CN116527079A - Margin L-band integrated system and main-standby switching method thereof - Google Patents

Margin L-band integrated system and main-standby switching method thereof Download PDF

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Publication number
CN116527079A
CN116527079A CN202310708534.9A CN202310708534A CN116527079A CN 116527079 A CN116527079 A CN 116527079A CN 202310708534 A CN202310708534 A CN 202310708534A CN 116527079 A CN116527079 A CN 116527079A
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China
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main
standby
main control
control interface
interface module
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Inventor
季玉雷
李力
周君琪
姜畦
陈世增
韦彦伯
陈子凡
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China Aeronautical Radio Electronics Research Institute
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China Aeronautical Radio Electronics Research Institute
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Priority to CN202310708534.9A priority Critical patent/CN116527079A/en
Publication of CN116527079A publication Critical patent/CN116527079A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/74—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus
    • H04B1/745—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus using by-passing or self-healing methods
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
    • H04L41/0663—Performing the actions predefined by failover planning, e.g. switching to standby network elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)

Abstract

The invention relates to a margin L-band comprehensive system, which comprises an L-band comprehensive frame, an L-band antenna interface unit, an L-band omnidirectional antenna, an antenna distribution box and a radio interface unit, wherein the L-band comprehensive frame is internally provided with a main side and a standby side which are formed by two general processing modules, and each general transceiver module is connected with one L-band antenna interface unit; the two L-band antenna interface units are connected to the same antenna distribution box, then the antenna distribution box is connected to the L-band omnidirectional antenna, the antenna distribution box is also connected with a main control interface module in one of the general processing modules, and after receiving a main-standby switching instruction of the main control interface module, the L-band omnidirectional antenna is distributed to the L-band antenna interface of the main side; each radio interface unit receives a main-standby switching instruction issued by an external radio tuning unit and transmits the main-standby switching instruction to a main control interface module connected with each radio interface unit to complete main-standby switching. The invention uses one antenna for two sets of receiving and transmitting processing subsystems, which reduces the using amount of the antenna by one time.

Description

Margin L-band integrated system and main-standby switching method thereof
Technical Field
The invention relates to the field of wireless communication, in particular to wireless communication equipment of a civil aviation aircraft, which is a margin L-band integrated system and a main-standby switching method thereof.
Background
The national aviation regulations prescribe that the navigation equipment does not influence the operation of one set of system when the design and installation of the navigation equipment need to ensure that the other set of system fails. Devices operating in the L-band typically include transponders (ATC), rangefinders (DME), and an overhead collision avoidance alert system (TCAS), which are electronic devices that automatically respond to a radio interrogation signal when the signal is received; the range finder is an instrument for testing the skew between the aircraft and the tower in an inquiry and response mode; TCAS monitors the presence, location, and movement of other aircraft in the airspace surrounding this aircraft by interrogating and listening to the ATC transponders of the surrounding aircraft. The traditional civil aircraft needs two sets of equipment, and every equipment needs an antenna to transmit and receive, and when one set of inefficacy, the button switches to another set of independent equipment and antenna work, because two sets of independent equipment and two sets of antennas exist simultaneously, the overall arrangement takes up a big place in the ratio space, is unfavorable for the burden reduction of aircraft and subtracts heavy.
Disclosure of Invention
Under the important requirement of aircraft reduction in a large system integration environment, the invention aims to provide a margin L-band integrated system (LIS for short), and the main and standby transceiver processing subsystems share one antenna, so that the using amount of the antenna is reduced by one time, and the functions are more integrated. The invention further aims to provide a main-standby switching method of the allowance L-band integrated system, which is used for switching the main-standby two sets of receiving and transmitting processing subsystems in the L-band integrated system, so that the switching reliability is improved, the no-load risk of equipment is reduced, and the normal use of the equipment can be ensured when any equipment on the main side is damaged.
The invention aims at realizing the following technical scheme:
a margin L-band integrated system comprises an L-band integrated rack, an L-band antenna interface unit, an L-band omni-directional antenna, an antenna distribution box and a radio interface unit;
the L-band comprehensive rack is internally provided with a main side and a standby side which are formed by two general processing modules, each general processing module comprises a main control interface module, an ATC module and a DME module, and the main control interface module completes the switching between the main side and the standby side according to a main-standby switching instruction;
each universal transceiver module is connected with an L-band antenna interface unit;
the two L-band antenna interface units are connected to the same antenna distribution box, then the antenna distribution box is connected to the L-band omnidirectional antenna, the antenna distribution box is also connected with one of the two main control interface modules, and after receiving a main and standby switching instruction of the connected main control interface module, the L-band omnidirectional antenna is distributed to the L-band antenna interface of the main side;
each main control interface module is connected with a radio interface unit, and the radio interface unit receives a main and standby switching instruction issued by an external radio tuning unit and transmits the main and standby switching instruction to the main control interface module.
The margin L-band comprehensive system also comprises TCAS equipment consisting of a TCAS antenna interface unit, a TCAS directional antenna and a TCAS omnidirectional antenna.
The main-standby switching method of the allowance L-band integrated system comprises the steps that when the L-band integrated system is started or restarted after power failure of a radio tuning unit, two main control interface modules respectively send main-standby switching instruction inquiry to radio interface units connected with the two main control interface modules, and each radio interface unit obtains the main-standby switching instruction from the radio tuning unit and sends the main-standby switching instruction to the connected main control interface module, and the main control interface module processes the main-standby switching instruction according to a preset main-standby switching logic; when the radio tuning unit is later than the starting or power-down restarting of the L-band comprehensive system, the radio tuning unit sends a main-standby switching instruction to the main control interface module, and executes the established main-standby switching logic.
After receiving the main and standby switching instructions, the main control interface module firstly switches the antenna distribution box state from a default state to a main and standby switching instruction requirement state, and then starts the ATC module and the DME module on the main side to carry out waveform output.
When the two main control interface modules receive the main and standby switching instructions from the radio interface units connected respectively at the same time and the instructions are inconsistent, the main and standby switching instructions received by the main control interface module on the current main side are used as the reference, and the main and standby switching instructions on the standby side are issued by the main control interface module on the current main side through the RS422 bus.
When each main control interface module monitors that the radio interface unit on the current main side is offline through the ARINC429 channel, the main and standby switching instructions on the main side are issued by the main control interface module on the current standby through the RS422 based on the main and standby switching instructions received by the main control interface module on the current standby.
The default power amplifier is not opened when the L-band antenna interface unit is powered on, and the power amplifier is opened for transmitting after the main control interface module finishes the power on starting.
The L-band antenna interface unit sets a protection threshold according to the line loss of the cable and the antenna distribution box on the actual machine, protects when no-load is detected, and the protection device continuously detects and recovers when a passage is detected.
The main control interface module at one side of the unconnected antenna distribution box is switched from the main side to the standby side: when the main side main control interface module receives an external instruction or detects that ARINC429 is offline and does not receive the external instruction and receives an instruction transmitted by the standby side main control interface module as standby, firstly closing the waveform functions of the same side ATC module and the DME module, then transmitting a waveform closing state to the main control interface module at the other side, and finally setting the main control interface module as standby;
the process of switching the main control interface module at one side of the unconnected antenna distribution box from the standby side to the main side is as follows: when the standby side main control interface module receives the waveform closing state of the main side main control interface module, the waveform functions of the ATC module and the DME module on the same side are started first, and then the main control interface module is set as the main.
The process of switching the main control interface module connected with one side of the antenna distribution box from the main side to the standby side is as follows: when the main control interface module receives an external instruction or detects that ARINC429 is offline and does not receive the external instruction and receives the instruction transmitted by the main control interface module at the standby side as standby, firstly closing the waveform functions of the ATC module and the DME module at the same side, then switching the state of the antenna distribution box, then transmitting the waveform closing state to the main control interface module at the other side, and finally setting the main control interface module as standby;
the process of switching the main control interface module connected with one side of the antenna distribution box from the standby side to the main side is as follows: when the waveform closing state of the main-side main control interface module is received, the antenna distribution box state is switched, then the waveform functions of the same-side ATC module and the DME module are started, and finally the main control interface module is set as the main.
The invention has the beneficial effects that:
1. the invention uses one antenna for the two main and standby receiving and transmitting processing subsystems, which reduces the using amount of the antenna by one time and integrates the functions.
2. The power-on initialization logic can ensure the consistency of the display of the radio tuning unit and the actual working state of the L-band comprehensive system when the power-on time difference is relatively large, and can ensure that the working state can not enter a default state after individual equipment is restarted when the voltage is disordered, but is consistent with the display of the radio tuning unit, thereby improving the reliability of the equipment.
3. The transmission logic between the main control interface modules can ensure the consistency of receiving external signals, ensure that two main control interface modules can execute the same instruction, avoid the state that the main side equipment and the standby side equipment work simultaneously or do not work simultaneously, and improve the reliability of the equipment.
4. The logic between the main control interface module and the L-band antenna interface unit, the logic between the antenna distribution box and the L-band antenna interface unit can reduce the risk of power amplifier burnout caused by long-time idle load of the L-band antenna interface unit to the greatest extent.
Drawings
FIG. 1 is a cross-linking diagram of an L-band integrated system.
Fig. 2 is a power-on schematic diagram of an L-band integrated system.
Fig. 3 is a main-standby switching logic diagram of a main control interface module of an unconnected antenna distribution box.
Fig. 4 is a main-standby switching logic diagram of a main control interface module connected with an antenna distribution box.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples.
Referring to fig. 1, the L-band margin L-band integrated system shown in this embodiment is composed of an L-band integrated chassis (abbreviated as LIU), an L-band antenna interface unit (abbreviated as LAIU), an L-band omni-directional antenna (up and down), an antenna allocation box (abbreviated as ADU), a radio interface unit (abbreviated as RIU), a TCAS antenna interface unit, a TCAS directional antenna (up), a TCAS omni-directional antenna (down), and the like.
The L-band comprehensive rack is internally provided with a main side and a standby side which are formed by two general processing modules, each general processing module comprises a power supply module, a main control interface module (CDCM for short), an ATC module and a DME module, the main control interface module completes the switching of the main side and the standby side according to a main-standby switching instruction, and the ATC module and the DME module respectively complete the transmission and the reception of corresponding waveforms. The L-band integrated rack is one of important components of an integrated communication navigation system of the AG600 aircraft, realizes communication navigation monitoring functions of TCAS, ATC, DME, ADS-B OUT and the like through an integrated structure, and meets the requirements of the AG600 aircraft on executing various tasks.
Each universal receiving and transmitting module is connected with an L-band antenna interface unit to form a complete receiving and transmitting processing subsystem. The two L-band antenna interface units are independently powered and kept independent; in the L-band comprehensive rack, the left-side and right-side universal transceiver modules are kept independently powered and are independently connected with an external interface so as to realize complete isolation.
According to the current L-band integrated system architecture, a DME system consists of an L-band antenna interface unit and a DME module (without antenna). When the L-band antenna interface unit or the DME module of one DME system fails, the other DME system is not affected, and normal operation can be continued.
Also, an ATC system is composed of an L-band antenna interface unit and an ATC module (without antenna). When the L-band antenna interface unit or the ATC module of one ATC system fails, the other ATC system is not affected, and can continue to work normally.
The two L-band antenna interface units are connected to the same antenna distribution box, and then the antenna distribution box is connected to the L-band omni-directional antenna, the antenna distribution box is connected with one of the two main control interface modules through a differential discrete quantity, after receiving a main and standby switching instruction of the main control interface module, the L-band omni-directional antenna is distributed to the L-band antenna interface of the main side, and the main side and the standby side share the antenna.
Each RIU is connected with a main control interface module, and receives a main and standby switching instruction issued by an external device radio tuning unit (RTU for short) and transmits the main and standby switching instruction to the main control interface module.
The TCAS equipment communicates with the main control interface modules at both sides at the same time, and is not influenced by the main control interface modules. The active-standby switching mainly relates to an ATC system and a DME system.
According to the margin L-band comprehensive system, the main and standby switching method comprises power-on and initialization logic and logic among devices.
The main and standby switching instructions are issued by an external device radio tuning unit (RTU for short) and are event type. Referring to FIG. 2, to ensure consistent RTU display and LIS operational status, a LIS to RTU challenge-response mechanism is added: when the RTU is powered on and the LIS is later than the RTU, starting or restarting after power failure, two main control interface modules CDCM1 and CDCM2 in the LIS system respectively send main and standby switching instruction inquiry to radio interface units RIU1 and RIU2 respectively connected, the RIU1 obtains main and standby switching instructions from two radio tuning units RTU1 and RTU2 and sends the main and standby switching instructions to the CDCM1, the RIU2 obtains main and standby switching instructions from the RTU1 and RTU2 and sends the main and standby switching instructions to the CDCM2, and the main control interface module processes the main and standby switching instructions according to the preset main and standby switching logic and returns a main and standby state to the RTU after execution is finished. When the RTU is later than the LIS, the RTU can send a main-standby switching instruction to the main control interface module to execute the established main-standby switching logic.
The main-standby switching logic is that after receiving the main-standby switching instruction, the main control interface module firstly switches the state of the antenna distribution box from a default state to a main-standby switching instruction requirement state, and then starts the ATC module and the DME module on the main side to output waveforms.
When the two main control interface modules CDCM1 and CDCM2 simultaneously receive the main and standby switching instructions from the radio interface units RIU1 and RIU2 connected respectively and the instructions are inconsistent (the CDCM1 and the CDCM2 are made to be main or standby at the same time), no load is caused to the LAIU, the LIS is now defined to be prepared by using the main and standby switching instructions received by the current main side CDCM, and the standby side main and standby switching instructions are issued by the current main CDCM through the RS422 bus.
When the RIU1 is offline and the CDCM1 is in the main state, the RIU1 instruction and the tuning information cannot be issued, and the main-standby switching instruction cannot be issued to the CDCM1 to switch the main-standby state, so that the CDCM2 in the standby state cannot be switched to the main state under the condition. When each main control interface module monitors that the RIU on the current main side is offline, the LIS is defined based on the main-standby switching instruction received by the current standby CDCM through the ARINC429 channel monitoring mechanism of the CDCM, and the main-standby switching instruction on the main side is issued by the current standby CDCM through the RS 422.
The software is started after the main control interface module is electrified, the ATC module and the DME module are electrified and emit quickly, the signal waveform can be directly sent to the LAIU for amplification output, at the moment, the state of the ADU is not changed when the ADU does not receive the main control interface module main and standby switching instruction, and the LAIU has no-load risk. A layer of logic is added, the LAIU is powered on to default power amplifier is not turned on, and the power amplifier is turned on again to transmit when the time information issued by the main control interface module is received.
The antenna distribution box only receives the main-standby switching instruction of the main control 2 through a differential discrete quantity, the main control interface module cannot return the state of the main control module, the main control interface module cannot know the power-on state of the antenna distribution box, the phenomenon that the antenna distribution box is delayed to be powered on for more than ten seconds exists on the machine, and the risk of no load exists in the LAIU. The solution is that LAIU sets protection threshold according to the line loss of the cable and the antenna distribution box on the actual machine, increases open circuit protection measures, protects when no-load is detected, the protection device continuously detects, and recovers when the access is detected.
If the current active/standby state of CDCM1 is inconsistent with the active/standby state of CDCM1 required in the active/standby switch instruction, CDCM1 switches to the state required by the instruction, as shown in table 1 and fig. 3:
TABLE 1
When the CDCM1 works on the main side and receives an external instruction or detects that the ARINC429 goes off-line and does not receive an external instruction to receive an instruction transmitted by the CDCM2, the execution instruction sequence of the CDCM1 is as follows: closing waveform functions of the ATC module and the DME module at the CDCM1 side to ensure that the CDCM1 side does not emit; transmitting the waveform off state to CDCM2; CDCM1 is set as standby.
When the CDCM1 works on the standby side and the waveform closing state of the CDCM2 is received, the execution instruction sequence is as follows: turning on CDCM1 waveform function; CDCM1 is set as the main.
The working logic of the master/slave switching of the CDCM2 module is shown in the table 2 and the figure 4, if the current master/slave state of the CDCM2 is inconsistent with the master/slave state of the CDCM1 required in the master/slave switching instruction, the CDCM2 is switched to the instruction required state;
TABLE 2
When the CDCM2 works on the main side and receives an external instruction or detects that the ARINC429 goes off-line and does not receive the external instruction, and then the CDCM1 transmits an instruction, the order of executing the instructions by the CDCM2 is as follows: closing the CDCM2 side waveform function to prevent the local side from emitting; switching the ADU state; transmitting the waveform off state to CDCM1; CDCM2 is set as standby.
When the CDCM2 works on the standby side and the waveform closing state of the CDCM1 is received, the execution instruction sequence is as follows: switching the ADU state; turning on CDCM2 waveform function; CDCM2 is set as the main.
It will be understood that equivalents and modifications will occur to those skilled in the art in light of the present invention and their spirit, and all such modifications and substitutions are intended to be included within the scope of the present invention as defined in the following claims.

Claims (10)

1. A margin L wave band integrated system includes L wave band integrated frame, L wave band antenna interface unit, L wave band omnidirectional antenna, antenna distribution box, radio interface unit, its characterized in that:
the L-band comprehensive rack is internally provided with a main side and a standby side which are formed by two general processing modules, each general processing module comprises a main control interface module, an ATC module and a DME module, and the main control interface module completes the switching between the main side and the standby side according to a main-standby switching instruction;
each universal transceiver module is connected with an L-band antenna interface unit;
the two L-band antenna interface units are connected to the same antenna distribution box, then the antenna distribution box is connected to the L-band omnidirectional antenna, the antenna distribution box is also connected with one of the two main control interface modules, and after receiving a main and standby switching instruction of the connected main control interface module, the L-band omnidirectional antenna is distributed to the L-band antenna interface of the main side;
each main control interface module is connected with a radio interface unit, and the radio interface unit receives a main and standby switching instruction issued by an external radio tuning unit and transmits the main and standby switching instruction to the main control interface module.
2. The margin L-band synthesis system of claim 1, further comprising TCAS equipment comprising TCAS antenna interface units, TCAS directional antennas, TCAS omni-directional antennas.
3. A method for switching between active and standby of a margin L-band integrated system according to claim 1 or 2, characterized in that: when the L-band integrated system is later than the starting or power-down restarting of the radio tuning unit, the two main control interface modules respectively send main-standby switching instruction inquiry to the radio interface units connected with the two main control interface modules, each radio interface unit obtains the main-standby switching instruction from the radio tuning unit and sends the main-standby switching instruction to the connected main control interface module, and the main control interface module processes the main-standby switching instruction according to the preset main-standby switching logic; when the radio tuning unit is later than the starting or power-down restarting of the L-band comprehensive system, the radio tuning unit sends a main-standby switching instruction to the main control interface module, and executes the established main-standby switching logic.
4. A method for switching between active and standby of a margin L-band synthesis system according to claim 3, wherein: after receiving the main and standby switching instructions, the main control interface module firstly switches the antenna distribution box state from a default state to a main and standby switching instruction requirement state, and then starts the ATC module and the DME module on the main side to carry out waveform output.
5. A method for switching between active and standby of a margin L-band synthesis system according to claim 3, wherein: when the two main control interface modules receive the main and standby switching instructions from the radio interface units connected respectively at the same time and the instructions are inconsistent, the main and standby switching instructions received by the main control interface module on the current main side are used as the reference, and the main and standby switching instructions on the standby side are issued by the main control interface module on the current main side through the RS422 bus.
6. A method for switching between active and standby of a margin L-band synthesis system according to claim 3, wherein: when each main control interface module monitors that the radio interface unit on the current main side is offline through the ARINC429 channel, the main and standby switching instructions on the main side are issued by the main control interface module on the current standby through the RS422 based on the main and standby switching instructions received by the main control interface module on the current standby.
7. A method for switching between active and standby of a margin L-band synthesis system according to claim 3, wherein: the default power amplifier is not opened when the L-band antenna interface unit is powered on, and the power amplifier is opened for transmitting after the main control interface module finishes the power on starting.
8. A method for switching between active and standby of a margin L-band synthesis system according to claim 3, wherein: the L-band antenna interface unit sets a protection threshold according to the line loss of the cable and the antenna distribution box on the actual machine, protects when no-load is detected, and the protection device continuously detects and recovers when a passage is detected.
9. A method for switching between active and standby of a margin L-band synthesis system according to claim 3, wherein: the main control interface module at one side of the unconnected antenna distribution box is switched from the main side to the standby side: when the main side main control interface module receives an external instruction or detects that ARINC429 is offline and does not receive the external instruction and receives an instruction transmitted by the standby side main control interface module as standby, firstly closing the waveform functions of the same side ATC module and the DME module, then transmitting a waveform closing state to the main control interface module at the other side, and finally setting the main control interface module as standby;
the process of switching the main control interface module at one side of the unconnected antenna distribution box from the standby side to the main side is as follows: when the standby side main control interface module receives the waveform closing state of the main side main control interface module, the waveform functions of the ATC module and the DME module on the same side are started first, and then the main control interface module is set as the main.
10. A method for switching between active and standby of a margin L-band synthesis system according to claim 3, wherein: the process of switching the main control interface module connected with one side of the antenna distribution box from the main side to the standby side is as follows: when the main control interface module receives an external instruction or detects that ARINC429 is offline and does not receive the external instruction and receives the instruction transmitted by the main control interface module at the standby side as standby, firstly closing the waveform functions of the ATC module and the DME module at the same side, then switching the state of the antenna distribution box, then transmitting the waveform closing state to the main control interface module at the other side, and finally setting the main control interface module as standby;
the process of switching the main control interface module connected with one side of the antenna distribution box from the standby side to the main side is as follows: when the waveform closing state of the main-side main control interface module is received, the antenna distribution box state is switched, then the waveform functions of the same-side ATC module and the DME module are started, and finally the main control interface module is set as the main.
CN202310708534.9A 2023-06-14 2023-06-14 Margin L-band integrated system and main-standby switching method thereof Pending CN116527079A (en)

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