A ground test system and method based on data recorder

Abstract

The present invention provides a ground test system and method based on a data recorder, including ground test equipment and a host computer, and divides several major functions of the test equipment into several modules to respectively implement the functions of each module, which mainly include a PCM analog signal source module, a command sending module, a data receiving module, a data recorder status monitoring module, an Ethernet communication module and a power supply module, thereby improving the versatility of the automated test system, achieving functional modularization of the hardware, and improving the overall operation stability of the system.

Description

Technical Field

[0001] The present disclosure relates to the technical field of data recorder testing, and in particular to a ground testing system and method based on a data recorder. Background Art

[0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art.

[0003] The operation data logger generally consists of four parts: communication parameters, signal transmission acquisition unit, communication data recording unit, display unit and shell. The data logger is used in the test system. The data logger ground test equipment is a special ground test equipment for the measurement system data logger. It has the functions of data storage, remote data reading, data formatting, real-time monitoring of data reception and data logger working status, and post-online reading to high-speed return of stored data.

[0004] In the electric power industry, UAVs are widely used in various monitoring scenarios of power equipment and cables, and data loggers are installed on UAVs to store and transmit back a large amount of effective telemetry data. However, the functional test of the data logger in the aircraft is related to the accuracy and integrity of data transmission. The automated test system for the data logger originally used manual inspection, which took a long time to test, was inefficient, difficult to find the test rules, difficult to troubleshoot when faults occurred, and specialized equipment for special inspections. The versatility is relatively poor, resulting in serious waste of resources. At present, the shortcomings of the versatility of the automated test system have not been improved, and it is difficult to achieve functional modularization of the hardware, and the overall operation of the system lacks stability. Summary of the invention

[0005] In order to solve the above problems, the present disclosure proposes a ground test system and method based on a data recorder. The present disclosure designs a ground test equipment, and divides the functions of the test equipment into multiple modules to respectively implement the functions of each module, and uses a status monitoring module to realize real-time monitoring of the data recorder status.

[0006] According to some embodiments, the present disclosure adopts the following technical solutions:

[0007] A ground test system based on a data logger, comprising:

[0008] Ground test equipment, the ground test equipment includes a ground control module, the ground control module generates a control command and transmits the command signal to the data recorder through a command sending module, and the data recorder receives external data and transmits it back to the ground control module through a data receiving module;

[0009] The ground control module is connected to the host computer via the host computer interface module;

[0010] According to other embodiments, the present disclosure also adopts the following technical solutions:

[0011] A test method for a ground test system based on a data recorder, comprising:

[0012] Stand-alone self-test mode, specifically:

[0013] The ground test equipment simulates the UAV aircraft equipment, sends 1 channel of PCM data to the data recorder, and controls the data recorder to start recording, monitors its working status in real time, and displays it through the host computer. After the recording is completed, the ground test equipment sends a stop command to control the data recorder to stop recording, and then sends a read back command to retrieve all the data in the data recorder through the read back path, and performs data analysis and comparison through the host computer to complete the test.

[0014] The overall joint test mode is as follows:

[0015] The data recorder is installed inside the UAV aircraft and connected to the data integrator through an internal cable network. The data integrator sends the UAV aircraft telemetry data to the data recorder. At the same time, the ground test equipment is connected to the UAV aircraft to remotely control and monitor the status of the data recorder. Before the UAV aircraft takes off, the ground test equipment starts real-time monitoring of the data recorder, displays it through the host computer, and performs data analysis and comparison to complete the test.

[0016] Beneficial Effects

[0017] Compared with the prior art, the beneficial effects of the present invention are: through the modular design of the test system, accurate performance testing of the data recorder can be carried out, the status of the data recorder in the UAV aircraft can be monitored, problems can be discovered in time, and data loss in the subsequent power use can be prevented, which affects the operation of the power grid equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings constituting a part of the present disclosure are used to provide a further understanding of the present disclosure. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation on the present disclosure.

[0019] Figure 1 This is the overall design architecture diagram of the disclosed system;

[0020] Figure 2 This is a workflow diagram for the single-machine self-test mode disclosed herein;

[0021] Figure 3 This is a workflow diagram for the overall joint test mode of the present disclosure; DETAILED DESCRIPTION

[0022] The present disclosure is further described below in conjunction with the accompanying drawings and embodiments.

[0023] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanation of the present disclosure. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present disclosure belongs.

[0024] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0025] Those skilled in the art will appreciate that the embodiments of the present disclosure may be provided as methods, systems, or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present disclosure may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0026] Example 1

[0027] The data recorder ground test equipment is a special ground test equipment for the measurement system data recorder, which has the functions of data storage, remote data reading, data formatting, real-time monitoring of the working status of the received data and the data recorder, and high-speed return of the stored data after the online reading. The ground test equipment designed by the present disclosure belongs to a part of the telemetry data ground test system, which mainly completes the simulation of the aircraft telemetry signal, and reads back the data after the data recorder is stored, and returns it to the host computer for data analysis.

[0028] This disclosure proposes a ground test system based on a data logger. When developing a ground test equipment solution, it is necessary to consider as many aspects as possible, have corresponding theoretical support, and use modularization and standardization as the guiding design ideas, and fully draw on other successful cases and development experience, which is conducive to the subsequent function upgrade, module expansion and maintenance of the equipment. This disclosure proposes a more comprehensive design solution based on the technical indicators and design requirements of the storage system.

[0029] The whole system consists of two parts, including a host computer and a ground test equipment, such as Figure 1As shown, the first part is the host computer, which uses a reinforced notebook with design features such as reinforcement, waterproof keyboard, anti-electromagnetic interference screen, portability, reliability and stability. With supporting ground test software and ground test equipment, it can realize the single-machine test and data reading and analysis functions of the data logger. The second part is the ground test equipment. Based on the modular design concept, the several major functions of the test equipment are divided into several modules to implement the functions of each module respectively. It mainly includes PCM analog signal source module, command sending module, data receiving module, data logger status monitoring module, Ethernet communication module and power supply module.

[0030] The ground test equipment includes a ground control module, which generates control instructions and transmits the instruction signal to the data recorder through the command sending module. The data recorder receives external data and returns it to the ground control module through the data receiving module; the ground control module is connected to the host computer through the host computer interface module.

[0031] The ground test equipment includes an online control interface, through which the ground test equipment instructs the data recorder online. The ground test equipment includes a status monitoring interface, through which the ground test equipment monitors the status data of the data recorder, receives the analog signal sent by the data recorder through the A / D chip in the status monitoring interface, and converts it into a digital quantity and transmits it back to the host computer.

[0032] The ground test equipment also includes a PCM analog signal source module, which uses an asynchronous serial 422 format to send data and simulates a serial data stream of a bit rate according to a clock provided by a crystal oscillator.

[0033] The ground test equipment also includes a power supply module with two power supply modes: it can be powered by AC220V or by a large-capacity lithium battery.

[0034] When the ground test equipment receives the command sent by the host computer, after internal processing by the ground control module, the parallel data is sent to the command sending module, and the command sending module converts the command signal into voltage and sends it to the data recorder through the cable.

[0035] The data receiving module matches the transmitting end of the data recorder, and uses an equalizer to compensate the signal transmitted through the long line. Then the interface chip converts the high-speed serial data into parallel data and reconstructs the parallel data clock. Under the trigger of the reconstructed clock, data is received to realize high-speed return of the data recorded by the data recorder.

[0036] The ground control module can also be connected to a mobile phone via a PC interface module.

[0037] Specifically, each module has the following functions:

[0038] PCM analog signal source module: This module uses asynchronous serial 422 format to send data. The control core FPGA simulates a serial data stream with a bit rate of 9.8304Mbps according to the clock provided by the crystal oscillator, and defines the frame format as 192 (columns) × 128 (rows). X"EB90" is used as a row mark at the end of each row, and X"146F" is used as a frame mark at the end of each frame. It is designed in full accordance with the actual test situation to ensure that the data format received by the data recorder is exactly the same as that during actual measurement.

[0039] Command sending module: When the ground test equipment receives the command sent by the host computer, it sends the parallel data to the command sending module after internal processing by the FPGA. The sending module chip converts the command signal into voltage and sends it to the data recorder through the cable.

[0040] Data receiving module: This module must match the transmitting end of the data recorder, and use an equalizer to compensate the signal transmitted through the long line. Then the interface chip converts the high-speed serial data into parallel data and reconstructs the parallel data clock. Under the trigger of the reconstructed clock, data reception is performed to achieve high-speed readback of the entire experimental data recorded by the data recorder.

[0041] Data logger status monitoring module: This module receives the analog signal sent by the data logger through the A / D chip, converts it into digital quantity and transmits it back to the host computer, realizing the real-time monitoring function of the data logger status.

[0042] Power supply module: The entire ground test system has two power supply systems, which can be powered by AC220V or by large-capacity lithium batteries, meeting the needs of powering ground test equipment in different occasions.

[0043] In addition, the communication method used to connect the computer and the ground test equipment is Ethernet.

[0044] Ethernet has the following advantages:

[0045] (1) High data transmission rate, providing sufficient bandwidth;

[0046] (2) The communication protocol is the same, which facilitates integrated development;

[0047] (3) The network has adopted open and interactive data storage technology that is different from the past;

[0048] (4) The technology is mature, making maintenance and upgrades more convenient;

[0049] (5) Stable performance, not prone to disconnection.

[0050] Example 2

[0051] The present disclosure also provides a test method for a ground test system based on a data recorder, using the system in embodiment 1, comprising:

[0052] Ground test equipment, the ground test equipment includes a ground control module, the ground control module generates control instructions and transmits the instruction signal to the data recorder through the command sending module, the data recorder receives external data and returns it to the ground control module through the data receiving module; the ground control module is connected to the host computer through the host computer interface module.

[0053] The major functions of the test equipment are divided into several modules to implement the functions of each module, which mainly include PCM analog signal source module, command sending module, data receiving module, data recorder status monitoring module, Ethernet communication module and power supply module.

[0054] The specific system working method is divided into two working modes. The first mode is the single machine self-test mode, such as Figure 2 As shown in the figure, the second working mode is the overall joint test mode. Figure 3 As shown, specifically:

[0055] Stand-alone self-test mode, such as Figure 2 As shown:

[0056] The ground test equipment simulates the UAV aircraft equipment, sends 1 channel of PCM data to the data recorder, and controls the data recorder to start recording, monitors its working status in real time, and displays it through the host computer. After the recording is completed, the ground test equipment sends a stop command to control the data recorder to stop recording, and then sends a read back command to retrieve all the data in the data recorder through the read back path, and performs data analysis and comparison through the host computer to complete the test.

[0057] The entire system consists of a closed loop consisting of computers, ground test equipment and data recorders, which can detect various performances of the entire system and conduct a comprehensive test of the functions of the data recorder.

[0058] Overall joint test mode, such as Figure 3 Shown: Specifically:

[0059] The data recorder is installed inside the UAV aircraft and connected to the data integrator through an internal cable network. The data integrator sends the UAV aircraft telemetry data to the data recorder. At the same time, the ground test equipment is connected to the UAV aircraft to remotely control and monitor the status of the data recorder. Before the UAV aircraft takes off, the ground test equipment starts real-time monitoring of the data recorder, displays it through the host computer, and performs data analysis and comparison to complete the test.

[0060] Some other embodiments also include a standby port data readback mode, in which the standby port reading mode is a working mode in which the flight data in the Flash is read back using the standby port reading device after the data recorder is hard recovered and the main control board cannot work. In this mode, the ground computer can only read back the data and cannot perform other operations on the Flash.

[0061] The present disclosure is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present disclosure. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0062] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0063] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0064] The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

[0065] Although the above describes the specific implementation methods of the present disclosure in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present disclosure. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present disclosure, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the present disclosure.

Claims

1. A ground test system based on a data logger, characterized in that: include: Ground test equipment, the ground test equipment includes a ground control module, the ground control module generates a control command and transmits the command signal to the data recorder through a command sending module, and the data recorder receives external data and transmits it back to the ground control module through a data receiving module; When the ground test equipment receives the command sent by the host computer, after internal processing by the ground control module, the parallel data is sent to the command sending module, and the command sending module converts the command signal into voltage and sends it to the data recorder through the cable; The data receiving module matches the transmitting end of the data recorder, and performs signal compensation on the signal transmitted through the long line through the equalizer. Then the interface chip converts the high-speed serial data into parallel data, and rebuilds the parallel data clock at the same time. Under the triggering of the reconstructed clock, the data is received to realize the high-speed return of the data recorded by the data recorder. The ground control module is connected to the host computer via the host computer interface module.

2. A ground test system based on a data logger as claimed in claim 1, characterized in that: The ground test equipment comprises an online control interface, and the ground test equipment instructs the data recorder online through the online control interface.

3. A ground test system based on a data logger as claimed in claim 1, characterized in that: The ground test equipment includes a status monitoring interface, through which the ground test equipment monitors the status data of the data recorder, receives the analog signal sent by the data recorder through the A / D chip in the status monitoring interface, and converts it into a digital quantity and transmits it back to the host computer.

4. A ground test system based on a data logger as claimed in claim 1, characterized in that: The ground test equipment also includes a PCM analog signal source module, which uses an asynchronous serial 422 format to send data and simulates a serial data stream of a code rate according to a clock provided by a crystal oscillator.

5. A ground test system based on a data recorder as claimed in claim 1, characterized in that: The ground test equipment also includes a power supply module, which has two power supply modes: it can be powered by AC220V or by a large-capacity lithium battery.

6. A ground test system based on a data logger as claimed in claim 1, characterized in that: The ground control module can also be connected to a mobile phone via a PC interface module.

7. A test method for a ground test system based on a data recorder, used to implement a ground test system based on a data recorder according to any one of claims 1 to 6, characterized in that: Includes stand-alone self-test mode, specifically: The ground test equipment simulates the UAV aircraft equipment, sends 1 channel of PCM data to the data recorder, and controls the data recorder to start recording, monitors its working status in real time, and displays it through the host computer. After the recording is completed, the ground test equipment sends a stop command to control the data recorder to stop recording, and then sends a read back command to retrieve all the data in the data recorder through the read back path, and performs data analysis and comparison through the host computer to complete the test.

8. A test method for a ground test system based on a data recorder, characterized in that: Used to implement a ground test system based on a data recorder as described in any one of claims 1 to 6, Including the overall joint test mode, specifically: The data recorder is installed inside the UAV aircraft and connected to the data integrator through an internal cable network. The data integrator sends the UAV aircraft telemetry data to the data recorder. At the same time, the ground test equipment is connected to the UAV aircraft to remotely control and monitor the status of the data recorder. Before the UAV aircraft takes off, the ground test equipment starts real-time monitoring of the data recorder, displays it through the host computer, and performs data analysis and comparison to complete the test.

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