CN112416836B - Method for controlling RT address allocation of hanging point nodes in distributed hanging object management system - Google Patents
Method for controlling RT address allocation of hanging point nodes in distributed hanging object management system Download PDFInfo
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Abstract
The invention provides a method for controlling RT address allocation of a hanging point node in a distributed hanging object management system, which adopts a control mode of electrifying one by one at different times, a central control node reads interlocking signals of the hanging point node one by one after electrifying, controls the electrifying of the hanging point node after recognizing the existence of the hanging point node, then establishes communication with the hanging point node by a default RT address, and sets a new RT address of the hanging point node through a GJB289A bus by the central control node after the communication is normal; and after the central control node polls all the hanging point nodes, all the hanging point nodes automatically acquire new RT addresses and then enter a working mode by the new RT addresses. The invention reduces the signal quantity between the central control node and the hanging point node on the distributed hanging object management system, thereby reducing the volume and weight of the cable connecting the central control node and the hanging point node.
Description
Technical Field
The invention relates to the field of airplane avionics, in particular to a communication control method in a suspension management system, which is used for automatic distribution control of RT addresses of suspension nodes when the suspension nodes in a distributed suspension management system configuration are communicated with a central control node through a GJB289A bus.
Background
The suspension management system is an important component of an avionic system of a combat aircraft, and is used for completing state identification and launch control management of various suspensions (guidance/non-guidance bombs, air-to-air missiles, aeroguns, rocket missiles, various types of pods and the like) carried by the aircraft. In terms of physical or functional configurations, the suspension management system is generally divided into two basic configurations, namely a centralized configuration and a distributed configuration; in a distributed configuration, a suspended object management system generally consists of a central control node and a plurality of hanging point nodes, wherein the central control node and the hanging point nodes mainly adopt GJB289A buses for information exchange, and sometimes adopt other buses for backup communication.
The GJB289A bus is a military multi-channel data transmission bus, and the bus configuration generally comprises a subsystem with a Bus Controller (BC) function device and no more than 30 Remote Terminals (RT). The control right of information transmission in the GJB289A bus configuration is exclusively owned by BC, the working mode of the bus configuration adopts an instruction/response type asynchronous mode, the information transmission is carried out in a half-duplex mode, and the information transmission direction is divided into: three forms, BC to RT, RT to BC, and RT to RT. Addressing the RT in the bus message uses five bits of data (encoded) and since 0 and 31 are private addresses, there are typically no more than 30 subsystems with Remote Terminals (RT) on the bus.
Conventionally, for a distributed suspension management system, the RT address of a suspension point node is composed of a set of six discrete quantities (five binary weighted address bit discrete quantities A0 to A4 and one parity discrete quantity), and the suspension point node determines its own RT address according to the state of the five discrete quantities A0 to A4 input by a central control node.
Because the central control node and the hanging point node are installed at different positions on the combat aircraft (the central control node is generally installed in an aircraft equipment cabin, and the hanging point node is generally installed at a position close to a pylon on a wing), the wiring of a cable connecting the central control node and the hanging point node is complex, and the weight of the cable is too heavy.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a method for controlling the RT address allocation of hanging point nodes in a distributed suspension management system. The invention aims to design a novel RT address allocation control method on a distributed suspension management system to reduce the number of signals between a central control node and a hanging point node, thereby reducing the volume and weight of a cable connecting the central control node and the hanging point node.
The technical scheme adopted by the invention for solving the technical problem comprises the following steps:
the method comprises the following steps: each hanging point node outputs an interlocking signal to the central control node, and the interlocking signal is used for the central control node to identify the existence of the hanging point node; the central control node outputs a power-on signal to each hanging point node, and the power-on signal is used for controlling the power-on of the hanging point node by the central control node; the information exchange between the central control node and the hanging point nodes is carried out by adopting a GJB289A bus, the central control node is used as a transmission schedule of BC control bus information in a GJB289A bus network, each hanging point node is an RT in the GJB289A bus network, and the central control node sets an initial value of a variable n to be 1 at the beginning of distribution;
step two: judging whether the n value is larger than the number of the hanging points of the fighter plane, and when the condition is met, finishing distribution; when the condition is not met, the central control node reads the interlocking signal state of the hanging point corresponding to the n value;
step three: judging whether the interlocking signal is effective or not, and powering on the hanging point node by the central control node when the interlocking signal is effective; when the n value is invalid, adding 1 to the n value, and jumping to the step two;
step four: the central control node establishes GJB289A bus communication with the hanging point node corresponding to the n value through a default RT address, the communication is normal and is not overtime, and the central control node sets a new RT address to the hanging point node n through the GJB289A bus; jumping to the sixth step after abnormal communication or overtime communication;
step five: the central control node establishes GJB289A bus communication with the hanging point node corresponding to the n value by using the new RT address, the communication is normal and is not overtime, the n value is added with 1, and the step II is skipped; skipping to the sixth step after abnormal communication or overtime communication;
step six: and the central control node determines the failure of the node n of the hanging point, reports the failure to the display control system, simultaneously powers off the node n of the hanging point, adds 1 to n, and then skips to the step two.
The RT address is different from the value of n of the hanging point and is larger than the value of n.
And the new RT address has the same value as the hanging point n or is n +10.
The flow of the RT address automatic allocation process of the hanging point node is as follows:
step 1: after the hanging point node is powered on, establishing GJB289A bus communication with the central control node by using a default RT address;
step 2: judging whether the communication is normal or not, and jumping to the step 1 when the communication is abnormal; when the communication is normal, receiving a new RT address sent by the central control node through a GJB289A bus;
and step 3: the hanging point node establishes GJB289A bus communication with the central control node by using the new RT address;
and 4, step 4: judging whether the communication is normal or not, and jumping to the step 3 when the communication is abnormal; when the communication is normal, the allocation is finished.
The invention has the advantages that the signal quantity between the central control node and the hanging point node on the distributed hanging object management system is reduced, thereby reducing the volume and the weight of the cable connecting the central control node and the hanging point node.
Drawings
Fig. 1 is a schematic diagram of a physical architecture of a distributed pendant management system according to the present invention.
Fig. 2 is a schematic diagram of the working flow of the central control node software designed by the present invention.
Fig. 3 is a schematic diagram of a software workflow of a hanging point node designed by the present invention.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
The invention is realized in such a way that an interlocking signal is generally designed between a central control node and a hanging point node on a distributed suspension management system, and after the interlocking signal is traditionally used for identifying the existence of the hanging point node, a control mode of synchronously electrifying the central control node and the hanging point node is adopted, and all the hanging point nodes can simultaneously acquire the RT addresses of the hanging point nodes through six discrete quantities output to the hanging point nodes by the central control node. The working principle of the invention adopts a control mode of electrifying one by one at different time, after the central control node is electrified, the interlocking signals of the hanging point nodes are read one by one, after the hanging point nodes are identified to exist, the hanging point nodes are controlled to be electrified, then the central control node establishes communication with the hanging point nodes by using a default RT address, and after the communication is normal, the central control node sets a new RT address of the hanging point nodes through a GJB289A bus; and after the central control node polls all the hanging point nodes, all the hanging point nodes automatically acquire new RT addresses and then enter a working mode by the new RT addresses.
As shown in fig. 1, a distributed hangar management system is composed of a central control node and a plurality of mounting point nodes, wherein the number (n) of the mounting point nodes is determined according to the specific mounting capacity of different combat airplanes.
Fig. 2 is a schematic diagram of a software workflow of a process for automatically allocating RT addresses of a central control node, where the process is as follows:
the method comprises the following steps: each hanging point node outputs an interlocking signal (ground/open discrete quantity) to the central control node, and the interlocking signal is used for the central control node to identify the existence of the hanging point node; the central control node outputs a power-on signal (ground/open discrete quantity) to each hanging point node, and the power-on signal is used for controlling the power-on of the hanging point node by the central control node; the method comprises the following steps that a GJB289A bus is adopted between a central control node and hanging point nodes for information exchange, the central control node is used as a transmission schedule of BC control bus information in a GJB289A bus network, each hanging point node is an RT in the GJB289A bus network, and the central control node sets an initial value of a variable n to be 1 at the beginning of distribution;
step two: judging whether the n value is larger than the number of hanging points of the fighter plane or not, and finishing distribution when the condition is met; when the condition is not met, the central control node reads the interlocking signal state of the hanging point corresponding to the n value;
step three: judging whether the interlocking signal is effective or not, and if so, powering on the hanging point node by the central control node; when the n value is invalid, adding 1 to the n value, and jumping to the step two;
step four: the central control node establishes GJB289A bus communication with the hanging point node corresponding to the n value according to a default RT address (different from the hanging point n value, and generally selects a numerical value larger than n), the communication is normal and is not overtime, and the central control node sets a new RT address (generally the same as the hanging point n value or a simple mathematical relationship, such as n +10 and the like) to the hanging point node n through the GJB289A bus; jumping to the sixth step after abnormal communication or overtime communication;
step five: the central control node establishes GJB289A bus communication with the hanging point node corresponding to the n value by using a newly set RT address (generally the same as the hanging point n value and the same as the new RT address in the step four), the communication is normal and is not overtime, the n value is added by 1, and the step two is skipped; and after the communication is abnormal or the communication is overtime, jumping to the step six.
Step six: and the central control node determines the failure of the hanging point node n, reports the failure to the display control system, and simultaneously powers off the hanging point node n, adds 1 to n and then jumps to the step two.
As shown in fig. 3, a software workflow diagram of an automatic RT address assignment process of a suspension point node is as follows:
the method comprises the following steps: after the hanging point node is powered on, the hanging point node establishes GJB289A bus communication with the central control node by using a default RT address (the same as the default RT address adopted in the step four of the central control node).
Step two: judging whether the communication is normal or not, and jumping to the first step when the communication is abnormal; and when the communication is normal, receiving a new RT address (the same as the new RT address adopted in the fourth step of the central control node) sent by the central control node through the GJB289A bus.
Step three: and the hanging point node establishes GJB289A bus communication with the central control node by using the new RT address (the address is the same as the new RT address adopted in the step five of the central control node).
Step four: judging whether the communication is normal or not, and jumping to the third step when the communication is abnormal; when the communication is normal, the allocation is finished.
Claims (3)
1. A method for controlling RT address allocation of hanging point nodes in a distributed hangar management system is characterized by comprising the following steps:
the method comprises the following steps: each hanging point node outputs an interlocking signal to the central control node, and the interlocking signal is used for the central control node to identify the existence of the hanging point node; the central control node outputs a power-on signal to each hanging point node, and the power-on signal is used for controlling the power-on of the hanging point node by the central control node; the information exchange between the central control node and the hanging point nodes is carried out by adopting a GJB289A bus, the central control node is used as a transmission schedule of BC control bus information in a GJB289A bus network, each hanging point node is an RT in the GJB289A bus network, and the central control node sets an initial value of a variable n to be 1 at the beginning of distribution;
step two: judging whether the n value is larger than the number of hanging points of the fighter plane or not, and finishing distribution when the condition is met; when the condition is not met, the central control node reads the interlocking signal state of the hanging point corresponding to the n value;
step three: judging whether the interlocking signal is effective or not, and if so, powering on the hanging point node by the central control node; when the n value is invalid, adding 1 to the n value, and jumping to the step two;
step four: the central control node establishes GJB289A bus communication with the hanging point node corresponding to the n value through a default RT address, the communication is normal and is not overtime, and the central control node sets a new RT address to the hanging point node n through the GJB289A bus; skipping to the sixth step after abnormal communication or overtime communication;
step five: the central control node establishes GJB289A bus communication with the hanging point node corresponding to the n value through a new RT address, the communication is normal and is not overtime, the n value is added with 1, and the step II is skipped; jumping to the sixth step after abnormal communication or overtime communication;
step six: the central control node determines that the hanging point node n has a fault, reports the fault to the display control system, and meanwhile, powers off the hanging point node n, adds 1 to n, and then jumps to the second step;
the flow of the RT address automatic allocation process of the hanging point node is as follows:
step 1: after the hanging point node is powered on, establishing GJB289A bus communication with the central control node by using a default RT address;
step 2: judging whether the communication is normal or not, and jumping to the step 1 when the communication is abnormal; when the communication is normal, receiving a new RT address sent by the central control node through a GJB289A bus;
and step 3: the hanging point node establishes GJB289A bus communication with the central control node by using the new RT address;
and 4, step 4: judging whether the communication is normal or not, and jumping to the step 3 when the communication is abnormal; when the communication is normal, the allocation is finished.
2. The method for controlling the RT address allocation of the hanging point nodes in the distributed hangar management system according to claim 1, characterized in that:
and the RT address is different from the value of n of the hanging point and is larger than the value of n.
3. A method for controlling RT address allocation of hanging point nodes in a distributed hangar management system according to claim 1, characterized in that:
and the new RT address has the same value as the n value of the hanging point or is n +10.
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