automatically stopped after the switch machine is in place, and monitoring data are uploaded to a remote monitoring center in real time. The switch machine driving and collecting module also has IO driving and collecting functions, can collect the working states of the switch machine nodes, the mechanical switch and the hand crank in real time, and can obtain the current working state of the switch machine through IO collecting the node states when the switch machine shows that the circuit is bad, so that the safe driving and collecting functions of the switch machine are ensured, and the driving safety is ensured.
Further, fig. 4 shows a block diagram of the connection of the switching module to the secure logic operation. As shown in fig. 4, the switching module is designed safely as a fail-safe principle structure. The switching module is respectively connected with the I-series safety logic operation module and the II-series safety logic operation module, and the connection relations are the same. The switching module comprises a logic conversion circuit, a dynamic level conversion circuit and a dynamic stoping circuit. CPU0 and CPU1 in the I-series safety logic operation module and the II-series safety logic operation module respectively send a dynamic IO signal to the switching module, the switching module receives two groups of IO signals and then respectively obtains working states of the I-series safety logic operation module and the II-series safety logic operation module through the dynamic level conversion circuit, and the state information is sent to the logic conversion circuit for judgment. The default I is the main system and the II is the backup system. If and only if the master system has a problem, the output state of the logic circuit is changed, and state latching and system switching state output are carried out. After the CPU0 and the PCU1 of the I-system safety logic operation module and the II-system safety logic operation module acquire the output dynamic state of the logic conversion circuit through the dynamic acquisition circuit, the CPU0 and the CPU1 interact to judge the respective main and standby states and perform cut-system output.
Preferably, the node-less flooding module provides a plurality of external interfaces. The interfaces are, for example, CAN, RS-422/485 and Ethernet communication interfaces, and the node-less flooding module also provides standard application software interfaces for different applications. The whole non-node driving and collecting module is more compact in structure and more comprehensive in function. Fig. 5 shows a block diagram of the internal structure of the node-less flooding module, as shown in fig. 5. Each driving and collecting module comprises a logic control board and a functional board. The logic control board comprises two independent CPU units, the two CPUs are used for comparing the acquired results, the acquired data are considered to be valid by comparison, otherwise, the acquired data are invalid, when one CPU control signal output is invalid, the total output is invalid, and two-out-of-two fault-safety output with different hardware is formed, so that the system has higher safety; the functional board is a high-power density power conversion circuit built by power electronics, and is used without a relay. The logic control board receives the driving command issued by the upper layer safety logic operation unit to perform logic processing, and then sends the driving command to the corresponding functional board to perform driving output. The hardware structure of the logic control boards of all driving and collecting modules of the node-free driving and collecting module is consistent, different trackside devices are only required to be equipped with corresponding functional boards, if hardware upgrade is carried out at a later stage, only the functional boards are required to be upgraded, the logic control boards are not required to be changed, and the flexibility and the expansibility are strong.
Although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. A node-free distributed turnout safety driving control system is characterized in that,
the turnout safety driving control system is of a two-by-two structure and is divided into an I system and an II system; the hardware circuits of the I system and the II system are consistent and can work independently; the dual system operates in a main-standby mode, and the main system and the standby system are switched by a switching module;
the switch safety driving control system I system and the switch safety driving control system II system respectively comprise an intelligent power module, a safety logic operation module and a node-free driving module;
the intelligent power module is used for providing power;
the safety logic operation module is used for controlling logic processing operation in the system;
the safety logic operation module is communicated with the node-free drive acquisition module through a bus without a switch;
the non-node driving and collecting module is communicated with the equipment beside the barrier gate to realize driving and collecting;
the strong current and the weak current of the non-node driving and collecting module are controlled in a relay-free mode;
the safety logic operation module comprises three independent units of CPU0, CPU1 and CPU 2;
the CPU0 and the CPU1 units perform two-by-two comparison, and the CPU2 unit provides a maintenance and detection communication interface of the switch safety driving control system;
the CPU0 and the CPU1 are compiled by different compilers, and the CPU2 is compiled by the same compiler of the CPU0 or the CPU 1;
the switching module is safely designed into a fault-safety principle structure; the switching module is respectively connected with the I-series safety logic operation module and the II-series safety logic operation module, and the connection relations are the same; the switching module comprises a logic conversion circuit, a dynamic level conversion circuit and a dynamic stoping circuit;
when the switching module monitors the state, the switching module receives two groups of IO signals sent by the CPU0 and the CPU1 in the I-series and II-series safety logic operation modules, then the working states of the I-series safety logic operation module and the II-series safety logic operation module are respectively obtained through the dynamic level conversion circuit, and the state information is sent to the logic conversion circuit for judgment;
if and only if the main system has a problem, the output state of the logic conversion circuit is changed, state latching is carried out, and the system cutting state is output; CPU0 and CPU1 of the I and II safety logic operation modules acquire the output dynamic state of the logic conversion circuit through the dynamic extraction circuit, and then the CPU0 and CPU1 interact to judge the respective main and standby states and perform cut-line output.
2. The switch safety drive control system of claim 1, wherein,
the node-free driving and collecting module comprises a logic control board and a functional board.
3. The switch safety drive control system of claim 2, wherein,
the functional board includes a high power density power conversion circuit that is built from power electronics.
4. The switch safety drive control system of claim 2, wherein,
the node-free driving and collecting module takes the single-phase 220V alternating current output by the intelligent power supply module as input power, and converts the input power through the voltage conversion circuit.
5. The switch safety drive control system of claim 1, wherein,
the switch safety driving control system adopts a PLC type or cage type structure.
6. The switch safety drive control system of claim 1, wherein,
the intelligent power module adopts dual power supply to supply power and output.
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113184023B (en) * | 2021-05-13 | 2023-02-28 | 浙江众合科技股份有限公司 | Novel turnout zone control system capable of supporting train autonomous control |
| CN114194247A (en) * | 2021-11-12 | 2022-03-18 | 卡斯柯信号有限公司 | System and method for controlling 46-line turnout at trackside in plateau outdoor environment |
| CN114475701B (en) * | 2022-01-07 | 2024-01-19 | 北京全路通信信号研究设计院集团有限公司 | Distributed turnout control system for rail vehicle |
| CN115158402A (en) * | 2022-07-05 | 2022-10-11 | 河南思维自动化设备股份有限公司 | Programmable logic control system and control method for subway train |
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| 基于全电子的有轨电车正线道岔控制系统研究;贾斌;《铁路通信信号工程技术》;20200125;第17卷(第01期);第38-44页 * |
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| CN112693495A (en) | 2021-04-23 |
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