Hot standby redundant LEU system and equipmentTechnical Field
The disclosure belongs to the technical field of railway signals, and particularly relates to a hot standby redundancy LEU system and equipment.
Background
LEU (Lineside Electronic Unit, ground electronic unit) is important ground equipment in the train advancing process, and the train control center sends message information to the active transponder through LEU, reads real-time information through the active transponder through the train.
LEU among the prior art adopts the hardware design framework of "integrated circuit board + cage + rack", and functional class integrated circuit board generally includes main control board, monitoring board, output board, switching board, and all kinds of functional board pass through the backplate and carry out information interaction, and functional board and backplate need install at first in the cage, load into the rack with the cage again, and this kind of scheme integrated level is low, and equipment is bulky, installs complicacy. Furthermore, the LEU power supply cable and the communication cable in the prior art are independent from each other, and the cable laying cost is high.
Disclosure of Invention
In order to solve the problems, the disclosure provides a hot standby redundant LEU system and equipment, which comprises two LEU subsystems, wherein each subsystem comprises a circuit module and a power supply communication module, all units in the circuit module are integrated on the same printed circuit board, the power supply communication module receives a power supply signal and an input signal through an input cable, so that the occupied volume of the LEU system and the equipment is reduced, and the number of the cables is reduced.
The invention is realized by the following technical scheme:
In a first aspect, embodiments of the present disclosure provide a hot standby redundant LEU system, the system including a first LEU subsystem, a second LEU subsystem, and a switching module;
the first LEU subsystem comprises a first circuit module and a first power supply communication module, wherein the first power supply communication module receives a power supply signal and a first input signal through a first input cable;
the second LEU subsystem comprises a second circuit module and a second power supply communication module, the second power supply communication module receives a power supply signal and a second input signal through a second input cable, the second power supply communication module supplies power to the second circuit module and transmits the second input signal,
The first power supply communication module is electrically connected with the second circuit module, and the first power supply communication module sends a first input signal to the second circuit module;
The first circuit module sends a first output signal to the switching module, the second circuit module sends a second output signal to the switching module, and the switching module sends the first output signal or the second output signal to the active transponder through the output cable.
Further, the method comprises the steps of,
The first circuit module comprises a first monitoring unit, a first main control unit and a first output unit, and the first main control unit is electrically connected with the first output unit;
The first monitoring unit generates a first state signal and sends the first state signal to the switching module, the first main control unit receives a first input signal and generates first message information, the first main control unit sends the first message information to the first output unit, and the first output unit generates a first output signal according to the first message information and sends the first output signal to the switching module.
Further, the method comprises the steps of,
The second circuit module comprises a second monitoring unit, a second main control unit and a second output unit, and the second main control unit is electrically connected with the second output unit;
the second monitoring unit generates a second state signal and sends the second state signal to the switching module, the second main control unit receives a second input signal and generates second message information, the second main control unit sends the second message information to the second output unit, and the second output unit generates a second output signal according to the second message information and sends the second output signal to the switching module.
Further, the method comprises the steps of,
The first power supply communication module supplies power to the first circuit module through a power supply line and transmits a first input signal to the first circuit module through a communication line, and the second power supply communication module supplies power to the second circuit module through the power supply line and transmits a second input signal to the second circuit module through the communication line.
Further, the method comprises the steps of,
The first power supply communication module is electrically connected with the external equipment through a first input cable, and the external equipment simultaneously sends a power supply signal and a first input signal to the first power supply communication module through the first input cable by using a power carrier technology;
the second power supply communication module is electrically connected with the external device through a second input cable, and the external device simultaneously sends a power supply signal and a second input signal to the second power supply communication module through the second input cable by using a power carrier technology.
Further, the method comprises the steps of,
The first power supply communication module sends a first input signal to a first main control unit in the first circuit module and a second main control unit in the second circuit module, and the second power supply communication module sends a second input signal to a second main control unit in the second circuit module and a first main control unit in the first circuit module.
Further, the method comprises the steps of,
The switching module receives a first state signal sent by the first LEU subsystem, a first output signal and a second state signal and a second output signal sent by the second LEU subsystem;
The switching module determines working states of the first LEU subsystem and the second LEU subsystem according to the first state signal and the second state signal, and selectively sends the first output signal and the second output signal to the active transponder according to the working states.
Further, the method comprises the steps of,
The first monitoring unit, the first main control unit and the first output unit in the first circuit module are integrated on the same printed circuit board, and the second monitoring unit, the second main control unit and the second output unit in the second circuit module are integrated on the same printed circuit board.
In a second aspect, based on the same inventive concept, embodiments of the present disclosure further provide a hot standby redundant LEU device, the device including a hot standby redundant LEU system and a box;
the hot standby redundant LEU system comprises a first LEU subsystem, a second LEU subsystem and a switching module, wherein the box body comprises a first inner space and a second inner space which are oppositely arranged, the first LEU subsystem is located in the first inner space, and the second LEU subsystem and the switching module are located in the second inner space.
Further, the method comprises the steps of,
The box body is parallelepipedal, the length of the box body is less than or equal to 150mm, the width of the box body is less than or equal to 300mm, and the height of the box body is less than or equal to 400mm.
Compared with the prior art, the method has the following advantages:
1. by using the power carrier technology, the external equipment can simultaneously realize power supply and communication of the LEU system through one cable, so that the number of the cables is reduced, and the cost of the equipment is reduced.
2. The monitoring unit, the main control unit and the output unit are integrated and integrated on the same printed circuit board, so that the LEU system is highly integrated.
3. And integrating the highly integrated LEU system into a small LEU box body to realize the miniaturization of LEU equipment.
Additional features and advantages of the disclosure will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the disclosure. The objectives and other advantages of the disclosure may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure 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 disclosure, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.
Fig. 1 is a block diagram of a hot standby redundant LEU system provided in an embodiment of the present disclosure;
Fig. 2 is a schematic diagram of a hot standby redundant LEU device according to an embodiment of the present disclosure.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are some embodiments of the present disclosure, but not all embodiments. Based on the embodiments in this disclosure, all other embodiments that a person of ordinary skill in the art would obtain without making any inventive effort are within the scope of protection of this disclosure.
In a first aspect, fig. 1 is a block diagram of a hot standby redundant LEU system provided by an embodiment of the present disclosure, and as shown in fig. 1, the embodiment of the present disclosure provides a hot standby redundant LEU system, where the LEU system includes a first LEU subsystem 1, a second LEU subsystem 2, and a switching module 3.
The first LEU subsystem 1 includes a first circuit module 12 and a first power supply communication module 11, the first power supply communication module 11 is electrically connected to an external device through a first input cable 41 and receives a power supply signal and a first input signal, the first circuit module 12 is electrically connected to the first power supply communication module 11, and the first power supply communication module 11 supplies power to the first circuit module 12 and transmits the first input signal. The second LEU subsystem 2 includes a second circuit module 22 and a second power supply communication module 21, the second power supply communication module 21 being electrically connected to an external device through a second input cable 42 to receive a power supply signal and a second input signal, the second circuit module 22 being electrically connected to the second power supply communication module 21, the second power supply communication module 21 supplying power to the second circuit module 22 and transmitting the second input signal. The first power supply communication module 11 is electrically connected with the second circuit module 22, the first power supply communication module 11 sends a first input signal to the second circuit module 22, the second power supply communication module 21 is electrically connected with the first circuit module 12, the second power supply communication module 21 sends a second input signal to the first circuit module 12, the first circuit module 12 is electrically connected with the switching module 3, the first circuit module 12 sends a first output signal to the switching module 3, the second circuit module 22 is electrically connected with the switching module 3, the second circuit module 22 sends a second output signal to the switching module 3, and the switching module 3 sends the first output signal or the second output signal to the active transponder through the output cable 5.
In the embodiment of the present disclosure, the first circuit module 12 includes a first monitoring unit 121, a first main control unit 122, and a first output unit 123, and the first main control unit 122 and the first output unit 123 are electrically connected. The first monitoring unit 121 generates a first status signal and sends the first status signal to the switching module 3, the first main control unit 122 receives the first input signal and generates first message information, the first main control unit 122 sends the first message information to the first output unit 123, and the first output unit 123 generates a first output signal according to the first message information and sends the first output signal to the switching module 3. The first monitoring unit 121 is configured to monitor and record key information data in the operation process of the first LEU subsystem 1, generate a first status signal, the first status signal is used for the switching module 3 to determine the working status of the first LEU subsystem 1, the first main control unit 122 is configured to receive a first input signal, process the recorded key information data and system data in combination, perform a logic operation, generate first message information, and the first output unit 123 is configured to generate a first output signal according to the first message information, and send the first output signal to the switching module 3. The first monitoring unit 121, the first main control unit 122, and the first output unit 123 are integrated on the same printed circuit board, including PCB, FPCB, etc., to constitute the first circuit module 12, which is not further limited herein.
Further, the second circuit module 22 includes a second monitoring unit 221, a second main control unit 222, and a second output unit 223, where the second main control unit 222 and the second output unit 223 are electrically connected. The second monitoring unit 221 generates a second state signal and sends the second state signal to the switching module 3, the second main control unit 222 receives the second input signal and generates second message information, the second main control unit 222 sends the second message information to the second output unit 223, and the second output unit 223 generates a second output signal according to the second message information and sends the second output signal to the switching module 3. The second monitoring unit 221 is configured to monitor and record key information data in the operation process of the second LEU subsystem 2, generate a second status signal, the second status signal is used for the switching module 3 to determine the working status of the second LEU subsystem 2, the second main control unit 222 is configured to receive a second input signal, process the recorded key information data and system data in combination, perform a logic operation, generate second message information, and the second output unit 223 is configured to generate a second output signal according to the second message information, and send the second output signal to the switching module 3. The second monitoring unit 221, the second main control unit 222, and the second output unit 223 are integrated on the same printed circuit board including PCB, FPCB, etc., which are not further limited herein, to constitute the second circuit module 22.
In the embodiment of the present disclosure, the first power supply communication module 11 is electrically connected to an external device through the first input cable 41, and the external device simultaneously transmits a power supply signal and a first input signal to the first power supply communication module 11 through the first input cable 41 using a power carrier technology. The external equipment comprises a power supply module and a train control center module, and can supply power and communicate with the first power supply communication module 11 by using a power carrier technology, so that the use amount of cables is reduced, and the construction cost is reduced. The first power supply communication module 11 processes the received first input signal, supplies power to the first circuit module 12 through the power supply line 61, and transmits the first input signal to the first circuit module 12 through the communication line 62, and further, the first input signal is transmitted to the first main control unit 122.
Further, the second power supply communication module 21 is electrically connected to the external device through the second input cable 42, and the external device simultaneously transmits the power supply signal and the second input signal to the second power supply communication module 21 through the second input cable 42 using the power carrier technology. The external device comprises a power supply module and a train control center module, and can supply power and communicate with the second power supply communication module 21 by using a power carrier technology, so that the use amount of cables is reduced, and the construction cost is reduced. The second power supply communication module 21 processes the received second input signal, supplies power to the second circuit module 22 through the power supply line 61, and transmits the second input signal to the second circuit module 22 through the communication line 62, and further, the second input signal is transmitted to the second main control unit 222.
In the embodiment of the present disclosure, the first power supply communication module 11 further transmits a first input signal to the second circuit module 22, specifically, transmits the first input signal to the second main control unit 222, and the second power supply communication module 21 further transmits a second input signal to the first circuit module 12, specifically, transmits the second input signal to the first main control unit 122. The first LEU subsystem 1 and the second LEU subsystem 2 adopt a hot standby redundancy design, the first LEU subsystem 1 is taken as a main system, the second LEU subsystem 2 is taken as a standby system as an example, the first LEU subsystem 1 mainly performs actual data processing work and bears main system tasks, the second LEU subsystem 2 keeps the same working state as the first LEU subsystem 1 and is used as a real-time backup of the first LEU subsystem 1, and when the first LEU subsystem 1 fails, the second LEU subsystem 2 takes over the first LEU subsystem 1 to work, so that the continuous operation of the LEU system is ensured. Thus, the first powered communication module 11 also sends a first input signal to the second circuit module 22, the second powered communication module 21 also sends a second input signal to the first circuit module 12, in order to synchronize and back up the information of the first and second LEU subsystems 1 and 2.
In the disclosed embodiment, the switching module 3 receives the first status signal, the first output signal of the first LEU subsystem 1 and the second status signal and the second output signal of the second LEU subsystem 2 in real time. The switching module 3 determines the working states of the first LEU subsystem 1 and the second LEU subsystem 2 according to the first state signal and the second state signal, and selectively sends a first output signal or a second output signal to the active transponder according to the working states, wherein the first output signal comprises first message information, and the second output signal comprises second message information.
In a second aspect, fig. 2 is a schematic diagram of a hot standby redundant LEU device provided in an embodiment of the present disclosure, and as shown in fig. 2, based on the same inventive concept, the embodiment of the present disclosure further provides a hot standby redundant LEU device, where the device includes a hot standby redundant LEU system and a box 10. The hot standby redundant LEU system comprises a first LEU subsystem, a second LEU subsystem and a switching module, wherein the box body 10 comprises a first inner space and a second inner space which are oppositely arranged, the first LEU subsystem is located in the first inner space, and the second LEU subsystem and the switching module are located in the second inner space.
With continued reference to fig. 2, in order to reduce the space occupied by the hot standby redundant LEU device, to achieve miniaturization of the device, a parallelepiped box 10 is selected, the length of the box 10 is less than or equal to 150mm, the width of the box 10 is less than or equal to 300mm, and the height of the box 10 is less than or equal to 400mm. The housing 10 of existing LEU equipment typically employs a 4U cage design, with a single housing 10 having a length of approximately 177.8mm, a housing 10 having a width of 320mm and a housing 10 having a height of 482.6mm. The hot standby redundant LEU system provided in the present disclosure may be placed in a smaller cabinet 10, reducing the footprint of the hot standby redundant LEU device.
Although the present disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that modifications may be made to the technical solutions described in the foregoing embodiments or equivalents may be substituted for some of the technical features thereof, and these modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present disclosure in essence.