A test method and device for airborne intelligent display

Abstract

The invention discloses a test method and device for an airborne intelligent display, wherein the method comprises the following steps: sorting data packets and loading them into a buffer for data transmission; selecting data packets in sequence; judging whether the data packets need to be sent to an LCD component; if not, returning to execute step S5; if yes, sending the data packets to the LCD component; judging whether it is necessary to wait for a response from the LCD component; if yes, reading the response data of the LCD component; judging whether the data packets in the buffer are sent completely; the invention can automatically identify the client ARP data packet request and record network data information, and automatically establish various servers required by the client, convert and process the binary data according to the collected network data, and then repackage it, and then transmit the stored network data packets completely for restoration, thereby realizing automatic communication with the client, and completing the test of the LCD component in this way.

Description

Technical Field

[0001] The present invention relates to the technical field of airborne display testing, and in particular to a testing method and equipment for an airborne intelligent display. Background Art

[0002] LCD components, the full name of which is SMART MONITOR, are usually called LCDs by airlines. LCD components are installed on the backrests of aircraft seats to provide passengers with entertainment services during the journey. The RD-FW series LCDs are suitable for A330, B747 and other aircraft models. OEMs strictly control the testing technology of RD-FW series LCD components, and the whole machine testing technology is blocked to the outside world. The maintenance cost is very high and the maintenance cycle is very long. RD-FW series LCD components are consumables, and the annual disassembly volume is very large. This equipment can be used to complete the testing and maintenance of LCD components. The main communication method of LCD components is Ethernet data communication, and the Ethernet data communication protocol is mainly used in the development of LCD test equipment.

[0003] In civil aviation entertainment systems, Ethernet data communication protocols are often used. Currently, the most commonly used Ethernet data transmission layer communication protocols are based on TCP transmission protocol and UDP transmission protocol. The existing Ethernet data restoration method can only restore the connectionless UDP data packet protocol, or mechanically send TCP data, and cannot truly carry out effective data transmission with the client or server. It is impossible to effectively send data for connection-based TCP transmission protocol data and UDP protocol data with interactive information feedback. Although the data sent is the same, there will be no normal data feedback response for the actual data communication end. It simply sends the collected data to a fixed IP address, and is unable to perform any detection on the returned data or make correct data interaction.

[0004] To sum up, the data restoration method of the reliable TCP transmission protocol connection with connection and the data restoration method of the UDP transmission protocol with data interaction cannot be effectively completed at present. They can only mechanically complete data forwarding without the meaning of actual data communication. There is no good solution to this technical problem in the existing technology. Summary of the invention

[0005] The purpose of the present invention is to provide a test method and device for an airborne intelligent display, which can automatically identify the client's ARP data packet request and record network data information, and automatically establish various servers required by the client, convert and process the binary data according to the collected network data, and then repackage it, and then transmit the stored network data packet intact for restoration, thereby realizing automatic communication with the client, and completing the test of LCD components in this way.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A method for testing an airborne intelligent display is provided, comprising the following steps:

[0008] S1: Collect normal communication data between LCD components and onboard servers;

[0009] S2: storing the normal communication data as original data;

[0010] S3: Process and package the original data to obtain a data packet;

[0011] S4: sort the data packets and load them into the buffer for data transmission;

[0012] S5: Select data packets in order;

[0013] S6: Determine whether the data packet needs to be sent to the LCD component;

[0014] S7: If not, return to step S5;

[0015] S8: If yes, the data packet is sent to the LCD component;

[0016] S9: Determine whether the data packet is sent successfully;

[0017] S10: If not, return to step S8; S11: determine whether it is necessary to wait for the LCD component to respond;

[0018] S12: If yes, read the response data of the LCD component;

[0019] S13: Determine whether the buffer data packet has been sent;

[0020] S14: If not, return to step S5;

[0021] S15: If yes, the test is completed and the connection is disconnected.

[0022] As a preferred solution of the test method of the airborne intelligent display, after the step S12 of reading the response data of the LCD component if yes, the method further includes:

[0023] S121: Determine whether the response data has been read;

[0024] S122: If not, return to step S12. As a preferred solution of the test method of the airborne intelligent display, after the step S3 of processing and packaging the raw data to obtain the data packet, it also includes:

[0025] S31: judging whether it is necessary to create a TCP transport protocol server according to the data packet;

[0026] S32: If yes, create a TCP transport protocol server.

[0027] As a preferred solution of the test method of the airborne intelligent display, after the step S3 of processing and packaging the raw data to obtain the data packet, the method further includes:

[0028] S33: judging whether it is necessary to create a UDP transport protocol server according to the data packet;

[0029] S34: If yes, create a UDP transport protocol server.

[0030] As a preferred solution of the test method of the airborne intelligent display, before the step S1 of collecting the normal communication data of the LCD component and the airborne server, it also includes:

[0031] S101: Collect and analyze the ARP request sent by the LCD component;

[0032] S102: Building a DHCP server according to the ARP request data packet.

[0033] The present invention also provides a test device for an airborne intelligent display, comprising:

[0034] Data acquisition unit, used to collect normal communication data between LCD components and onboard servers;

[0035] A storage unit, used for storing the normal communication data as original data;

[0036] A data processing unit, used for processing and packaging the original data to obtain a data packet;

[0037] A sorting unit, used to sort the data packets and load them into a buffer for data transmission;

[0038] A selection unit, used for selecting data packets in sequence;

[0039] A first judging unit, used for judging whether the data packet needs to be sent to the LCD component;

[0040] The first loop unit is used for returning to the step of "selecting data packets in sequence" if the first determination unit determines that the data packet does not need to be sent to the LCD component;

[0041] A sending unit, configured to send the data packet to the LCD component if the first judging unit judges that the data packet needs to be sent to the LCD component;

[0042] A fifth determination unit, used to determine whether the data packet is sent successfully;

[0043] The second loop unit is used for returning to the step of "sending the data packet to the LCD component" if the fifth judgment unit determines that the data packet is not sent successfully;

[0044] The second judgment unit is used to judge whether it is necessary to wait for the LCD component to respond;

[0045] A reading unit, configured to read response data of the LCD component if the second judging unit judges that it is necessary to wait for a response from the LCD component;

[0046] A third judging unit, used to judge whether the buffer data packet has been sent;

[0047] The first loop unit is further configured to return to the step of "selecting data packets in sequence" if the third judgment unit determines that the data packets in the buffer have not been sent completely;

[0048] A disconnection unit, used for completing the test and disconnecting the connection if the third judgment unit determines that the data packet in the buffer is sent completely;

[0049] As a preferred solution for the test equipment of the airborne intelligent display, it also includes:

[0050] A sixth judging unit, used to judge whether the response data has been read completely;

[0051] The third loop unit is used to return to the step of "reading the response data of the LCD component if it is determined that it is necessary to wait until the LCD component responds" if the sixth determination unit determines that the response data has not been read completely.

[0052] As a preferred solution for the test equipment of the airborne intelligent display, it also includes:

[0053] A fourth determination unit, used to determine whether a TCP transmission protocol server needs to be created according to the data packet;

[0054] a creating unit, configured to create a TCP transmission protocol server if the fourth determining unit determines that a TCP transmission protocol server needs to be created according to the data packet;

[0055] As a preferred solution for the test equipment of the airborne intelligent display, it also includes:

[0056] A fourth determination unit, used for determining whether a UDP transport protocol server needs to be created according to the data packet;

[0057] a creating unit, configured to create a UDP transport protocol server if the fourth determining unit determines that a UDP transport protocol server needs to be created according to the data packet;

[0058] As a preferred solution for the test equipment of the airborne intelligent display, it also includes:

[0059] The collection and analysis unit is used to collect and analyze the ARP requests sent by the LCD components;

[0060] Create a unit for setting up a DHCP server based on ARP request packets.

[0061] Beneficial effects of the present invention: The present invention proposes a method and device for testing an airborne intelligent display, which can automatically identify client ARP data packet requests and record network data information, and automatically establish various servers required by the client, convert and process the binary data according to the collected network data, and then repackage it, and then transmit the stored network data packets intact for restoration, thereby realizing automatic communication with the client, and completing the test of LCD components in this way. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0063] Figure 1 is a flow chart of a method for testing an airborne intelligent display according to an embodiment of the present invention;

[0064] Figure 2 is a schematic block diagram of the structure of a test device for an airborne intelligent display according to an embodiment of the present invention; DETAILED DESCRIPTION

[0065] The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0066] The following describes the embodiments of the present disclosure through specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. The present disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present disclosure.

[0067] Reference Figure 1 An embodiment of the present invention provides a method for testing an airborne intelligent display, comprising the following steps:

[0068] S1: Collect normal communication data between LCD components and onboard servers;

[0069] S2: storing the normal communication data as original data;

[0070] S3: Process and package the original data to obtain a data packet;

[0071] S4: sort the data packets and load them into the buffer for data transmission;

[0072] S5: Select the data packets in order;

[0073] S6: Determine whether the data packet needs to be sent to the LCD component;

[0074] S7: If not, return to step S5;

[0075] S8: If yes, the data packet is sent to the LCD component;

[0076] S9: Determine whether the data packet is sent successfully;

[0077] S10: If not, return to step S8; S11: determine whether it is necessary to wait for the LCD component to respond;

[0078] S12: If yes, read the response data of the LCD component;

[0079] S13: Determine whether the buffer data packet has been sent;

[0080] S14: If not, return to step S5;

[0081] S15: If yes, the test is completed and the connection is disconnected.

[0082] Wherein, after the step S12 of reading the response data of the LCD component, the method further includes:

[0083] S121: Determine whether the response data has been read;

[0084] S122: If not, return to step S12.

[0085] In the above embodiment, for the RD-FW series LCD components, by collecting the onboard environmental communication data, in the normal working mode on the aircraft, the LCD components and the airborne server are connected through a self-made data acquisition device, and under normal temperature conditions, the LCD components and the airborne server are placed in the normal working mode, and the normal communication data of the components and the airborne server are transmitted and forwarded without distortion. After forwarding, the data of the receiving device is stored as a data file package in pcap format, and the data at this time is an unprocessed original data file.

[0086] After data collection is completed, the original data file is formatted, data is calculated, and repackaged into a network data packet. After data packaging is completed, invalid data packets are filtered out after screening, and valid data packets are selected to send the packaged data packets to the LCD component through the PCIE network card device and the USB to network card device for data communication connection. According to the content of the collected data packet, it is determined whether the current data packet needs to wait for the feedback status of the component end. If it does not need to wait for the response of the component end, the next data packet will be sent. If the data packet needs to receive a response from the component before continuing to the next step, the software end is set to wait until the response command sent by the component is received before continuing to the next step.

[0087] In some embodiments, before the step S1 of collecting normal communication data of the LCD component and the onboard server, the method further includes:

[0088] S101: Collect and analyze the ARP request sent by the LCD component;

[0089] S102: Building a DHCP server according to the ARP request data packet.

[0090] In the above embodiment, for the LCD component that sends an ARP request after startup, the device end automatically collects and analyzes the ARP request of the component end, preferentially builds a DHCP server according to the ARP request data packet to automatically assign a network address to the component end, and records the network data information of the component for communication with the component end.

[0091] In some embodiments, after the step S3 of processing and packaging the original data to obtain a data packet, the method further includes:

[0092] S31: judging whether it is necessary to create a TCP transport protocol server according to the data packet;

[0093] S32: If yes, create a TCP transport protocol server.

[0094] In the above embodiment, when sending data, according to the flag of the data packet, it is determined whether the current data packet is the TCP transmission protocol. If the obtained flag is the TCP data transmission protocol, it is necessary to first determine the three-way handshake process of the TCP transmission protocol, calculate the network address of the client and the network address of the server required for the current communication according to the collected data packet, and query whether the current network address exists. If the corresponding server network address does not exist, it is necessary to automatically add the corresponding server address to the current device. If the current data packet is the TCP transmission protocol, it is necessary to build a TCP transmission protocol server. After the server is built, wait for the component end to send a syn data packet to request a connection. The server end receives the connection request and sends a syn+ack synchronization confirmation message. After receiving the synchronization confirmation data packet sent by the server, the component end feeds back a confirmation message ack to the server, thereby completing the channel connection of the data communication of the TCP transmission protocol. After that, the data information sent by the port of this network address of the component end is detected, and all communication is carried out through this channel. When encountering a new address or port, it is necessary to build a new network connection channel for data communication transmission in the same way. Each different network address or data port needs to build a corresponding data communication channel for data transmission.

[0095] In some embodiments, after the step S3 of processing and packaging the original data to obtain a data packet, the method further includes:

[0096] S33: judging whether it is necessary to create a UDP transport protocol server according to the data packet;

[0097] S34: If yes, create a UDP transport protocol server.

[0098] In the above embodiment, connectionless UDP data transmission, network data packet information includes source MAC address information, destination MAC address information, source IP address information, source port information, destination address information, destination port information, data length information, checksum, valid data information, etc., there is no need to wait for the data response request from the component end, the data command is repackaged, and the valid data command is sent to the correct destination address and destination port through the corresponding network address and communication port of the server end, without waiting for any response from the component end.

[0099] In some other embodiments, data transmission protocols that require data interaction, such as the TFTP data communication protocol and the GVSP data communication protocol that need to wait for a request from the component side, need to wait for a response command from the component side after the server side sends a command request. A TFTP server and a GVSP server can be built on the server side. After the building is completed, the server side can automatically respond to data requests from the component side, thereby completing the data loading function and the video data stream playback function of the component side test software.

[0100] In summary, the testing method of the airborne intelligent display of the present invention can automatically identify the client's ARP data packet request and record the network data information, and automatically establish various servers required by the client, convert and process the binary data according to the collected network data, and then repackage it, and then transmit the stored network data packet intact for restoration, thereby realizing automatic communication with the client, and completing the test of LCD components in this way.

[0101] And it has the following advantages:

[0102] Since ARP data cannot be automatically detected, the software is packaged into a dll library file through program design, and the host program of the upper computer calls the independently designed dll library function to collect ARP data packets. When the DHCP server receives the ARP data packet requested by the client, it automatically allocates the IP address, detects the corresponding ARP data packet, and saves all network information of the requesting client for backup.

[0103] In response to the IP address request of the newly added device, the server address can be automatically added to respond to the communication request. For the connection request actively sent by the client to the server, the software automatically adds the required IP address on the server to respond to the client's connection request. After the data communication with the client is completed, the server disconnects and automatically deletes the corresponding IP address information, releasing the corresponding IP address resources for subsequent reuse.

[0104] Effectively restore TCP protocol data with reliable connection, automatically parse the collected data packet protocol data through binary file data, and automatically build the server required by the client that issues the request on the PC side through program design. By analyzing and judging the data packets, the valid TCP protocol data required by the component side is repackaged and forwarded sequentially.

[0105] For effective restoration of UDP protocol data with data interaction, such as the application layer protocol GVSP protocol video stream based on UDP protocol transmission, each transmission must start from 0. After the server-side data stream waits for the client to respond, it is transmitted in the order of data stream transmission. Only then will the video data stream transmission get a valid data response.

[0106] Reference Figure 2 In an embodiment of the present application, a test device for an airborne intelligent display is also provided, including:

[0107] Data acquisition unit, used to collect normal communication data between LCD components and onboard servers;

[0108] A storage unit, used for storing the normal communication data as original data;

[0109] A data processing unit, used for processing and packaging the original data to obtain a data packet;

[0110] A sorting unit, used to sort the data packets and load them into a buffer for data transmission;

[0111] A selection unit, used for selecting data packets in sequence;

[0112] A first judging unit, used for judging whether the data packet needs to be sent to the LCD component;

[0113] A first loop unit is used for returning to the step of "selecting data packets in sequence" if the first determination unit determines that the data packet does not need to be sent to the LCD component;

[0114] A sending unit, configured to send the data packet to the LCD component if the first judging unit judges that the data packet needs to be sent to the LCD component;

[0115] A fifth determination unit, used to determine whether the data packet is sent successfully;

[0116] The second loop unit is used for returning to the step of "sending the data packet to the LCD component" if the fifth judgment unit determines that the data packet is not sent successfully;

[0117] The second judgment unit is used to judge whether it is necessary to wait for the LCD component to respond;

[0118] A reading unit, configured to read response data of the LCD component if the second judging unit judges that it is necessary to wait for a response from the LCD component;

[0119] A third judging unit, used to judge whether the buffer data packet has been sent;

[0120] The first loop unit is further configured to return to the step of "selecting data packets in sequence" if the third judgment unit determines that the data packets in the buffer have not been sent completely;

[0121] A disconnection unit, used for completing the test and disconnecting the connection if the third judgment unit determines that the data packet in the buffer is sent completely;

[0122] In some embodiments, the test equipment for the onboard intelligent display further includes:

[0123] A sixth judging unit, used to judge whether the response data has been read completely;

[0124] The third loop unit is used to return to the step of "reading the response data of the LCD component if it is determined that it is necessary to wait until the LCD component responds" if the sixth determination unit determines that the response data has not been read completely.

[0125] In some embodiments, the test equipment for the onboard intelligent display further includes:

[0126] A fourth determination unit, used to determine whether a TCP transmission protocol server needs to be created according to the data packet;

[0127] a creating unit, configured to create a TCP transmission protocol server if the fourth determining unit determines that a TCP transmission protocol server needs to be created according to the data packet;

[0128] In some embodiments, the test equipment for the onboard intelligent display further includes:

[0129] A fourth determination unit, used for determining whether a UDP transport protocol server needs to be created according to the data packet;

[0130] a creating unit, configured to create a UDP transport protocol server if the fourth determining unit determines that a UDP transport protocol server needs to be created according to the data packet;

[0131] In some embodiments, the test equipment for the onboard intelligent display further includes:

[0132] The collection and analysis unit is used to collect and analyze the ARP requests sent by the LCD components;

[0133] Create a unit for setting up a DHCP server based on ARP request packets.

[0134] In the description of the present invention, it is necessary to understand that the terms "middle", "length", "up", "down", "front", "back", "vertical", "horizontal", "inside", "outside", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0135] In the present invention, unless otherwise clearly specified and limited, the first feature "on" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. "Multiple" means at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

[0136] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0137] The above is only for explaining the implementation mode of the present invention and is not intended to limit the present invention. For those skilled in the art, any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention without creative work should be included in the protection scope of the present invention.

Claims

1. A method for testing an airborne intelligent display, characterized in that: The following steps are involved: S1: Collect normal communication data between LCD components and onboard servers; S2: storing the normal communication data as original data; S3: Process and package the original data to obtain a data packet; S4: sort the data packets and load them into the buffer for data transmission; S5: Select the data packets in order; S6: Determine whether the data packet needs to be sent to the LCD component; S7: If not, return to step S5; S8: If yes, the data packet is sent to the LCD component; S9: Determine whether the data packet is sent successfully; S10: If not, return to step S8; S11: Determine whether it is necessary to wait for the LCD component to respond; S12: If yes, read the response data of the LCD component; S13: Determine whether the buffer data packet has been sent; S14: If not, return to step S5; S15: If yes, the test is completed and the connection is disconnected; Wherein, after the step S3 of processing and packaging the original data to obtain the data packet, the method further includes: S31: judging whether it is necessary to create a TCP transport protocol server according to the data packet; S32: If yes, create a TCP transport protocol server; S33: judging whether it is necessary to create a UDP transport protocol server according to the data packet; S34: If yes, create a UDP transport protocol server; Before the step S1 of collecting normal communication data of the LCD component and the onboard server, the method further includes: S101: Collect and analyze the ARP request sent by the LCD component; S102: Building a DHCP server according to the ARP request data packet.

2. The method for testing an airborne intelligent display according to claim 1, characterized in that: After the step S12 of reading the response data of the LCD component, the method further includes: S121: Determine whether the response data has been read; S122: If not, return to step S12.

3. A test device for an airborne intelligent display, characterized in that: include: Data acquisition unit, used to collect normal communication data between LCD components and onboard servers; A storage unit, used for storing the normal communication data as original data; A data processing unit, used for processing and packaging the original data to obtain a data packet; A sorting unit, used to sort the data packets and load them into a buffer for data transmission; A selection unit, used for selecting data packets in sequence; A first judging unit, used for judging whether the data packet needs to be sent to the LCD component; The first loop unit is used for returning to the step of "selecting data packets in sequence" if the first determination unit determines that the data packet does not need to be sent to the LCD component; A sending unit, configured to send the data packet to the LCD component if the first judging unit judges that the data packet needs to be sent to the LCD component; A fifth determination unit, used to determine whether the data packet is sent successfully; The second loop unit is used for returning to the step of "sending the data packet to the LCD component" if the fifth judgment unit determines that the data packet is not sent successfully; The second judgment unit is used to judge whether it is necessary to wait for the LCD component to respond; A reading unit, configured to read response data of the LCD component if the second judging unit judges that it is necessary to wait for a response from the LCD component; A third judging unit, used to judge whether the buffer data packet has been sent; The first loop unit is further configured to return to the step of "selecting data packets in sequence" if the third judgment unit determines that the data packets in the buffer have not been sent completely; A disconnection unit, used for completing the test and disconnecting the connection if the third judgment unit determines that the data packet in the buffer is sent completely; A fourth determination unit, used to determine whether a TCP transmission protocol server needs to be created according to the data packet; a creating unit, configured to create a TCP transmission protocol server if the fourth determining unit determines that a TCP transmission protocol server needs to be created according to the data packet; A fourth determination unit, used for determining whether a UDP transport protocol server needs to be created according to the data packet; a creating unit, configured to create a UDP transport protocol server if the fourth determining unit determines that a UDP transport protocol server needs to be created according to the data packet; The collection and analysis unit is used to collect and analyze the ARP requests sent by the LCD components; Create a unit for setting up a DHCP server based on ARP request packets.

4. The test equipment for an airborne intelligent display according to claim 3, characterized in that: Also includes: A sixth judging unit, used to judge whether the response data has been read completely; The third loop unit is used to return to the step of "reading the response data of the LCD component if it is determined that it is necessary to wait until the LCD component responds" if the sixth judgment unit determines that the response data has not been read completely.

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