CN113050479B - Method for switching working modes of universal remote interface unit - Google Patents
Method for switching working modes of universal remote interface unit Download PDFInfo
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- CN113050479B CN113050479B CN202110243656.6A CN202110243656A CN113050479B CN 113050479 B CN113050479 B CN 113050479B CN 202110243656 A CN202110243656 A CN 202110243656A CN 113050479 B CN113050479 B CN 113050479B
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000012360 testing method Methods 0.000 claims description 55
- 238000012423 maintenance Methods 0.000 claims description 45
- 238000002161 passivation Methods 0.000 claims description 25
- 230000002452 interceptive effect Effects 0.000 claims description 20
- 238000012544 monitoring process Methods 0.000 claims description 20
- 238000001514 detection method Methods 0.000 claims description 12
- 230000005283 ground state Effects 0.000 claims description 9
- 239000000725 suspension Substances 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 8
- 230000005284 excitation Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 4
- 238000003745 diagnosis Methods 0.000 claims description 3
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/23—Pc programming
- G05B2219/23051—Remote control, enter program remote, detachable programmer
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Abstract
The invention discloses a method for switching the working modes of a universal remote interface unit, which provides a universal remote interface unit working mode and switching thereof, and realizes the universalization of the remote interface unit through the composition of part or all of working modes of a basic working mode set and a user-defined working mode set so as to solve the requirements of various remote interface units on a machine on application scenes of different working modes; meanwhile, the states of the interface circuits under different working modes are set, and the safety and reliability of resident interconnection of the remote interface unit and the aircraft resident function are ensured.
Description
Technical Field
The invention discloses a method for switching working modes and defining interface circuits of a generalized remote interface unit, and belongs to the technical field of IMA (integrated circuit) platforms on board civil aircraft.
Background
The remote interface unit belongs to the technical field of IMA platform, provides basic shared resources-interface resources for a plurality of aircraft systems, and does not belong to the main member systems of the aircraft generally.
The remote interface unit provides universal interface resources for the whole aircraft system, so that the number of types and the number of interfaces are large, the interface safety positions are widely distributed in the whole aircraft, and a series of problems of large number of interconnection cables, long length, large weight, low utilization rate of universal interface unit resources and the like exist. Therefore, the remote interface unit provider generally uses a dedicated remote interface signal processing unit for the signals intensively distributed in the individual areas according to the distribution of the interface signals, and uses a more generalized remote interface signal processing unit for the signals widely used in the entire aircraft and the multiple remote interface units are required to be installed in the entire aircraft. The system ensures the consistency of the work of various remote interface units and the safety of the interface interconnection between different remote interface units and various aircraft residence functions, improves the installation reliability of the remote interface units, reduces the difficulty of system integration, improves the working efficiency, reduces the number of maintenance personnel through generalized design and reduces the maintenance cost.
In the prior art, a complete and comprehensive working mode switching method for the universal remote interface unit does not exist.
Disclosure of Invention
The invention provides a method for switching the working modes of a universal remote interface unit, which realizes the universalization of the remote interface unit through the composition of part or all of the working modes of a basic working mode set and a user-defined working mode set, and defines the states of interface circuits under different working modes to ensure the safe working of the interface circuits.
In order to realize the tasks, the invention adopts the following technical scheme:
the method for switching the working modes of the universal remote interface unit comprises the steps that the universal remote interface unit realizes the universal requirement by determining a basic working mode and combining the basic working mode with a user-defined working mode; the remote interface unit comprises the following basic working modes:
a power-down working mode, a reset working mode, an initialization working mode, an on-board normal working mode, an on-board passive data loading working mode, a ground workshop maintenance working mode, an on-board interactive test working mode, an over-temperature working mode and a suspension working mode;
for the current working mode of the remote interface unit, if the external trigger condition meets the switching condition of the current working mode, the current working mode is switched out.
Further, when the current working mode of the remote interface unit is a power-down working mode, the remote interface unit is not electrified, the interface circuits of the remote interface unit are in an unpowered state, and the interface circuits have no influence on external interconnection equipment; the remote interface unit switches out the current operating mode when the following external trigger conditions are met:
the remote interface unit is electrified, and then the remote interface unit is switched to a reset working mode;
when the current working mode of the remote interface unit is a reset working mode, the internal components of the remote interface unit are kept in a reset state, and an interface circuit of the remote interface unit is in a passivation state; the remote interface unit switches out the current operating mode when the following external trigger conditions are met:
the reset state of the component is kept to be ended, and the operation mode is switched to an initialization operation mode;
the passivation state refers to:
(1) If the power supply of the interface circuit has the power-on and power-off control capability, the power supply control of the interface circuit is switched to the power-off state, and the state of the interface circuit is the passivation state;
(2) Classifying interface circuits without power supply control according to different interface types, and setting the condition that each type reaches a passivation state;
the passivation state can be configurable by loading a configuration file containing interface information; the passivation operation is automatically switched and controlled by software/firmware according to the configuration information.
Further, when the current working mode of the remote interface unit is the initialization working mode, the remote interface unit is initialized, and an interface circuit of the remote interface unit is in a default state; the remote interface unit switches out the current operating mode when the following external trigger conditions are met:
the method comprises the steps that 1, after initialization is finished, state discrete quantities of a remote interface unit are collected, and if the condition requirements of normal operation are met, the normal operation mode on the machine is switched;
the condition 2, the initialization is finished, the state discrete quantity of the remote interface unit is collected, and if the condition requirement of the maintenance work of the ground workshop is met, namely, the remote interface unit collects that the working mode is in the maintenance work mode of the ground workshop, the maintenance work mode of the ground workshop is switched;
3, self-checking errors during initialization, including position code checking errors or internal faults, and switching to a suspended working mode;
wherein the default state is configurable by loading a configuration file containing interface information, and the configurable information comprises: interface type, default state; the default state is defined by each aircraft system according to the application scene of the function, and when the interface circuit of the remote interface unit is in the default state, the system can be ensured to work normally completely; for digital buses, the remote interface unit can only manage the IMA platform default state.
Further, when the current working mode of the remote interface unit is an on-board normal working mode, the remote interface unit is in an installed state and detects an aircraft wheel load signal, and the current installed state is judged;
the installation state comprises two conditions of air and ground, all functional modules of the remote interface unit normally operate according to software scheduling under the air condition, and an interface circuit of the remote interface unit is switched from a default state to a state controlled by functional software; the remote interface unit switches out the current operating mode when the following external trigger conditions are met:
condition 1, reset trigger event, typically includes: the watchdog overtime, the recovery operation, the manual reset and the automatic reset are switched to a reset working mode;
the remote interface unit acquires that the working mode is in a ground loading mode, receives a loading request sent by a loader and switches to an on-board passive data loading working mode;
the remote interface unit is installed, meets the ground condition, receives a test request sent by ground maintenance test equipment and switches to an on-board interactive test working mode;
and 4, switching to an overtemperature working mode when the temperature monitoring result exceeds the normal working range.
Further, when the current working mode of the remote interface unit is an on-board passive data loading working mode, the remote interface unit is in an installed state, and an aircraft wheel load signal is detected to be in a ground state, at the moment, a data loading instruction request sent by a data loader through a loading bus is received, the remote interface unit passively receives and solidifies data sent by an external data loader, and no special requirement is met on a interface circuit in the current working mode, so that the interface circuit is designed to be in a default state; the remote interface unit switches out the current operating mode when the following external trigger conditions are met:
the method comprises the following steps that 1, a remote interface unit receives a loading end instruction and switches to an initialization operation mode;
and 2, switching to an overtemperature working mode when the temperature monitoring result exceeds the normal working range.
Further, when the current working mode of the remote interface unit is a ground workshop maintenance working mode, the remote interface unit is in an uninstalled ground state, and a special test bench is used for carrying out bottom hardware or firmware upgrading, software upgrading and fault positioning in a laboratory; the current working mode may involve fault location of the interface circuit, and needs classification processing:
for the interface circuit related to fault positioning, setting the state of the I/O interface circuit by special fault positioning software according to the fault positioning requirement; other interface circuits without test requirements are set as default states; the remote interface unit switches out the current operating mode when the following external trigger conditions are met:
the method comprises the following steps that 1, a remote interface unit receives a ground workshop maintenance ending instruction and switches to an initialization operation mode;
and 2, switching to an overtemperature working mode when the temperature monitoring result exceeds the normal working range.
Further, when the current working mode of the remote interface unit is an on-board interactive test working mode, the remote interface unit is installed, and detects that an on-board wheel load signal is in a ground state, and at the moment, a test instruction request sent by an on-board maintenance system through a maintenance bus is received;
the remote interface unit is connected with the ground maintenance test equipment to perform interactive test, a maintainer provides interface circuit input excitation and sends a self-detection instruction to the remote interface unit through the test equipment, and the remote interface unit sends state data to the test equipment according to the self-detection instruction to acquire and control a corresponding output interface circuit so as to achieve the purpose of fault diagnosis;
the current working mode may involve testing of interface circuits, requiring classification processing: for the interface circuit related to the test, the state of the interface circuit is controlled by a self-detection command, and the state of the I/O interface circuit is set according to the maintenance requirement; other interface circuits without test requirements are set as default states; the remote interface unit switches out the current operating mode when the following external trigger conditions are met:
the method comprises the following steps that 1, a remote interface unit exits a current mode through reset operation and is switched to a reset working mode;
and 2, switching to an overtemperature working mode when the temperature monitoring result exceeds the normal working range.
Further, when the current working mode of the remote interface unit is an overtemperature working mode, the remote interface unit is in a functional mode, the temperature detection circuit finds that the current working temperature range exceeds the preset working range, only the normal working of the temperature monitoring function is reserved, other functional circuits are stopped, and the interface circuit is in a passivation state; the remote interface unit switches out the current operating mode when the following external trigger conditions are met:
and switching to an initialization operation mode when the temperature monitoring result is in a normal working range.
Further, when the current working mode of the remote interface unit is a suspending working mode, the remote interface unit stops working, and an interface circuit of the remote interface unit is in a passivation state; the remote interface unit switches out the current operating mode when the following external trigger conditions are met:
the remote interface unit is manually reset and switched to a reset mode of operation.
Further, for a reset operation mode, an initialization operation mode, an on-board normal operation mode, an on-board passive data loading operation mode, a ground workshop maintenance operation mode, an on-board interactive test operation mode, an over-temperature operation mode and a suspension operation mode, when the external power supply equipment stops supplying power to the remote interface unit, the remote interface unit is immediately switched from the current operation mode to the power-down operation mode;
for an initialization operation mode, an on-board normal operation mode, an on-board passive data loading operation mode, a ground workshop maintenance operation mode, an on-board interactive test operation mode, an over-temperature operation mode and a suspension operation mode, after a reset event is triggered, the method generally comprises the following steps: generally comprises: the watchdog is overtime, resumes operation, manual reset, automatic reset, and the remote interface unit immediately switches from the current operating mode to the reset operating mode.
Compared with the prior art, the invention has the following technical characteristics:
the invention designs the working mode switching of the universal remote interface unit and the safe working state of the interface circuit, improves the installation reliability of the remote interface unit, reduces the difficulty of system integration, improves the working efficiency, reduces the number of maintenance personnel and reduces the maintenance cost through the universal design.
Drawings
Fig. 1 is a schematic diagram illustrating switching of working modes of a generalized remote interface unit.
Detailed Description
The invention defines a generalized remote interface unit working mode and switching thereof, and realizes the generalization of the remote interface unit by the composition of part or all working modes of a basic working mode set and a custom working mode set so as to solve the requirements of various remote interface units on the aircraft on application scenes of different working modes; meanwhile, the states of the interface circuits under different working modes are defined, and the safety and reliability of resident interconnection of the remote interface unit and the aircraft resident function are ensured.
The method realizes the generalization of the remote interface unit by determining the composition of basic operation modes and custom operation modes, and defines the states of the interface circuits under different operation modes to ensure the safe operation of the interface circuits, and the remote interface unit comprises the following basic operation modes:
basic working mode: a power-down working mode, a reset working mode, an initialization working mode and an on-board normal working mode; and (3) customizing a working mode: an on-board passive data loading working mode, a ground workshop maintenance working mode, an on-board interactive test working mode, an overtemperature working mode and a suspension working mode.
For the current working mode of the remote interface unit, if the external trigger condition meets the switching condition of the current working mode, the current working mode is switched out.
The following describes the state of the interface circuit in each working mode and the condition of switching out the current working mode.
1. Down-working mode
When the current working mode of the remote interface unit is a power-down working mode, the remote interface unit is not electrified, the interface circuits of the remote interface unit are in an unpowered state, and the interface circuits have no influence on external interconnection equipment; the remote interface unit switches out the current operating mode when the following external trigger conditions are met:
the remote interface unit is electrified, and then the remote interface unit is switched to a reset working mode;
when the current working mode of the remote interface unit is a reset working mode, the internal components of the remote interface unit are kept in a reset state, and an interface circuit of the remote interface unit is in a passivation state; the remote interface unit switches out the current operating mode when the following external trigger conditions are met:
the reset state of the component is kept to be ended, and the operation mode is switched to an initialization operation mode;
the passivation state refers to:
(1) If the power supply of the interface circuit has the power-on and power-off control capability, the power supply control of the interface circuit is switched to the power-off state, and the state of the interface circuit is the passivation state;
(2) Classifying interface circuits without power supply control according to different interface types, and setting the condition that each type reaches a passivation state; embodiments of the present invention provide for the design of passivation states for the following interface types:
2-1 bus type:
AFDX: setting E/S (end system) to reset mode (or idle mode)
CAN: set the reception to 0V
ARINC429: set the output to 0V
2-2 exemplary discrete magnitude input
GND/OPEN: by means of internal pull-up power supply and reverse current suppressing diode, it is ensured that the input circuit is not lower than 13k omega +/-15%
28V/OPEN ensuring that the input circuit is not less than 30kΩ +/-15% by reverse current suppressing diode
2-3 typical discrete quantity output
GND/OPEN: controlling the interface circuit to an open state;
28V/OPEN: controlling the interface circuit to an open state;
2-4 typical analog input
Current type input: the input impedance of the switching control circuit is not lower than 120Ω
Voltage type input: the input impedance of the switching control circuit is not lower than 99kΩ
2-5 typical analog output
Current type output: controlling the analog quantity output control circuit to be in an open circuit state, wherein the output current is 0mA;
voltage type output: controlling the analog quantity output control circuit to be in an open circuit state, wherein the output voltage is 0V;
2-6 typical proximal sensor
Two-wire temperature sensor: setting the excitation input impedance not lower than 2kΩ, excitation on Rin _exc >2kΩ, rin_sense >20kΩ
Proximal sensor: acquisition inhibition (without excitation signal)
L/R VDT:Rin_primary>1MΩRin_secondary>99kΩ
The passivation state can be configurable by loading a configuration file containing interface information; the passivation operation is automatically switched and controlled by software/firmware according to the configuration information.
2. Initializing an operating modality
When the current working mode of the remote interface unit is an initialization working mode, the remote interface unit is initialized, and an interface circuit of the remote interface unit is in a default state; the remote interface unit switches out the current operating mode when the following external trigger conditions are met:
the method comprises the steps that 1, after initialization is finished, state discrete quantities of a remote interface unit are collected, and if the condition requirements of normal operation are met, the normal operation mode on the machine is switched;
the condition 2, the initialization is finished, the state discrete quantity of the remote interface unit is collected, and if the condition requirement of the maintenance work of the ground workshop is met, namely, the remote interface unit collects that the working mode is in the maintenance work mode of the ground workshop, the maintenance work mode of the ground workshop is switched;
3, self-checking errors during initialization, including position code checking errors or internal faults, and switching to a suspended working mode;
wherein the default state is configurable by loading a configuration file containing interface information, and the configurable information comprises: interface type, default state; the default state is defined by each aircraft system according to the application scene of the function, and when the interface circuit of the remote interface unit is in the default state, the system can be ensured to work normally completely; for digital buses, the remote interface unit can only manage the IMA platform default state. When the aircraft is powered up, the interface circuits of the remote interface units are in a default state when the systems are still not available, which is very useful for the smooth powering up and down of the various systems of the aircraft.
3. Normal working mode on board
When the current working mode of the remote interface unit is the normal working mode on the aircraft, the remote interface unit is in an installed state, detects an aircraft wheel load signal and judges the current installed state;
the installation state comprises two conditions of air and ground, all functional modules of the remote interface unit normally operate according to software scheduling under the air condition, and an interface circuit of the remote interface unit is switched from a default state to a state controlled by functional software; the remote interface unit switches out the current operating mode when the following external trigger conditions are met:
condition 1, reset trigger event, typically includes: the watchdog overtime, the recovery operation, the manual reset and the automatic reset are switched to a reset working mode;
the remote interface unit acquires that the working mode is in a ground loading mode, receives a loading request sent by a loader and switches to an on-board passive data loading working mode;
the remote interface unit is installed, meets the ground condition, receives a test request sent by ground maintenance test equipment and switches to an on-board interactive test working mode;
the temperature monitoring result exceeds the normal working range, such as lower than-40 ℃ or higher than +70 ℃, and switching to an overtemperature working mode; for example, the normal operating range for temperature monitoring is-40 ℃ to +70 ℃.
4. Normal working mode on board
When the current working mode of the remote interface unit is the normal working mode on the aircraft, the remote interface unit is in an installed state, detects an aircraft wheel load signal and judges the current installed state;
the installation state comprises two conditions of air and ground, all functional modules of the remote interface unit normally operate according to software scheduling under the air condition, and an interface circuit of the remote interface unit is switched from a default state to a state controlled by functional software; the remote interface unit switches out the current operating mode when the following external trigger conditions are met:
condition 1, reset trigger event, typically includes: the watchdog overtime, the recovery operation, the manual reset and the automatic reset are switched to a reset working mode;
the remote interface unit acquires that the working mode is in a ground loading mode, receives a loading request sent by a loader and switches to an on-board passive data loading working mode;
the remote interface unit is installed, meets the ground condition, receives a test request sent by ground maintenance test equipment and switches to an on-board interactive test working mode;
and 4, switching to an overtemperature working mode when the temperature monitoring result exceeds the normal working range.
5. On-board passive data loading working mode
When the current working mode of the remote interface unit is an on-board passive data loading working mode, the remote interface unit is in an installed state and detects that an aircraft wheel load signal is in a ground state, at the moment, a data loading instruction request sent by a data loader through a loading bus is received, the remote interface unit passively receives and solidifies data sent by an external data loader, and no special requirement is met for an interface circuit in the current working mode, so that the interface circuit is designed to be in a default state; the remote interface unit switches out the current operating mode when the following external trigger conditions are met:
the method comprises the following steps that 1, a remote interface unit receives a loading end instruction and switches to an initialization operation mode;
and 2, switching to an overtemperature working mode when the temperature monitoring result exceeds the normal working range.
6. Maintenance working mode of ground workshop
When the current working mode of the remote interface unit is a ground workshop maintenance working mode, the remote interface unit is in an uninstalled ground state, and a special test bench is used for carrying out bottom hardware or firmware upgrading, software upgrading and fault positioning in a laboratory; the current working mode may involve fault location of the interface circuit, and needs classification processing:
for the interface circuit related to fault positioning, setting the state of the I/O interface circuit by special fault positioning software according to the fault positioning requirement; other interface circuits without test requirements are set as default states; the remote interface unit switches out the current operating mode when the following external trigger conditions are met:
the method comprises the following steps that 1, a remote interface unit receives a ground workshop maintenance ending instruction and switches to an initialization operation mode;
and 2, switching to an overtemperature working mode when the temperature monitoring result exceeds the normal working range.
7. On-board interactive test working mode
When the current working mode of the remote interface unit is an on-board interactive test working mode, the remote interface unit is installed, and detects that an on-board wheel load signal is in a ground state, and at the moment, a test instruction request sent by an on-board maintenance system through a maintenance bus is received;
the remote interface unit is connected with the ground maintenance test equipment to perform interactive test, a maintainer provides interface circuit input excitation and sends a self-detection instruction to the remote interface unit through the test equipment, and the remote interface unit sends state data to the test equipment according to the self-detection instruction to acquire and control a corresponding output interface circuit so as to achieve the purpose of fault diagnosis;
the current working mode may involve testing of interface circuits, requiring classification processing: for the interface circuit related to the test, the state of the interface circuit is controlled by a self-detection command, and the state of the I/O interface circuit is set according to the maintenance requirement; other interface circuits without test requirements are set as default states; the remote interface unit switches out the current operating mode when the following external trigger conditions are met:
the method comprises the following steps that 1, a remote interface unit exits a current mode through reset operation and is switched to a reset working mode;
and 2, switching to an overtemperature working mode when the temperature monitoring result exceeds the normal working range.
8. Overtemperature working mode
When the current working mode of the remote interface unit is an overtemperature working mode, the remote interface unit is in a functional mode, the temperature detection circuit finds that the current working temperature range exceeds the preset working range, only the normal working of the temperature monitoring function is reserved, other functional circuits are stopped, and the interface circuit is in a passivation state; the remote interface unit switches out the current operating mode when the following external trigger conditions are met:
and switching to an initialization operation mode when the temperature monitoring result is in a normal working range.
In each of the above-described modes of operation, for the temperature ranges involved, it is customizable by the hardware engineer based on actual hardware design and engineering experience and loaded via configuration files.
9. Suspending mode of operation
When the current working mode of the remote interface unit is a suspending working mode, the remote interface unit stops working, and an interface circuit of the remote interface unit is in a passivation state; the remote interface unit switches out the current operating mode when the following external trigger conditions are met:
the remote interface unit is manually reset and switched to a reset mode of operation.
In the various modes of operation described above:
for a reset working mode, an initialization working mode, an on-board normal working mode, an on-board passive data loading working mode, a ground workshop maintenance working mode, an on-board interactive test working mode, an over-temperature working mode and a suspension working mode, when external power supply equipment stops supplying power to a remote interface unit, the remote interface unit is immediately switched from a current working mode to a power-down working mode;
for an initialization operation mode, an on-board normal operation mode, an on-board passive data loading operation mode, a ground workshop maintenance operation mode, an on-board interactive test operation mode, an over-temperature operation mode and a suspension operation mode, after a reset event is triggered, the method generally comprises the following steps: generally comprises: the watchdog is overtime, resumes operation, manual reset, automatic reset, and the remote interface unit immediately switches from the current operating mode to the reset operating mode.
The current mode of operation may be indicated by a set of "ground/open circuit" discrete quantity outputs, while other systems may also be notified via the data bus.
In the practical application process, the design requirements of different remote interface unit working modes can be met through the combination of the basic working mode and all or part of the self-defined working modes, and the purpose of generalized design is achieved.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should 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 equally; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.
Claims (9)
1. The method for switching the working modes of the universal remote interface unit is characterized in that the universal requirement is realized by the remote interface unit through determining a basic working mode and combining the basic working mode with a user-defined working mode; the remote interface unit comprises the following basic working modes:
a power-down working mode, a reset working mode, an initialization working mode, an on-board normal working mode, an on-board passive data loading working mode, a ground workshop maintenance working mode, an on-board interactive test working mode, an over-temperature working mode and a suspension working mode;
aiming at the current working mode of the remote interface unit, if the external trigger condition meets the switching condition of the current working mode, switching the current working mode;
when the current working mode of the remote interface unit is a power-down working mode, the remote interface unit is not electrified, the interface circuits of the remote interface unit are in an unpowered state, and the interface circuits have no influence on external interconnection equipment; the remote interface unit switches out the current operating mode when the following external trigger conditions are met:
the remote interface unit is electrified, and then the remote interface unit is switched to a reset working mode;
when the current working mode of the remote interface unit is a reset working mode, the internal components of the remote interface unit are kept in a reset state, and an interface circuit of the remote interface unit is in a passivation state; the remote interface unit switches out the current operating mode when the following external trigger conditions are met:
the reset state of the component is kept to be ended, and the operation mode is switched to an initialization operation mode;
the passivation state refers to:
(1) If the power supply of the interface circuit has the power-on and power-off control capability, the power supply control of the interface circuit is switched to the power-off state, and the state of the interface circuit is the passivation state;
(2) Classifying interface circuits without power supply control according to different interface types, and setting the condition that each type reaches a passivation state;
the passivation state can be configurable by loading a configuration file containing interface information; the passivation operation is automatically switched and controlled by software/firmware according to the configuration information.
2. The method for switching operation modes of a universal remote interface unit according to claim 1, wherein when the current operation mode of the remote interface unit is an initialization operation mode, the remote interface unit is initialized, and an interface circuit of the remote interface unit is in a default state; the remote interface unit switches out the current operating mode when the following external trigger conditions are met:
the method comprises the steps that 1, after initialization is finished, state discrete quantities of a remote interface unit are collected, and if the condition requirements of normal operation are met, the normal operation mode on the machine is switched;
the condition 2, the initialization is finished, the state discrete quantity of the remote interface unit is collected, and if the condition requirement of the maintenance work of the ground workshop is met, namely, the remote interface unit collects that the working mode is in the maintenance work mode of the ground workshop, the maintenance work mode of the ground workshop is switched;
3, self-checking errors during initialization, including position code checking errors or internal faults, and switching to a suspended working mode;
wherein the default state is configurable by loading a configuration file containing interface information, and the configurable information comprises: interface type, default state; the default state is defined by each aircraft system according to the application scene of the function, and when the interface circuit of the remote interface unit is in the default state, the system can be ensured to work normally completely; for digital buses, the remote interface unit can only manage the IMA platform default state.
3. The method for switching a working mode of a universal remote interface unit according to claim 1, wherein when a current working mode of the remote interface unit is an on-board normal working mode, the remote interface unit is in an installed state and detects an aircraft wheel load signal to determine the current installed state;
the installation state comprises two conditions of air and ground, all functional modules of the remote interface unit normally operate according to software scheduling under the air condition, and an interface circuit of the remote interface unit is switched from a default state to a state controlled by functional software; the remote interface unit switches out the current operating mode when the following external trigger conditions are met:
condition 1, reset trigger event, typically includes: the watchdog overtime, the recovery operation, the manual reset and the automatic reset are switched to a reset working mode;
the remote interface unit acquires that the working mode is in a ground loading mode, receives a loading request sent by a loader and switches to an on-board passive data loading working mode;
the remote interface unit is installed, meets the ground condition, receives a test request sent by ground maintenance test equipment and switches to an on-board interactive test working mode;
and 4, switching to an overtemperature working mode when the temperature monitoring result exceeds the normal working range.
4. The method for switching the working modes of the universal remote interface unit according to claim 1, wherein when the current working mode of the remote interface unit is an on-board passive data loading working mode, the remote interface unit is in an installed state and detects that an aircraft wheel load signal is in a ground state, at the moment, a data loading instruction request sent by a data loader through a loading bus is received, the remote interface unit passively receives and solidifies data sent by an external data loader, and the interface circuit is designed to be in a default state because no special requirement exists on the interface circuit in the current working mode; the remote interface unit switches out the current operating mode when the following external trigger conditions are met:
the method comprises the following steps that 1, a remote interface unit receives a loading end instruction and switches to an initialization operation mode;
and 2, switching to an overtemperature working mode when the temperature monitoring result exceeds the normal working range.
5. The method for switching the working modes of the universal remote interface unit according to claim 1, wherein when the current working mode of the remote interface unit is a ground workshop maintenance working mode, the remote interface unit is in an uninstalled ground state, and a special test bench is used for carrying out bottom hardware or firmware upgrading, software upgrading and fault positioning in a laboratory; the current working mode may involve fault location of the interface circuit, and needs classification processing:
for the interface circuit related to fault positioning, setting the state of the I/O interface circuit by special fault positioning software according to the fault positioning requirement; other interface circuits without test requirements are set as default states; the remote interface unit switches out the current operating mode when the following external trigger conditions are met:
the method comprises the following steps that 1, a remote interface unit receives a ground workshop maintenance ending instruction and switches to an initialization operation mode;
and 2, switching to an overtemperature working mode when the temperature monitoring result exceeds the normal working range.
6. The method for switching working modes of a universal remote interface unit according to claim 1, wherein when the current working mode of the remote interface unit is an on-board interactive test working mode, the remote interface unit is installed and detects that an on-board wheel load signal is in a ground state, and at the moment, a test instruction request sent by an on-board maintenance system through a maintenance bus is received;
the remote interface unit is connected with the ground maintenance test equipment to perform interactive test, a maintainer provides interface circuit input excitation and sends a self-detection instruction to the remote interface unit through the test equipment, and the remote interface unit sends state data to the test equipment according to the self-detection instruction to acquire and control a corresponding output interface circuit so as to achieve the purpose of fault diagnosis;
the current working mode may involve testing of interface circuits, requiring classification processing: for the interface circuit related to the test, the state of the interface circuit is controlled by a self-detection command, and the state of the I/O interface circuit is set according to the maintenance requirement; other interface circuits without test requirements are set as default states; the remote interface unit switches out the current operating mode when the following external trigger conditions are met:
the method comprises the following steps that 1, a remote interface unit exits a current mode through reset operation and is switched to a reset working mode;
and 2, switching to an overtemperature working mode when the temperature monitoring result exceeds the normal working range.
7. The method for switching the working modes of the universal remote interface unit according to claim 1, wherein when the current working mode of the remote interface unit is an overtemperature working mode, the remote interface unit is in the functional mode, the temperature detection circuit finds that the current working temperature range exceeds the preset working range, only the normal working of the temperature monitoring function is reserved, other functional circuits are stopped, and the interface circuit is in a passivation state; the remote interface unit switches out the current operating mode when the following external trigger conditions are met:
and switching to an initialization operation mode when the temperature monitoring result is in a normal working range.
8. The method for switching operation modes of a universal remote interface unit according to claim 1, wherein when the current operation mode of the remote interface unit is a suspended operation mode, the remote interface unit stops operating, and an interface circuit of the remote interface unit is in a passivation state; the remote interface unit switches out the current operating mode when the following external trigger conditions are met:
the remote interface unit is manually reset and switched to a reset mode of operation.
9. The method for switching operation modes of a universal remote interface unit according to claim 1, wherein for a reset operation mode, an initialization operation mode, an on-board normal operation mode, an on-board passive data loading operation mode, a ground shop maintenance operation mode, an on-board interactive test operation mode, an over-temperature operation mode and a suspension operation mode, when an external power supply device stops supplying power to the remote interface unit, the remote interface unit is immediately switched from a current operation mode to a power-down operation mode;
for an initialization operation mode, an on-board normal operation mode, an on-board passive data loading operation mode, a ground workshop maintenance operation mode, an on-board interactive test operation mode, an over-temperature operation mode and a suspension operation mode, after a reset event is triggered, the method generally comprises the following steps: generally comprises: the watchdog is overtime, resumes operation, manual reset, automatic reset, and the remote interface unit immediately switches from the current operating mode to the reset operating mode.
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