CN108802514B

CN108802514B - Ground test system and method based on ring bus network

Info

Publication number: CN108802514B
Application number: CN201810295040.1A
Authority: CN
Inventors: 邓郡
Original assignee: Beijing Runke General Technology Co Ltd
Current assignee: Beijing Runke General Technology Co Ltd
Priority date: 2018-03-30
Filing date: 2018-03-30
Publication date: 2020-07-03
Anticipated expiration: 2038-03-30
Also published as: CN108802514A

Abstract

The invention provides a ground test system and a ground test method based on a ring bus network, which are characterized in that a controller is used for acquiring test configurations set by a user for m test networks, generating control instructions corresponding to the test configurations and respectively issuing the control instructions to L switching devices, so that each switching device switches and selects a device source corresponding to the test configuration according to the control instructions and accesses the device source into the m test networks, thereby automatically constructing m parallel independent test configurations, facilitating simultaneous ground integration tests on the basis of not changing airborne bus network resources, and effectively improving the ground test efficiency and the repeated utilization rate of airborne bus network resources.

Description

Ground test system and method based on ring bus network

Technical Field

The invention relates to the technical field of avionics, in particular to a ground test system and method based on a ring bus network.

Background

With the development of the aircraft avionics system technology, the structure and the function of the aircraft avionics system become more and more complex. In order to ensure that the airborne electronic equipment in the avionics system of the airplane can work normally when the airplane runs, the ground integration test needs to be carried out on the airborne electronic equipment in the avionics system of the airplane in advance. In the process of carrying out ground integration test, the function verification and integration of airborne electronic equipment of various subsystems such as flight control, mission, electromechanical and weapon need to be carried out on the ground. As the ground integrated test involves more professional departments, the general responsible party of the test needs to decompose the test flow and arrange the test resources and the tested objects needed by the tests of different professional departments and general departments.

The existing test flow is that the general department establishes a system integration test room, provides a set of complete test system, each professional department provides test equipment such as a test piece and a matched exciter simulator which are respectively responsible, and the test system provided by the general department is utilized to firstly carry out the test of a single subsystem and then gradually carry out the cross-linking test among a plurality of subsystems, thereby finally completing the integration test of the whole system.

Under the test flow, the test requirements of different professional departments can be met through test configuration switching, and then the tests of the professional departments are sequentially carried out, but airborne bus network resources are not reusable, when a professional department clears faults, the tests of other professional departments cannot be carried out, only serial arrangement can be carried out, and the test efficiency is low.

Disclosure of Invention

In view of this, the invention provides a ground test system and method based on a ring bus network, which improve ground test efficiency and the repeated utilization rate of airborne bus network resources.

In order to achieve the purpose, the invention provides the following technical scheme:

a ground test system based on a ring bus network comprises:

the system comprises a controller, L switching devices, n test networks and a device source for the L switching devices to select switching; the controller is connected with L switching devices, L is the number of subsystems in the avionics system to be tested, and n is a positive integer greater than 1;

the controller is used for acquiring the test configurations set by the user for the m test networks, generating control instructions corresponding to the test configurations, and respectively issuing the control instructions to the L switching devices; wherein m is less than or equal to n;

each switching device is configured to, when receiving the control instruction issued by the controller, select and switch a device source corresponding to the test configuration for the m test networks corresponding to the test configuration based on the control instruction, where the device source selected and switched by each switching device for each test network is different.

Optionally, each of the switching devices comprises:

the network node input interface and the network node output interface which have corresponding relation are respectively used as the input end and the output end of the same equipment source, and the n channels are in one-to-one correspondence with the n test networks;

each of the channels includes: the device comprises a first test network interface, a second test network interface, a first on-off switch and a second on-off switch; the first interface of the test network is connected with a movable contact of the first on-off switch, each network node input interface is provided with a fixed contact of the first on-off switch, the second interface of the test network is connected with a movable contact of the second on-off switch, and each network node output interface is provided with a fixed contact of the second on-off switch;

correspondingly, each of the switching devices is specifically configured to: when the control instruction issued by the controller is received, m channels corresponding to m test networks corresponding to the test configuration are determined according to the control instruction, the movable contacts of the first on-off switches of the m determined channels are controlled, the fixed contacts of the first on-off switches connected with the network node input interfaces serving as the input ends of equipment sources corresponding to the test configuration are switched to, the movable contacts of the second on-off switches of the m determined channels are controlled, and the fixed contacts of the second on-off switches connected with the network node output interfaces serving as the output ends of the equipment sources corresponding to the test configuration are switched to.

Optionally, the controller is specifically configured to obtain a binding relationship between each switching device and a corresponding device source, obtain a device source selected by a user for each test network in the m test networks based on the binding relationship, obtain the test configuration according to the device source selected by the user, generate the control instruction corresponding to the test configuration, and issue the control instruction to the L switching devices respectively.

Optionally, the controller is further configured to obtain a connection state of each test network every preset time.

Optionally, the ground testing system further comprises:

the n simulation board cards are arranged in the n test networks in a one-to-one correspondence manner;

the controller is further configured to issue the control instructions to the n simulation board cards respectively;

each simulation board card is configured to, when receiving the control instruction issued by the controller, determine whether an empty source exists in the device sources selectively switched for the corresponding test network by the L switching devices according to the control instruction, acquire data on the corresponding test network if the empty source does not exist in the device sources selectively switched for the corresponding test network by the L switching devices, and simulate a genuine source of the switching device corresponding to the empty source if the empty source exists in the device sources selectively switched for the corresponding test network by the L switching devices.

Optionally, a signal enhancement device is arranged on each transmission line of the vacant source, and a branch access port is arranged on each signal enhancement device;

each switching device is further configured to, when it is determined according to the test configuration that the device source corresponding to any one of the m test networks is an idle source, the movable contact of the first on-off switch of the channel corresponding to the test network of the control equipment source is the vacant source, the movable contact is switched to the fixed contact of the first on-off switch connected with the network node input interface of the input end corresponding to the vacant source as the test configuration, the corresponding second on-off switch keeps the off state, or the movable contact of the second on-off switch of the channel corresponding to the test network with the control equipment source being the idle source is switched to the fixed contact of the second on-off switch connected to the network node output interface of the output end corresponding to the idle source as the test configuration, and the corresponding first on-off switch keeps the off state.

A ground test method based on a ring bus network is applied to a controller, the controller is arranged in a ground test system of the ring bus network, and the ground test system comprises: the system comprises a controller, L switching devices, n test networks and a device source for the L switching devices to select switching; the controller is connected with L switching devices, L is the number of subsystems in the avionics system to be tested, and n is a positive integer greater than 1; the method comprises the following steps:

acquiring test configurations set by a user for m test networks; wherein m is less than or equal to n;

generating a control instruction corresponding to the test configuration;

and respectively issuing the control instruction to the L switching devices, so that when each switching device receives the control instruction, the switching device selects and switches the device source corresponding to the test configuration for the m test networks corresponding to the test configuration based on the control instruction, wherein the source of the device selected and switched for each test network is different for each switching device.

Optionally, the ground test method further comprises:

and acquiring the connection state of each test network every preset time.

Optionally, the obtaining of the test configurations set by the user for m test networks includes:

acquiring a binding relationship between each switching device and a corresponding device source;

acquiring a device source selected by a user for each test network in m test networks based on the binding relationship;

and obtaining the test configuration according to the equipment source selected by the user.

A ground test method based on a ring bus network is applied to a switching device, the switching device is arranged in a ground test system of the ring bus network, and the ground test system comprises: the system comprises a controller, L switching devices, n test networks and a device source for the L switching devices to select switching; the switching equipment comprises at least n switching equipment sources, wherein the switching equipment sources are different, each switching equipment source comprises a genuine source and/or an idle source, each switching equipment source is different for each testing network, the controller is connected with L switching equipment, L is the number of subsystems in the avionics system to be tested, and n is a positive integer greater than 1; the ground test method comprises the following steps:

receiving a control instruction issued by the controller, wherein the control instruction is generated by the controller according to the test configuration set by the acquired user for the m test networks; wherein m is less than or equal to n;

and selecting and switching equipment sources corresponding to the test configurations for the m test networks corresponding to the test configurations based on the control instructions.

Optionally, the switching device comprises: the network node input interface and the network node output interface which have corresponding relation are respectively used as the input end and the output end of the same equipment source, and the n channels are in one-to-one correspondence with the n test networks; each of the channels includes: the device comprises a first test network interface, a second test network interface, a first on-off switch and a second on-off switch; the first interface of the test network is connected with a movable contact of the first on-off switch, each network node input interface is provided with a fixed contact of the first on-off switch, the second interface of the test network is connected with a movable contact of the second on-off switch, and each network node output interface is provided with a fixed contact of the second on-off switch;

based on the control instruction, selecting and switching the equipment source corresponding to the test configuration for the m test networks corresponding to the test configuration, including:

determining m channels corresponding to the m test networks corresponding to the test configuration according to the control instruction;

controlling the movable contacts of the first on-off switches of the m determined channels to be switched to the fixed contacts of the first on-off switches connected with the network node input interfaces of the input ends of the equipment sources corresponding to the test configurations;

and controlling the movable contacts of the second on-off switches of the m determined channels to be switched to the fixed contacts of the second on-off switches connected with the network node output interfaces of the output ends of the equipment sources corresponding to the test configurations.

A ground test method based on a ring bus network is applied to a simulation board card, the simulation board card is arranged in a ground test system of the ring bus network, and the ground test system comprises: the system comprises a controller, L switching devices, n test networks, n simulation board cards and a device source for the L switching devices to select switching; the switching equipment comprises at least n switching equipment sources, wherein the switching equipment sources are different, each switching equipment source is different from each other, the switching equipment sources comprise real part sources and/or vacant sources, each switching equipment source is different from each testing network source, the controller is connected with L switching equipment, n simulation board cards are correspondingly arranged in n testing networks one by one, L is the number of subsystems in the avionics system to be tested, and n is a positive integer greater than 1; the ground test method comprises the following steps:

judging whether an empty source exists in the equipment sources which are selected and switched by the L switching equipment for the corresponding test network according to the test configuration according to the control instruction, if not, acquiring data on the corresponding test network, and if so, simulating a genuine source of the switching equipment corresponding to the empty source.

According to the technical scheme, compared with the prior art, the ground test system and method based on the ring bus network are characterized in that the test configurations set for m test networks by a user are obtained through the controller, control instructions corresponding to the test configurations are generated and sent to the L switching devices respectively, so that each switching device can switch the device source to the device source corresponding to the test configuration according to the control instructions and is connected into the m test networks, the m parallel independent test configurations are automatically constructed, a plurality of ground integration tests can be conducted simultaneously on the basis of not changing airborne bus network resources, and the ground test efficiency and the repeated utilization rate of airborne bus network resources are effectively improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a ground testing system based on a ring bus network according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a switching device according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of another switching device according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of another ground testing system based on a ring bus network according to an embodiment of the present invention;

fig. 5 is a flowchart of a method of a ground test method based on a ring bus network applied to a controller according to an embodiment of the present invention;

fig. 6 is a flowchart of a method of a ground test method based on a ring bus network applied to a switching device according to an embodiment of the present invention;

fig. 7 is a flowchart of a method for selecting a handover method of a device source applied to a handover device according to an embodiment of the present invention;

fig. 8 is a flowchart of a method of a ground test method based on a ring bus network applied to a simulation board card according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment of the invention discloses a ground test system based on a ring bus network, which comprises:

the controller is used for acquiring the test configurations set by the user for the m test networks, generating control instructions corresponding to the test configurations and respectively issuing the control instructions to the L switching devices; wherein m is less than or equal to n;

each switching device is used for selecting and switching the device source corresponding to the test configuration for the m test networks corresponding to the test configuration based on the control instruction when receiving the control instruction issued by the controller, wherein the source of the device selected and switched by each switching device for each test network is different.

It should be noted that each of the n test networks is a ring bus network and is independent and parallel to each other.

One subsystem in the avionics system to be tested may be an onboard electronic device used in the avionics system to be tested, such as 8 onboard electronic devices, namely mission electronics, flight parameters electronics, engine electronics, inertial navigation electronics, atmospheric electronics, flight tube electronics, electromechanical electronics and weapon electronics, respectively, as 8 subsystems in the avionics system to be tested. At this time, L of the L switching devices is 8, that is, in the ground test system based on the ring bus network in the embodiment of the present invention, 8 switching devices exist, and the 8 switching devices correspond to the 8 onboard electronic devices one to one. Therefore, the source of the devices that each switching device can select to switch is also different.

Each switching device in the L switching devices can simultaneously support independent parallel tests of the n test networks, so that the source of the device selected and switched by each switching device for each test network is different. For example, the device sources that "switching device a" can select to switch are: the switching device a can simultaneously support independent parallel tests of the 3 test networks, namely the test network 1, the test network 2 and the test network 3, and at this time, once the switching device a selects and switches the device source 2 for the test network 1, the switching device a can only select one device source for the test network 2 and the test network 3 from the remaining device source 1 and the device source 3, so that the test efficiency is improved on the basis of ensuring that the ground test system based on the ring bus network supports multi-network parallel tests.

The test configuration acquired by the controller may be acquired by the controller from a device source selected by the controller for each of the m test networks based on the acquired binding relationship between each switching device and the corresponding device source by the user, where the binding relationship is acquired by the controller in advance. In other words, the controller obtains the binding relationship between each switching device and the corresponding device source, obtains the device source selected by the user for each test network in the m test networks based on the binding relationship, obtains the test configuration according to the device source selected by the user, so as to generate the control instruction corresponding to the test configuration, and sends the control instruction to the L switching devices respectively.

Thus, the test configuration is used to describe the specific equipment sources that each switching device needs to select for each of the m test networks to be tested. For example, the test configuration set by the controller for 2 test networks includes description information: "test network 1, switching device 1-device source a, switching device 2-device source B, switching device 3-device source C, switching device 4-device source D", and "test network 2, switching device 1-device source a, switching device 2-device source B, switching device 3-device source C, switching device 4-device source D".

The switching equipment selects specific equipment sources to be switched for each test network according to the test configuration, and the equipment sources can be all true sources, can also be all vacant sources, can also be part true sources, and can be part vacant sources. The genuine source corresponding to each switching device can be a real genuine source from a channel such as a supplier, a technical department, a manufacturer and the like, or a simulated genuine source simulated by a genuine simulator. The real part source is the airborne electronic equipment which really exists in the avionics system.

The test configuration obtained by the controller can be displayed through a control panel on the controller, so that manual operation of a user is facilitated, and the ground test to be carried out can be replaced in real time by selecting different test configurations.

In order that the present invention may be more clearly understood by those skilled in the art, it will now be explained in detail with reference to fig. 1:

the embodiment corresponding to fig. 1 discloses a ground testing system based on a ring bus network, which includes:

the system comprises a controller 101, 8 switching devices and 4 test networks; the 8 switching devices are different switching devices, and correspond to the switching device 1, the switching device 2, the switching device 3, the switching device 4, the switching device 5, the switching device 6, the switching device 7, and the switching device 8 in the figure, so that the source of the device for each switching device 102 to select switching is different in the 8 switching devices, and the source of the device for each switching device 102 to select switching is at least 4, the source of the device includes a genuine source and/or an idle source, and the controller 101 is connected to the 8 switching devices respectively.

The controller 101 is configured to obtain test configurations set by a user for 4 test networks, generate control instructions corresponding to the test configurations, and issue the control instructions to the 8 switching devices respectively;

each switching device 102 is configured to select, based on a control instruction, a device source corresponding to the test configuration for switching the 4 test networks corresponding to the test configuration when receiving the control instruction issued by the controller, where the device source selected and switched by each switching device for each test network is different.

It should be noted that the device source for each switching device 102 to select switching corresponds to one onboard electronic device and has the functions related to the onboard electronic device, for example, in an avionics system, 8 onboard electronic devices corresponding to the device sources for switching by 8 switching devices may be: mission electronics, flight parameter electronics, engine electronics, inertial navigation electronics, atmospheric electronics, flight tube electronics, electromechanical electronics, and weapon electronics. Therefore, the 8 switching devices are specifically: the system comprises a task switching device, a flight parameter switching device, an engine switching device, an inertial navigation switching device, an atmosphere switching device, a flight tube switching device, an electromechanical switching device and a weapon switching device.

The relative positions of the task switching equipment, the flight parameter switching equipment, the engine switching equipment, the inertial navigation switching equipment, the atmospheric switching equipment, the flight control switching equipment, the electromechanical switching equipment and the weapon switching equipment in 4 test networks correspond to the positions of corresponding airborne electronic equipment in a real avionics system, and a corresponding equipment source is configured at each switching equipment, so that 4 test networks, 8 switching equipment and the equipment sources configured for each switching equipment jointly form an annular switching network capable of realizing the joint test of the 4 test networks.

Secondly, when the 8 switching devices are specifically: when the task switching equipment, the flight parameter switching equipment, the engine switching equipment, the inertial navigation switching equipment, the atmosphere switching equipment, the flight tube switching equipment, the electromechanical switching equipment and the weapon switching equipment are used, the equipment sources for each switching equipment to select to switch are different. For example, the device sources that the task switching device can select to switch are "task a", "task B", "task C", and "task D"; the device sources which can be selected and switched by the flying parameter switching device are flying parameter A, flying parameter B, flying parameter C, flying parameter D and the like.

In the embodiment of the invention, the controller 101 sends the control instruction corresponding to the test configuration to the 8 switching devices, so that each switching device 102 can select and switch the device source corresponding to the test configuration for the 4 test networks according to the control instruction and access the 4 test networks, thereby automatically constructing the 4 parallel independent test configurations and effectively improving the test efficiency.

The invention discloses a ground test system based on a ring bus network, which is characterized in that a controller is used for acquiring test configurations set by a user for m test networks, generating control instructions corresponding to the test configurations, and respectively issuing the control instructions to L switching devices, so that each switching device switches and selects a device source corresponding to the test configuration according to the control instructions and accesses the device source into the m test networks, thereby automatically constructing m parallel independent test configurations, facilitating simultaneous multiple ground integration tests on the basis of not changing airborne bus network resources, and effectively improving the ground test efficiency and the repeated utilization rate of the airborne bus network resources.

Optionally, the controller in the above embodiment is further configured to obtain the connection state of each test network every preset time.

It should be noted that the preset time period may be a preset time interval value for acquiring the connection state at a preset timing, such as 1 minute, 30 minutes, and the like.

The connection state of each test network includes: each switching device selects the source of the switched device for the test network, and whether the connection between the switching device and the corresponding device source is normal or not. The mode of acquiring the connection state of each test network by the controller can be active acquisition or passive acquisition, for example, each switching device can send the connection state to the controller every preset time, and then the controller can acquire the connection state of each test network according to the connection state of each switching device; for another example, the controller may send instructions to each switching device every preset time period, and after receiving the corresponding instruction, each switching device reports its connection state to the controller, and then the controller learns the connection state of each test network according to the connection state of each switching device.

In addition, in practical application, the controller can also display the acquired connection state of each test network, so that a user can monitor the running state of each test network in real time, and the problem that the problem cannot be solved in time due to fault is avoided.

In the embodiment of the invention, the connection state of each test network is acquired by the controller at regular time, so that the current connection state of each test network can be acquired by a worker in time, and the problem troubleshooting is facilitated.

Optionally, each switching device in the above embodiments specifically includes:

each channel includes: the device comprises a first test network interface, a second test network interface, a first on-off switch and a second on-off switch; the first interface of the test network is connected with a movable contact of a first on-off switch, each network node input interface is provided with a fixed contact of the first on-off switch, the second interface of the test network is connected with a movable contact of a second on-off switch, and each network node output interface is provided with a fixed contact of the second on-off switch;

correspondingly, each switching device is specifically configured to: when a control instruction issued by a controller is received, m channels corresponding to m test networks corresponding to the test configuration are determined according to the control instruction, a movable contact of a first on-off switch of the determined m channels is controlled, the movable contact of the first on-off switch is switched to a fixed contact of the first on-off switch connected with a network node input interface of an input end of a device source corresponding to the test configuration, a movable contact of a second on-off switch of the determined m channels is controlled, and the movable contact of the second on-off switch is switched to a fixed contact of the second on-off switch connected with a network node output interface of an output end of the device source corresponding to the test configuration.

In order that those skilled in the art will more clearly understand the present invention, reference will now be made in detail to FIG. 2:

the embodiment corresponding to fig. 2 discloses a switching device, including:

4 channels, 4 network node input interfaces, and 4 network node output interfaces; as shown in fig. 2, the 4 channels are: channel 1, channel 2, channel 3, channel 4; the 4 network node input interfaces are respectively: an input interface 1, an input interface 2, an input interface 3 and an input interface 4; the output interfaces of the 4 network nodes are respectively as follows: output interface 1, output interface 2, output interface 3, output interface 4.

Wherein, one network node input interface corresponds to one network node output interface, for example, the input interface 1 corresponds to the output interface 1; if the input interface 1 and the output interface 1 having the corresponding relationship are respectively used as the input end and the output end of the device source 1, so as to access the device source 1.

Each channel includes: the device comprises a first interface of a test network, a second interface of the test network, a first on-off switch and a second on-off switch. As shown in fig. 2, the first interfaces of the test network are: interface 1, interface 2, interface 3, interface 4; the second interface of the test network is respectively as follows: interface 5, interface 6, interface 7, interface 8; the first on-off switch is respectively: k1, K2, K3, K4; the second on-off switch is respectively: k5, K6, K7 and K8.

The first interface of the test network is connected with a movable contact of a first on-off switch, and each network node input interface is provided with a fixed contact of the first on-off switch; taking channel 1 as an example, interface 1 in channel 1 is connected with the movable contact of first on-off switch K1, and the fixed contact of first on-off switch K1 is arranged on 4 network node input interfaces of input interface 1, input interface 2, input interface 3, and input interface 4, that is, there are 4 network node input interfaces for the movable contact of first on-off switch K1 to selectively connect, so that first on-off switch K1 can be accessed at any selected one of the input ends of 4 device sources.

The second interface of the test network is connected with the movable contact of the second on-off switch, and each network node output interface is provided with a fixed contact of the second on-off switch; still taking channel 1 as an example, interface 5 in channel 1 is connected to the movable contact of second on-off switch K5, and the fixed contact of second on-off switch K5 is disposed on 4 network node output interfaces of output interface 1, output interface 2, output interface 3, and output interface 4, that is, there are 4 network node output interfaces for the movable contact of second on-off switch K5 to selectively connect, so that second on-off switch K5 can be accessed at any selected one of the output terminals of 4 device sources.

It should be noted that, when the movable contact of the first on-off switch is connected to the fixed contact of the first on-off switch connected to the network node input interface of the input terminal of a certain device source, the movable contact of the second on-off switch belonging to the same channel as the first on-off switch is connected to the fixed contact of the second on-off switch connected to the network node output interface of the output terminal of the same device source. Still taking channel 1 as an example, the movable contact of the first on-off switch K1 in channel 1 is connected to the fixed contact of the first on-off switch K1 connected to the input interface 3 as the input end of the device source 3, and simultaneously, the movable contact of the second on-off switch K5 connected to the output interface 3 as the output end of the device source 3 is connected to the movable contact of the first on-off switch K1 and the second on-off switch K5 belonging to channel 1, so that the device source 3 is connected to channel 1, that is, the switching device selects the switching device source 3 for the test network corresponding to channel 1 to perform the test.

With reference to fig. 2, a process of selecting and switching a device source corresponding to a test configuration for m test networks corresponding to the test configuration based on a control instruction when a switching device receives the control instruction issued by the controller is specifically described below:

the switching device shown in fig. 2 is "switching device a", and the test configuration discloses that the switching device a needs to be a specific device source selected for each of 2 test networks to be tested, specifically, "test network 1, switching device a-device source 1, test network 2, and switching device a-device source 3", when receiving a control instruction issued by a controller, the switching device a determines 2 channels corresponding to the 2 test networks corresponding to the test configuration according to the control instruction, that is, channel 1 corresponding to test network 1, channel 2 corresponding to test network 2, and further controls the movable contact of the first on-off switch of the determined 2 channels to switch to the fixed contact of the first on-off switch connected to the network node input interface as the input end of the device source corresponding to the test configuration, that is, the movable contact of K1 of control channel 1 switches to the fixed contact of K1 connected to input interface 1, the movable contact of K2 of control channel 2 switches to the fixed contact of K2 to which input interface 3 is connected; meanwhile, the switching device a controls the movable contact of the second on-off switch of the determined 2 channels to switch to the fixed contact of the second on-off switch connected to the network node output interface of the output end corresponding to the device source as the test configuration, that is, the movable contact of K5 of the control channel 1 switches to the fixed contact of K5 connected to the output interface 1, and the movable contact of K6 of the control channel 2 switches to the fixed contact of K6 connected to the output interface 3, so that the device source 1 is selected to access the test network 1, and the device source 3 is selected to access the test network 2 by switching the device a, thereby realizing the parallel test of the two networks.

In the switching equipment disclosed by the embodiment of the invention, n channels with the same number as that of the test networks are arranged, so that when a control instruction is received, a plurality of channels of the switching equipment accessed to the test networks corresponding to the test configuration can be determined according to the control instruction, and then the movable contact of the first on-off switch and the movable contact of the second on-off switch of each channel are controlled to be respectively switched to the fixed contact of the first on-off switch connected with the input interface of the network node of the input end of the equipment source corresponding to the test configuration and the fixed contact of the second on-off switch connected with the output interface of the network node of the output end, so that different equipment sources of the switching equipment are accessed to the corresponding test networks through the plurality of channels determined in the switching equipment, and then the parallel tests of the plurality of test networks are realized, and on the basis of effectively reducing the number of cable connections in the switching equipment, the ground test efficiency and the repeated utilization rate of airborne bus network resources are improved.

Optionally, on the basis of the foregoing embodiment, an embodiment of the present invention discloses another switching device, including:

a signal enhancement device is arranged on each transmission line of the vacant source, and a branch access port is arranged on each signal enhancement device;

correspondingly, each switching device is further configured to, when it is determined according to the test configuration that the device source corresponding to any one of the m test networks is an idle source, control the movable contact of the first on-off switch of the channel corresponding to the test network whose device source is the idle source to switch to the fixed contact of the first on-off switch connected to the network node input interface of the input terminal corresponding to the idle source as the test configuration, and the corresponding second on-off switch maintains the off state, or control the movable contact of the second on-off switch of the channel corresponding to the test network whose device source is the idle source to switch to the fixed contact of the second on-off switch connected to the network node output interface of the output terminal corresponding to the test configuration as the test configuration, and the corresponding first on-off switch maintains the off state.

In addition, when it is determined according to the test configuration that the device source corresponding to any one of the m test networks is a genuine source, each switching device is specifically configured to: the movable contact of the first on-off switch of the channel corresponding to the test network with the control equipment source being the true source is switched to the fixed contact of the first on-off switch connected to the network node input interface of the input end corresponding to the true source as the test configuration, and the movable contact of the second on-off switch of the channel corresponding to the test network with the control equipment source being the true source is switched to the fixed contact of the second on-off switch connected to the network node output interface of the output end corresponding to the true source as the test configuration.

It should be noted that the number of signal enhancement devices is equal to the number of idle sources existing in the switching device.

The corresponding second on-off switch means: and the first on-off switch of the channel corresponding to the test network with the switching equipment control equipment source being the vacant source belongs to the second channel switch of the same channel. The way in which the respective second on/off switch remains off means: the movable contact of the second on-off switch of the channel corresponding to the test network with the equipment source being the vacant source does not act, namely is not connected with the fixed contact of the second on-off switch connected with the network node output interface of the output end corresponding to the vacant source as the test configuration. At this time, the branch access port arranged on the signal enhancement device is used for connecting a branch outside the switching equipment to participate in the test.

The corresponding first on-off switch means: and the second on-off switch of the channel corresponding to the test network with the switching equipment control equipment source being the vacant source belongs to the first channel switch of the same channel. The manner in which the respective first on-off switch maintains the off state means that: the movable contact of the first on-off switch of the channel corresponding to the test network with the equipment source being the vacant source does not act, namely is not connected with the fixed contact of the first on-off switch connected with the network node input interface of the input end of the vacant source corresponding to the test configuration. At this time, the branch access port arranged on the signal enhancement device is used for connecting a branch outside the switching equipment to participate in the test.

In order to make the present invention more clear to those skilled in the art, the embodiment of fig. 2 is explained in detail with reference to fig. 3:

the switching device disclosed in the embodiment corresponding to fig. 3 includes:

the device comprises 4 channels, 5 network node input interfaces and 5 network node output interfaces, wherein 1 network node input interface and 1 network node output interface which have corresponding relation are arranged at two ends of 1 signal enhancement device arranged on an idle source transmission line;

when the switching equipment determines that the equipment source required to be switched is the vacant source for the test network corresponding to the channel 1 according to the test configuration, the movable contact of the first on-off switch K1 of the channel 1 is controlled to be switched to the fixed contact of the first on-off switch K1 connected to the left end of the network node input interface-signal enhancement device 1 as the input end of the test configuration corresponding to the vacant source, and meanwhile, the movable contact of the second on-off switch K5 is in an off state. At this time, the branch access port 1 and the branch access port 2 provided in the signal enhancement device 1 are used to connect two branches outside the switching device and participate in the test.

Or, when the switching device determines that the device source which needs to be switched for the test network corresponding to the channel 1 is the idle source according to the test configuration, the switching device controls the movable contact of the second on-off switch K5 of the channel 1 to switch to the fixed contact of the second on-off switch K5 connected to the right end of the network node input interface-signal enhancement device 1 as the input end of the test configuration corresponding to the idle source, and simultaneously, the movable contact of the first on-off switch K1 is in an off state. At this time, the branch access port 1 and the branch access port 2 provided in the signal enhancement device 1 are used to connect two branches outside the switching device and participate in the test.

It should be noted that only one signal enhancement device is disposed inside the switching device shown in fig. 3, which proves that only 1 device source of 5 device sources inside the switching device is an idle source.

In the embodiment of the invention, by arranging the signal enhancement devices with the number equal to that of the device sources which are vacant sources in each switching device, after the movable contact of the first on-off switch of the channel corresponding to the test network with the switching device control device sources which are vacant sources is switched to the fixed contact of the first on-off switch connected with the network node input interface of the input end corresponding to the vacant sources as a test configuration, the movable contact of the second on-off switch which belongs to the same channel with the first on-off switch is connected with the branch access port of the signal enhancement device arranged on the transmission line of the vacant sources; or, the movable contact of the second on-off switch of the channel corresponding to the test network with the switching equipment control equipment source being the idle source is switched to the fixed contact of the second on-off switch connected to the network node output interface of the output end corresponding to the idle source as the test configuration, so that the movable contact of the first on-off switch belonging to the same channel as the second on-off switch is connected with the branch access port of the signal enhancement device arranged on the transmission line of the idle source, and the aim of accessing the idle source existing in the switching equipment to the test network is fulfilled on the basis of ensuring normal transmission of test network data.

According to the switching equipment disclosed by the embodiment of the invention, the signal enhancement devices with the number equal to that of the equipment sources which are vacant sources are arranged in each switching equipment, so that when the equipment sources corresponding to a test network are vacant sources, the movable contact of the on-off switch at one side of the channel corresponding to the test network can be normally and selectively switched, the on-off switch at the other side is connected with the branch access port of the signal enhancement device to keep the off state, and further, the diversity of test combinations is increased on the basis of ensuring the test reliability.

Optionally, on the basis of the foregoing embodiment, an embodiment of the present invention discloses another ground testing system based on a ring bus network, including:

the system comprises a controller, L switching devices, n test networks, a device source for the L switching devices to select switching, and n simulation board cards, wherein the n simulation board cards are arranged in the n test networks in a one-to-one correspondence manner;

the controller is also used for respectively issuing the control instructions to the n simulation board cards;

each simulation board card is used for judging whether an empty source exists in the equipment sources selected and switched for the corresponding test network by the L switching equipment according to the control instruction when receiving the control instruction issued by the controller, acquiring data on the corresponding test network if the empty source does not exist in the equipment sources selected and switched for the corresponding test network by the L switching equipment, and if the empty source exists in the equipment sources selected and switched for the corresponding test network by the L switching equipment, simulating the real source of the switching equipment corresponding to the empty source.

It should be noted that n simulation board cards may be arranged in the n test networks in a one-to-one correspondence manner, and specifically, each simulation board card may be arranged on a transmission line of the test network between any two switching devices. The simulation board cards arranged in each corresponding test network can judge whether vacant sources exist in the equipment sources selected and switched by each switching device for the test network where the simulation board card is located, and once the vacant sources do not exist, the simulation board cards only provide a data acquisition function; once the switching equipment exists, the simulation board card is the true source of the switching equipment, the source of the test network simulation equipment where the simulation board card is located is the vacant source, so that the original true source of the switching equipment is replaced by the true source simulated by the simulation board card, and the problem that the true source of the switching equipment is inconvenient to participate in the ground test is solved.

In order to make the present invention more clear to those skilled in the art, the embodiment shown in fig. 1 is explained in detail with reference to fig. 4:

the embodiment corresponding to fig. 4 discloses a ground testing system based on a ring bus network, which includes:

the system comprises a controller 101, 8 switching devices, 4 test networks and 4 simulation board cards, wherein the 4 simulation board cards are arranged in the 4 test networks in a one-to-one correspondence manner; the controller 101 is connected to 8 switching devices and 4 simulation board cards respectively, and the 4 simulation board cards are arranged between the switching devices 3 and the switching devices 6.

The controller 101 acquires test configurations set by a user for 4 test networks, generates control instructions corresponding to the test configurations, and sends the control instructions to 8 switching devices and 4 simulation board cards respectively;

each switching device, when receiving a control instruction issued by the controller 101, selects and switches a device source corresponding to the test configuration for the 4 test networks corresponding to the test configuration based on the control instruction; the switching equipment 4 and the switching equipment 8 select the switching equipment sources for 4 test networks corresponding to the test configuration to be vacant sources;

when each simulation board card receives a control instruction issued by the controller 101, it is determined whether an empty source exists in the device sources selected and switched for the corresponding 4 test networks by the 8 switching devices according to the control instruction, and when it is determined that no empty source exists in the device sources selected and switched for the corresponding 4 test networks by the switching device 1, the switching device 2, the switching device 3, the switching device 5, the switching device 6, and the switching device 7, and an empty source exists in the device sources selected and switched for the corresponding 4 test networks by the switching device 4 and the switching device 8, the 4 simulation board cards arranged in the 4 test networks are the true source of the corresponding test network simulation switching device 4 and the switching device 8, respectively, and then the simulated true source is accessed into the corresponding test network to participate in the ground test.

In the embodiment of the present invention, each simulation board 103 respectively determines whether an empty source exists in the device sources that are selected and switched by the test network where the simulation board is located for the 8 switching devices through the control instruction issued by the controller 101, and if so, the simulation device source is a real source of the switching device with the empty source, which solves the problem that the ground test cannot be smoothly performed due to the fact that the real source of the switching device cannot perform the ground test.

The invention discloses a ground test system based on a ring bus network, which is characterized in that n simulation board cards which correspond one to one are respectively arranged for n test networks which run independently in parallel, when each switching device selects and switches a device source for the test network where the simulation board card is positioned, the corresponding simulation board card can timely simulate a real source of the switching device of which the device source is the vacant source, and then the simulated real source is accessed into the corresponding test network to replace the real source of the switching device which is inconvenient to participate in the ground test, thereby improving the test reliability of the ground test.

The embodiment of the invention discloses a ground test method based on a ring bus network, which is applied to a controller, wherein the controller is arranged in a ground test system of the ring bus network, and the ground test system comprises: the system comprises a controller, L switching devices, n test networks and a device source for the L switching devices to select switching; the controller is connected with L switching devices, L is the number of subsystems in the avionics system to be tested, and n is a positive integer greater than 1; referring to fig. 5, the method specifically includes the following steps:

s201: acquiring test configurations set for m test networks by a user; wherein m is less than or equal to n.

S202: and generating a control command corresponding to the test configuration.

S203: and respectively issuing the control instruction to the L switching devices, so that when each switching device receives the control instruction, the switching device selects and switches the device source corresponding to the test configuration for the m test networks corresponding to the test configuration based on the control instruction, wherein the device source selected and switched by each switching device for each test network is different.

The embodiment of the invention discloses a ground test method based on a ring bus network, which is applied to a controller, wherein the controller generates a control instruction corresponding to the test configuration by acquiring the test configuration set by a user for m test networks and sends the control instruction to L switching devices, so that each switching device switches and selects the device source to the device source corresponding to the test configuration according to the control instruction and accesses the device source to the m test networks, thereby automatically constructing m parallel independent test configurations, facilitating simultaneous multiple ground integration tests on the basis of not changing airborne bus network resources, and effectively improving the ground test efficiency and the repeated utilization rate of airborne bus network resources.

For the specific working process provided by the embodiment of the present invention, please refer to the corresponding working process in the ground testing system, which is not described herein again.

Optionally, after the controller in the embodiment corresponding to fig. 5 issues the control instruction to the L switching devices, the method further includes:

and acquiring the connection state of each test network every preset time.

In the embodiment of the invention, the controller acquires the connection state of each test network at regular time, so that the current connection state of each test network can be acquired by a worker in time, and the problem troubleshooting is facilitated.

The embodiment of the invention discloses a ground test method based on a ring bus network, which is applied to switching equipment, wherein the switching equipment is arranged in a ground test system of the ring bus network, and the ground test system comprises: the system comprises a controller, L switching devices, n test networks and a device source for the L switching devices to select switching; the switching equipment comprises at least n switching equipment sources, wherein the switching equipment sources are different, each switching equipment source comprises a genuine source and/or an empty source, each switching equipment source is different for each test network, the controller is connected with L switching equipment, L is the number of subsystems in the avionics system to be tested, and n is a positive integer greater than 1; referring to fig. 6, the method specifically includes the following steps:

s301: receiving a control instruction issued by a controller, wherein the control instruction is generated by the controller according to the test configuration set by the acquired user for the m test networks; wherein m is less than or equal to n;

s302: and based on the control instruction, selecting and switching equipment sources corresponding to the test configurations for the m test networks corresponding to the test configurations.

The embodiment of the invention discloses a ground test method based on a ring bus network, which is applied to a switching device, wherein the switching device selects and switches a device source corresponding to a test configuration for m test networks corresponding to the test configuration based on a control instruction which is sent by a receiving controller and is generated by the controller according to the test configuration set by a user, and the device source is accessed into the m test networks, so that m parallel independent test configurations are automatically constructed, a plurality of ground integrated tests are simultaneously carried out on the basis of not changing airborne bus network resources, and the ground test efficiency and the repeated utilization rate of airborne bus network resources are effectively improved.

For the above embodiment of fig. 6, S302: the embodiment of the invention discloses a method for selecting and switching equipment sources, which is applied to switching equipment and comprises the following steps of selecting and switching the equipment sources corresponding to test configurations for m test networks corresponding to the test configurations based on control instructions, wherein the equipment sources corresponding to the test configurations comprise: the network node input interface and the network node output interface which have corresponding relation are respectively used as the input end and the output end of the same equipment source, and the n channels are in one-to-one correspondence with the n test networks; each channel includes: the device comprises a first test network interface, a second test network interface, a first on-off switch and a second on-off switch; the first interface of the test network is connected with a movable contact of a first on-off switch, each network node input interface is provided with a fixed contact of the first on-off switch, the second interface of the test network is connected with a movable contact of a second on-off switch, and each network node output interface is provided with a fixed contact of the second on-off switch; referring to fig. 7, the method specifically includes the following steps:

s401: and determining m channels corresponding to the m test networks corresponding to the test configuration according to the control instruction.

S402: and controlling the movable contact of the first on-off switch of the determined m channels to switch to the fixed contact of the first on-off switch connected with the network node input interface of the input end of the corresponding equipment source as the test configuration.

S403: and controlling the movable contact of the second on-off switch of the determined m channels to switch to the fixed contact of the second on-off switch connected with the network node output interface of the output end of the corresponding equipment source as the test configuration.

In the embodiment of the invention, the switching equipment is provided with n channels with the same number as that of the test networks, so that when a control instruction is received, a plurality of channels of the switching equipment can be accessed to the test networks corresponding to the test configuration according to the control instruction, and then the movable contact of the first on-off switch and the movable contact of the second on-off switch of each channel are controlled to be respectively switched to the fixed contact of the first on-off switch connected with the input end network node input interface of the equipment source corresponding to the test configuration and the fixed contact of the second on-off switch connected with the network node output interface of the output end, so that different equipment sources of the switching equipment are accessed to the corresponding test networks through the plurality of channels determined in the switching equipment, and then the parallel tests of the plurality of test networks are realized, on the basis of effectively reducing the number of cable connection times in the switching equipment, the ground test efficiency and the repeated utilization rate of airborne bus network resources are improved.

The embodiment of the invention discloses a ground test method based on a ring bus network, which is applied to a simulation board card, wherein the simulation board card is arranged in a ground test system of the ring bus network, and the ground test system comprises: the system comprises a controller, L switching devices, n test networks, n simulation board cards and a device source for the L switching devices to select switching; the switching equipment comprises at least n switching equipment sources, wherein the switching equipment sources are different, each switching equipment source is different from each other, the switching equipment sources comprise real part sources and/or vacant sources, each switching equipment source is different from each testing network source, the controller is connected with L switching equipment, n simulation board cards are correspondingly arranged in n testing networks one by one, L is the number of subsystems in the avionics system to be tested, and n is a positive integer greater than 1; referring to fig. 8, the method specifically includes the following steps:

s501: receiving a control instruction issued by a controller, wherein the control instruction is generated by the controller according to the test configuration set by the acquired user for the m test networks; wherein m is less than or equal to n.

S502: and judging whether vacant sources exist in the equipment sources selected and switched for the corresponding test network by the L switching equipment according to the test configuration according to the control instruction, if so, executing S503, and if not, executing S504.

S503: the simulation vacant source corresponds to a real source of the switching equipment.

S504: data on the corresponding test network is collected.

The ground test method based on the ring bus network disclosed by the embodiment of the invention is applied to the simulation board cards, n simulation board cards which correspond to one another are respectively arranged for n parallel and independently operated test networks, when each switching device selects and switches the device source of the test network where the simulation board card is located to have an empty source, the corresponding simulation board card can timely simulate the real source of the switching device of which the device source is the empty source, and then the simulated real source is accessed into the corresponding test network to replace the real source of the switching device which is inconvenient to participate in the ground test, so that the test reliability of the ground test is improved.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A ground test system based on a ring bus network, comprising:

2. The ground testing system of claim 1, wherein each of the switching devices comprises:

3. The ground testing system of claim 1, wherein the controller is further configured to obtain the connection status of each of the testing networks at intervals of a predetermined duration.

4. The ground testing system of claim 1, further comprising:

5. The ground testing system of claim 2, wherein each transmission line of the vacant source is provided with a signal enhancement device, and each signal enhancement device is provided with a branch access port;

6. A ground test method based on a ring bus network is characterized in that the ground test method is applied to a controller, the controller is arranged in a ground test system of the ring bus network, and the ground test system comprises: the system comprises a controller, L switching devices, n test networks and a device source for the L switching devices to select switching; the controller is connected with L switching devices, L is the number of subsystems in the avionics system to be tested, and n is a positive integer greater than 1; the method comprises the following steps:

generating a control instruction corresponding to the test configuration;

7. The ground testing method of claim 6, further comprising:

and acquiring the connection state of each test network every preset time.

8. A ground test method based on a ring bus network is characterized in that the ground test method is applied to switching equipment, the switching equipment is arranged in a ground test system of the ring bus network, and the ground test system comprises: the system comprises a controller, L switching devices, n test networks and a device source for the L switching devices to select switching; the switching equipment comprises at least n switching equipment sources, wherein the switching equipment sources are different, each switching equipment source comprises a genuine source and/or an idle source, each switching equipment source is different for each testing network, the controller is connected with L switching equipment, L is the number of subsystems in the avionics system to be tested, and n is a positive integer greater than 1; the method comprises the following steps:

9. The ground testing method of claim 8, wherein the switching device comprises: the network node input interface and the network node output interface which have corresponding relation are respectively used as the input end and the output end of the same equipment source, and the n channels are in one-to-one correspondence with the n test networks; each of the channels includes: the device comprises a first test network interface, a second test network interface, a first on-off switch and a second on-off switch; the first interface of the test network is connected with a movable contact of the first on-off switch, each network node input interface is provided with a fixed contact of the first on-off switch, the second interface of the test network is connected with a movable contact of the second on-off switch, and each network node output interface is provided with a fixed contact of the second on-off switch;

10. A ground test method based on a ring bus network is characterized in that the ground test method is applied to a simulation board card, the simulation board card is arranged in a ground test system of the ring bus network, and the ground test system comprises the following steps: the system comprises a controller, L switching devices, n test networks, n simulation board cards and a device source for the L switching devices to select switching; the switching equipment comprises at least n switching equipment sources, wherein the switching equipment sources are different, each switching equipment source is different from each other, the switching equipment sources comprise real part sources and/or vacant sources, each switching equipment source is different from each testing network source, the controller is connected with L switching equipment, n simulation board cards are correspondingly arranged in n testing networks one by one, L is the number of subsystems in the avionics system to be tested, and n is a positive integer greater than 1; the ground test method comprises the following steps:

judging whether an idle source exists in the equipment sources selected and switched for the corresponding test network by the L pieces of switching equipment according to the test configuration according to the control instruction;

if the vacant source does not exist in the equipment sources selected and switched by the L switching equipment for the corresponding test network, acquiring data on the corresponding test network;

if the vacant source exists in the equipment sources selected and switched by the L switching equipment for the corresponding test network, simulating a real source of the switching equipment corresponding to the vacant source.