Architecture of the Remote Terminal

Abstract

An architecture of a remote terminal is provided in an embodiment of the present disclosure, belonging to the technical field of the architecture design of an airborne computer. It includes a high-speed fault-tolerant bus end system, a high-speed control bus node protocol layer, terminal processing, a secondary power supply as a power source, an interlock control logic, a multi-stage switch, and a bus isolation module. The two channels are strongly independent and weakly coupled with each other. To save space resources, it can receive control instructions to be executed through a control information network, perform local monitoring functions on controlled devices, transmit status data information of remote devices and controlled devices to a master control management computer through the control information network, transmit status data information of remote devices and controlled devices through a data information network, and at the same time act as a gateway node to realize interconnection and communication between the control information network and the data information network.

Description

Technical Field

[0001] The present invention belongs to the technical field of airborne computer architecture design, and particularly relates to an architecture of a remote terminal. Background Art

[0002] For a new airborne electronic equipment control system to improve the reliability and safety characteristics of the whole system, a new distributed network architecture will be adopted. One of the most significant features of this architecture is that the main control computing component and the control execution component are physically separated through a bus in the form of independent node machines in the network. The remote terminal processor is the node machine that executes instruction control output at the end of the network data. The basic functions that this node machine should have include: receiving control instructions to be executed through the control information network, local monitoring function of the controlled equipment, transmitting status data information of the remote device and the controlled equipment to the main control management computer through the control information network, transmitting status data information of the remote device and the controlled equipment through the data information network, and at the same time acting as a gateway node to realize the interconnection and communication between the control information network and the data information network.

[0003] Therefore, it is necessary to design for a new type of airborne equipment with the use scenario of a remote terminal to meet the use requirements of the airborne environment. Summary of the Invention

[0004] In view of this, the embodiments of the present disclosure provide a new data interaction structure to improve the efficiency of data interaction.

[0005] An architecture of a remote terminal, applicable to the control of a controlled equipment, includes a high-speed fault-tolerant bus end system, a high-speed control bus node protocol layer, terminal processing, a secondary power supply as a power source, an interlock control logic, a multi-stage switch, and a bus isolation module, wherein: the high-speed fault-tolerant bus end system and the high-speed control bus node protocol layer act as gateways, communicate with corresponding external devices respectively, input data to the terminal processing, and feedback the output data of the terminal processing. The terminal processing is provided with a remote local monitoring module for monitoring its own working state and periodically detecting the working state of the secondary power supply; the multi-stage switch and the bus isolation module are communicatively connected; the terminal processing controls the working parameters of the controlled equipment;

[0006] The interlock control logic is communicatively connected with the secondary power supply, the multi-stage switch, the remote local monitoring module, and the bus isolation module. When the secondary power supply reports a fault signal to the interlock control logic, and when the remote local monitoring module feeds back the fault information of the terminal processing and / or the secondary power supply, the interlock control logic controls the multi-stage switch to perform a turn-off operation, and the status information of the turn-off operation is sent to the bus isolation module and fed back to the interlock control logic by the bus isolation module.

[0007] Beneficial effects:

[0008] It can receive control instructions that need to be executed through the control information network, perform local monitoring functions on controlled devices, transmit status data information of remote devices and controlled devices to the master control management computer through the control information network, and transmit status data information of remote devices and controlled devices through the data information network. At the same time, as a gateway node, it realizes interconnection communication between the control information network and the data information network. Description of the Drawings

[0009] To more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0010] Figure 1 It is a structural diagram provided by the present invention. Detailed Embodiments

[0011] The embodiments of the present disclosure will be described in detail below with reference to the drawings.

[0012] The following illustrates the embodiments of the present disclosure through specific specific examples. Those skilled in the art can easily understand other advantages and effects of the present disclosure from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. The present disclosure can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present disclosure without creative efforts belong to the scope of protection of the present disclosure.

[0013] It should be noted that the following describes various aspects of the embodiments within the scope of the appended claims. It should be obvious that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is only illustrative. Based on the present disclosure, those skilled in the art should understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects described herein can be used to implement the device and / or practice the method. In addition, this device can be implemented and this method can be practiced using other structures and / or functions in addition to one or more of the aspects described herein.

[0014] As Figure 1 shown in the architecture of the remote terminal, which is applicable to the control of controlled devices, including a high-speed fault-tolerant bus end system, a high-speed control bus node protocol layer, terminal processing, a secondary power supply as the power source, interlock control logic, and a multi-stage switch and bus isolation module. Among them: The high-speed fault-tolerant bus end system and the high-speed control bus node protocol layer act as gateways, communicate with corresponding external devices respectively, input data to the terminal processing, and feedback the output data of the terminal processing. The terminal processing is provided with a remote local monitoring module for monitoring its own working state and periodically detecting the working state of the secondary power supply; The multi-stage switch and the bus isolation module are communicatively connected; The terminal processing controls the working parameters of the controlled device;

[0015] The interlock control logic is communicatively connected to the secondary power supply, the multi-stage switch, the remote local monitoring module, and the bus isolation module. When the secondary power supply reports a fault signal to the interlock control logic, and when the remote local monitoring module feeds back the fault information of the terminal processing and / or the secondary power supply, the interlock control logic controls the multi-stage switch to perform a turn-off operation. The status information of the turn-off operation is sent to the bus isolation module and fed back to the interlock control logic and the terminal processing by the bus isolation module. The terminal processing then feeds back information to the high-speed fault-tolerant bus end system and the high-speed control bus node protocol layer through an interface.

[0016] As a specific implementation provided in this case, the terminal processing further includes a data collection and reporting module, an instruction extraction module, and an instruction output module. Among them:

[0017] The instruction extraction module receives the instructions from the high-speed fault-tolerant bus end system and the high-speed control bus node protocol layer and transmits them to the data collection and reporting module. When the data collection and reporting module receives the instructions, it feeds back information through the high-speed fault-tolerant bus end system and the high-speed control bus node protocol layer, and transmits the instructions to the instruction output module to output instructions to the controlled device.

[0018] 0 As a specific implementation provided in this case, the terminal processing is connected to a watchdog circuit through a data bus. The remote local monitoring module is communicatively connected to the data collection and reporting module, including a wrap-around monitoring unit, a signal validity judgment unit, and a software monitoring unit. Among them:

[0019] The wrap-around monitoring unit is used to monitor the actual response status of the controlled device to the control signal;

[0020] The signal validity judgment unit is used to judge whether the instruction output by the instruction extraction module is a valid signal. If it is valid, it is sent to the instruction output module. If it is invalid, it is not output and is fed back through the data collection and reporting module. And periodically judge whether the feedback signal of the secondary power supply is a fault signal and send it to the software monitoring unit;

[0021] The software monitoring unit is used to detect the status of the watchdog circuit and report the interlock control logic fault information. When the interlock control logic receives any fault signal, it controls the multi-stage switch to perform a turn-off operation, and the status information of the turn-off operation is sent to the bus isolation module, which feeds back to the interlock control logic.

[0022] Or the data collection and reporting module, which feeds back to the high-speed fault-tolerant bus terminal system and the high-speed 5 control bus node protocol layer. The high-speed fault-tolerant bus terminal system and the high-speed control bus node protocol layer then transmit data to external devices to identify the type of fault signal.

[0023] The bus isolation module also receives the status information of the controlled device, monitors whether the monitoring instruction is executed, and whether it stops working when the multi-stage switch is disconnected. The multi-stage switch, for example, a two-stage switch, is respectively connected to the output end of the isolation buffer module and the output end of the drive output module.

[0024] As a specific implementation manner provided in this case, the interlock control logic is provided with a fault indication unit. When the interlock control logic receives a fault signal, it performs signal feedback through the fault indication unit. The fault indication unit can be connected to an alarm indication device, for example, an alarm lamp or a sound alarm player.

[0025] As a specific implementation manner provided in this case, it further includes an isolation buffer

[0026] module and a drive output module that are sequentially connected to the instruction output module. The drive output module is respectively connected to the controlled device and the bus isolation module, and the 5 isolation buffer module is connected to the bus isolation module;

[0027] The isolation buffer module is used to buffer the output data of the output module, and is connected to the instruction output module in a bus connection manner. It is only used to transmit the control instructions of the controlled device, isolate other signals, and transmit the control instructions of the controlled device to the drive output module in a preset order. The drive output module transmits instructions to the controlled device in sequence;

[0028] The output ends of the isolation buffer module and the drive output module are respectively connected to the multi-stage switch and are respectively connected to the bus isolation module.

[0029] As a specific implementation manner provided in this case, the high-speed fault-tolerant bus terminal system includes port A and port B, and port A and port B are backup to each other and transmit signals simultaneously, transmitting signals to the same external device;

[0030] The high-speed control bus node protocol layer is provided with port 1 and port 2, and port 1 and port 2 are connected to different external devices.

[0031] The above structure has two-way signal feedback and the display of a fault signal, improving the usage efficiency and safety of the overall architecture.

[0032] See Figure 1 , and the detailed content is introduced as follows:

[0033] 1. Instruction reception: The remote terminal device receives control instructions for operating the controlled device from the system host computer through the control information network communication port. The high-speed control bus node protocol processing function and the communication physical ports 0 and 1 are integrated in a functional area module, and this functional area module is connected to the terminal processing function part through the bus.

[0034] 2. Terminal processing: The terminal processing function part of the remote terminal device consists of sub-functions such as "data collection and reporting", "instruction extraction", "instruction output", and "remote local monitoring" (including: loopback monitoring, signal validity discrimination, software monitoring); the remote terminal combines the received control instructions with the comprehensive judgment results of loopback monitoring, signal validity discrimination, and its own real-time software monitoring to form output control data for the controlled device.

[0035] 3. Safety monitoring and output: The terminal processing function is connected to the power supply monitoring function through the bus and can obtain the result data of the power supply monitoring for the secondary power supply; the terminal processing function realizes the timed "feeding the dog" operation by connecting to the watchdog monitoring function through the bus; the terminal processing function is connected to the interlock control logic function through the bus, the output of the watchdog function is connected to the interlock control logic function, and the status signal output by the power supply monitoring is connected to the interlock control logic function. The interlock control logic function combines the above signals to form two groups of control signals for controlling the two-level switches in the remote terminal device, and forms a group of indication signals connected to the fault indication function, and the fault indication function outputs indication signals to the outside; the terminal processing function starts to form the output control for the controlled device by connecting to the isolation buffer function through the bus.

[0036] 4. Loopback monitoring: The loopback monitoring of the controlled device is designed to have a total of four levels of inner and outer layers as shown in the figure. The three-level loopback monitoring points in the inner layer are respectively set before the switch after isolation output and at two points before and after the switch after drive output. The one-level loopback in the outer layer is used to monitor the actual response status of the controlled device to the control signal. The four-level loopback can be recognized by the terminal processing function after bus isolation and participates in the monitoring and processing of data.

[0037] 5. The terminal processing function is connected to the data exchange area through the bus to realize data transmission with the high-speed fault-tolerant bus end system, and the high-speed fault-tolerant bus end system realizes connection and communication with the data information network through the dual-redundant ports A and B.

[0038] 6. Status Output: The control output data and monitoring status data of the controlled device by the remote terminal can be transmitted to the main control computer through the control information network bus and can be transmitted to the external core processing computer through the data information network communication bus for the external system to identify the working status of the controlled device and support the real-time operation of a series of system functions such as control integration, status recording, information decision-making, and health monitoring.

[0039] As described above, it is only the specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present disclosure should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. An architecture of a remote terminal, applicable to the control of controlled devices, characterized in that it includes a high-speed fault-tolerant bus end system, a high-speed control bus node protocol layer, terminal processing, a secondary power supply as the power source, interlock control logic, a multi-stage switch, and a bus isolation module. The terminal processing includes an instruction extraction module, wherein: the high-speed fault-tolerant bus end system and the high-speed control bus node protocol layer act as gateways, communicate with corresponding external devices respectively, input data to the terminal processing, and feedback the output data of the terminal processing. The terminal processing is provided with a remote local monitoring module for monitoring its own working state and periodically detecting the working state of the secondary power supply; the multi-stage switch and the bus isolation module are communicatively connected; the terminal processing controls the working parameters of the controlled devices. The interlock control logic is communicatively connected with the secondary power supply, the multi-stage switch, the remote local monitoring module, and the bus isolation module. When the secondary power supply reports a fault signal to the interlock control logic, and when the remote local monitoring module feeds back the fault information of the terminal processing and / or the secondary power supply, the interlock control logic controls the multi-stage switch to perform a turn-off operation, and the status information of the turn-off operation is sent to the bus isolation module and fed back to the interlock control logic by the bus isolation module. The terminal processing is connected with a watchdog circuit through a data bus. The remote local monitoring module is communicatively connected with a data collection and reporting module. The instruction extraction module is used to receive instructions from the high-speed fault-tolerant bus end system and the high-speed control bus node protocol layer and transmit them to the data collection and reporting module. It further includes a wrap-around monitoring unit, a signal validity judgment unit, and a software monitoring unit, wherein: the wrap-around monitoring unit is used to monitor the actual response status of the controlled device to the control signal; the signal validity judgment unit is used to judge whether the instruction output by the instruction extraction module is a valid signal. If it is valid, it is sent to the instruction output module. If it is invalid, it is not output and is fed back through the data collection and reporting module and periodically judges whether the secondary power supply feedback signal is a fault signal and sends the judgment result to the software monitoring unit; the software monitoring unit is used to detect the status of the watchdog circuit and report fault information to the interlock control logic. When the interlock control logic receives any one of the fault signals, it controls the multi-stage switch to perform a turn-off operation, and the status information of the turn-off operation is sent to the bus isolation module and fed back to the interlock control logic or the data collection and reporting module by the bus isolation module.

2. The architecture of the remote terminal according to claim 1, characterized in that The terminal processing further includes an instruction output module and a data collection and reporting module, wherein: When the data collection and reporting module receives an instruction, it performs information feedback through the high-speed fault-tolerant bus end system and the high-speed control bus node protocol layer, and transmits the instruction to the instruction output module to output the instruction to the controlled device.

3. The architecture of the remote terminal according to claim 2, characterized in that, The interlock control logic is provided with a fault indication unit, and when the interlock control logic receives a fault signal, it performs signal feedback through the fault indication unit.

4. The architecture of the remote terminal according to claim 3, characterized in that, It further includes an isolation buffer module and a drive output module that are sequentially connected to the instruction output module. The drive output module is respectively connected to a controlled device and a bus isolation module, and the isolation buffer module is connected to the bus isolation module; The isolation buffer module is used to buffer the output data of the output module and transmit it to the drive output module in a preset order, and the drive output module transmits instructions to the controlled device in a time sequence; The output ends of the isolation buffer module and the drive output module are respectively connected to the multi-stage switch and are respectively connected to the bus isolation module.

5. The architecture of the remote terminal according to claim 1, characterized in that, The high-speed fault-tolerant bus terminal system includes port A and port B, and port A and port B are backed up each other and transmit signals simultaneously to the same external device; The high-speed control bus node protocol layer is provided with port 1 and port 2, and port 1 and port 2 are connected to different external devices.

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