Satellite power quality automatic testing system and method

Abstract

A kind of satellite power quality automatic test system and method, first build including total control computer, test computer, oscilloscope, network switch automatic test system, utilize test computer to receive the instruction issued by total control, to oscilloscope relevant parameter configuration and test data reading, in total control, can arrange test sequence according to test demand, and carry out interpretation, and automatically generate test report, can complete satellite power quality automation test, improve test efficiency, reduce the uncertainty caused by manual operation, all operations are automatically completed by system, improve the accuracy of test.

Description

Technical Field

[0001] This invention relates to an automatic testing system and method for satellite power quality, belonging to the field of comprehensive satellite testing technology. Background Technology

[0002] The satellite power system is a subsystem that generates, stores, transforms, regulates, and distributes electrical energy on board, and is the primary condition for ensuring the normal operation of the satellite in orbit. The quality parameters of the power supply are necessary conditions for determining the quality of its power supply, and directly affect the satellite's flight safety and lifespan.

[0003] Currently, in satellite integrated testing, power quality testing often relies on manual operation of oscilloscopes to collect data on the impact of power-on and power-off cycles on the satellite's power buses for each subsystem and individual unit, thereby evaluating the quality of the satellite power system. This manual operation is inefficient, inaccurate, and prone to errors. With the development of aerospace technology and the increasing demand for rapid space access worldwide, large-scale satellite networking applications are becoming more prevalent, leading to a trend towards diversification, mass production, and modularization of satellites. This increase in the number of satellites places higher demands on traditional satellite integrated testing methods, which suffer from low integration of testing equipment and cumbersome manual operation. Summary of the Invention

[0004] The technical problem solved by this invention is to address the issues of low efficiency, poor accuracy, and low automation in existing technologies by proposing an automatic testing system and method for satellite power quality.

[0005] The present invention solves the above-mentioned technical problem through the following technical solution:

[0006] An automatic satellite power quality testing system includes a central control computer, a test computer, an oscilloscope, and a network switch. The central control computer, the test computer, and the oscilloscope are all connected to the network switch via network cables. Channel 1 and Channel 2 of the oscilloscope are respectively connected to a voltage probe and a current probe. The oscilloscope is connected to the test point of a designated electrical connector on the satellite through the voltage probe and the current probe, respectively.

[0007] The central control computer runs a preset program to arrange the test sequence of the test points and send multicast commands. The test computer runs the test program and receives multicast commands to set parameters. During the test, the central control computer sends preset power-off and power-on commands to the load equipment. After receiving these commands, the test computer sets the oscilloscope parameters and acquires data. The oscilloscope acquires and interprets the peak-to-peak voltage and maximum current of the satellite. The central control computer, the test computer, and the oscilloscope exchange information through a network switch.

[0008] The test computer is equipped with a human-computer interaction interface. Multicast command communication configuration and oscilloscope IP address configuration are both implemented through the human-computer interaction interface. The multicast command communication configuration includes the master control command multicast IP address and port number. The oscilloscope IP address configuration is used to ensure normal communication between the test computer and the master control computer, and between the test computer and the oscilloscope.

[0009] The test program is used to load the configuration file corresponding to the load device power-on / off preset instructions and judgment conditions required in the model test task. It configures the oscilloscope parameters according to the actual power-on / off preset instructions. When the test program receives the load device power-on / off instruction, it performs the acquisition of oscilloscope voltage and current data according to the preset delay time in the load device power-on / off preset instructions. Data acquisition supports triggered acquisition and delayed acquisition.

[0010] The test program reads the peak-to-peak voltage and peak-to-peak current values ​​of the load device after power-on and power-off and after power-on stabilization, collected by the oscilloscope. It then interprets the results according to the judgment conditions specified in the power supply design document to determine whether the current test results meet the judgment conditions specified in the power supply design document. If they do, the test is completed and the satellite power supply quality corresponding to the current load device under test is up to standard. If they do not meet the conditions, the satellite power supply quality corresponding to the current load device under test is not up to standard.

[0011] The test program checks the received load device power-off preset commands, determines the remaining unreceived load device power-off preset commands, displays the names of the received load device power-off preset commands and corresponding interpretation information in real time, and automatically generates a test report, which includes the test time and location, parameter interpretation data, waveforms and waveform names.

[0012] An automatic test method for satellite power quality includes:

[0013] An automated testing system was set up, including a central control computer, a test computer, an oscilloscope, and a network switch. The voltage and current probes of the oscilloscope were connected to the test points of the designated electrical connectors on the satellite.

[0014] Run the test program on the test computer, set the multicast IP address and port number of the master control command, and achieve successful communication with the master control computer;

[0015] Load the configuration file containing the power-on / off preset commands and judgment conditions required for the current satellite model test;

[0016] Set the oscilloscope's IP address in the test program to achieve successful communication with the oscilloscope;

[0017] The central control computer sends power-on / power-off commands to control the power supply to and from the satellite and its payload equipment.

[0018] The test program configures the relevant parameters of the oscilloscope according to the power-on / power-off preset command, and waits for the acquisition to be triggered or delayed.

[0019] After the oscilloscope completes data acquisition, the test program reads the test data and results for that test and saves them locally.

[0020] After the test is completed, the test program generates a test report based on the test data and test results.

[0021] The central control computer sends different power-on / power-off preset commands and power-on / power-off commands according to different test scenarios. The test data includes voltage peak-to-peak value, current peak-to-peak value, and waveform. If it is necessary to continue testing after the current test is completed, the required power-on / power-off preset command is switched according to the test scenario.

[0022] During the testing process, the oscilloscope is set according to the specific test scenario. The test scenarios include the instantaneous power-on and power-off of the satellite, the instantaneous power-off of the load equipment, and the transient voltage change and leakage current characteristics of the satellite power supply after the load equipment has stabilized.

[0023] Channel 1 of the oscilloscope measures the bus voltage of the satellite power supply, while channel 2 measures the leakage current between the negative line of the power supply bus and the structural ground of the entire satellite.

[0024] The specific tests for the transient characteristics of the bus voltage and leakage current at the moment of power failure of the satellite are as follows:

[0025] Channel 1: Amplitude 10V / Div, use 10V / Div for satellite 42V bus, use 5V / Div for 28V bus, ensure complete waveform capture, time 200ms / Div, channel impedance 1MΩ, DC range, full bandwidth, measure peak-to-peak value.

[0026] Channel 2: Amplitude 200mA / Div, Time 200ms / Div, Channel Impedance 50Ω, DC range, Full bandwidth, Measure peak-to-peak value;

[0027] The specific tests for the transient characteristics of the bus voltage and leakage current at the moment of power failure of the load equipment are as follows:

[0028] Channel 1: Amplitude 200mV / Div, Time 200ms / Div, Channel Impedance 1MΩ, AC Range, 20M Bandwidth, Measure Peak-to-Peak Value;

[0029] Channel 2: Amplitude 200mA / Div, Time 200ms / Div, Channel Impedance 50Ω, DC range, Full bandwidth, Measure peak-to-peak value;

[0030] The bus voltage ripple and leakage current tests after the load equipment is running stably are as follows:

[0031] Channel 1: Amplitude 100mV / Div, Time 4ms / Div, Channel Impedance 1MΩ, AC Range, 20M Bandwidth, Measure Peak-to-Peak Value;

[0032] Channel 2: Amplitude 100mA / Div, Time 4ms / Div, Channel Impedance 50Ω, DC range, 20M bandwidth, Measure peak-to-peak value.

[0033] The test program generates a test report based on the test data and test results. The test report is in Microsoft Word format and includes the test scenario and screenshots of the oscilloscope interface.

[0034] The advantages of this invention compared to the prior art are:

[0035] This invention provides an automated satellite power quality testing system and method. The system includes a central control computer, a test computer, an oscilloscope, and a network switch. The test computer receives instructions from the central control computer, configures relevant parameters on the oscilloscope, and reads test data. The central control computer can arrange test sequences according to testing requirements, interpret the results, and automatically generate test reports. This automated satellite power quality testing improves testing efficiency, reduces uncertainties caused by manual operation, and ensures all operations are completed automatically, thus enhancing testing accuracy. Attached Figure Description

[0036] Figure 1 A schematic diagram illustrating the working principle of the automatic satellite power quality testing system provided for the invention in practical application.

[0037] Figure 2 A flowchart illustrating the testing method of the automatic satellite power quality testing system provided for the invention; Detailed Implementation

[0038] An automated testing system and method for satellite power supply quality is disclosed. First, an automated testing system is built, comprising a central control computer, a test computer, an oscilloscope, and a network switch. The test computer receives instructions from the central control computer, configures relevant parameters on the oscilloscope, and reads test data. The central control computer can arrange test sequences according to testing requirements, interpret the results, and automatically generate test reports. This automated testing of satellite power supply quality improves testing efficiency, reduces uncertainties caused by manual operation, and ensures that all operations are completed automatically by the system, thus improving testing accuracy.

[0039] The following description, in conjunction with the accompanying drawings and preferred embodiments, provides further details:

[0040] In the current embodiment, the satellite power quality automatic testing system, such as Figure 1As shown, the central control computer, test computer, and oscilloscope are all connected to the network switch via network cables. Channel 1 and Channel 2 of the oscilloscope are connected to the voltage probe and the current probe, respectively. The oscilloscope is connected to the test point of the designated electrical connector of the satellite through the voltage probe and the current probe, respectively.

[0041] The central control computer runs a preset program to arrange the test sequence of the test points and send multicast commands. The test computer runs the test program and receives multicast commands to set parameters. During the test, the central control computer sends preset power-on / power-off commands and power-on / power-off commands to the load equipment. After receiving them, the test computer sets the oscilloscope parameters. The oscilloscope collects and interprets the peak-to-peak voltage and maximum current of the satellite. The central control computer, the test computer, and the oscilloscope exchange information through a network switch.

[0042] The master control computer runs host computer software, primarily used for arranging test sequences and sending multicast commands. The test computers run test software to receive multicast commands sent by the master control computer.

[0043] Testers can configure the master control command multicast communication through the test software's human-computer interface, including the master control command multicast IP address and port number, as well as the oscilloscope IP address configuration, to ensure normal communication between the test computer, the master control computer, and the oscilloscope. The test software can load configuration files containing all the power-on / off commands and judgment criteria used in the testing of this model, and configure the oscilloscope parameters according to the actual power-on / off commands.

[0044] When the test software receives a power-on / power-off command from the central control computer, it executes oscilloscope parameter settings. Upon receiving a power-off trigger command from the load device, the oscilloscope performs waveform acquisition and saving actions according to the set delay time. Simultaneously, the test software reads and interprets the currently acquired voltage peak-to-peak and current peak-to-peak data to determine if the current test results match the design theoretical values. The test software can also view received trigger commands and any remaining unreceived trigger commands, save non-compliant items to a specified directory, display the received command names and interpretation information in real time, and automatically generate a test report including test time and location, parameter interpretation data, waveform, and waveform name.

[0045] The specific steps for testing satellite power quality are as follows: Figure 2 As shown, specifically:

[0046] According to such Figure 1 The structure shown connects the central control computer, the test computer, the oscilloscope, and the network switch, and connects the voltage and current probes of the oscilloscope to the test points of the designated electrical connectors on the satellite;

[0047] Configure the master control command multicast IP address and port number in the test software to achieve successful communication with the master control computer;

[0048] Load the configuration files containing all the power-on / power-off preset commands and judgment criteria used in the test of this model;

[0049] Configure the oscilloscope's IP address in the testing software to achieve successful communication with the oscilloscope;

[0050] Depending on the test scenario, the central control computer will send different preset power-on / power-off commands and power-on / power-off commands. The power-on / power-off commands mainly include power-on / power-off for the satellite and power-on / power-off for the satellite load equipment. The test software will configure the relevant parameters of the oscilloscope according to the preset commands and wait for trigger acquisition or delay acquisition.

[0051] Once the acquisition is completed, the test software reads the test data and results for that test and saves the test data and results locally. The test data includes voltage peak-to-peak, current peak-to-peak, and waveform, etc. If testing continues, repeat steps 5 and 6.

[0052] The test program reads the peak-to-peak voltage and peak-to-peak current data collected by the oscilloscope, and interprets the results according to the judgment conditions specified in the power supply design document. It determines whether the current test results meet the judgment conditions specified in the power supply design document. If they do, the test is completed and the quality of the current satellite power supply under test is up to standard. If they do not meet the conditions, the quality of the current satellite power supply under test is not up to standard.

[0053] After the test is completed, the testing software generates a test report based on the test data and results. The test report is in Microsoft Word format and includes the test scenario and screenshots of the oscilloscope interface.

[0054] During testing, the oscilloscope needs to be configured accordingly based on the specific test scenario. Test scenarios include the instantaneous power-on and power-off of the satellite, the instantaneous power-off of the load equipment, and the transient characteristics and leakage current of the satellite power supply bus voltage after the load equipment has stabilized.

[0055] The test was performed using two channels of an oscilloscope. Channel 1 measured the satellite power bus voltage, and channel 2 measured the leakage current between the negative power bus and the satellite's structural ground. The specific settings for oscilloscope channels 1 and 2 are as follows:

[0056] 1) Bus voltage transient characteristics and leakage current test during satellite power failure

[0057] Channel 1: Amplitude 10V / Div (10V / Div for 42V bus, 5V / Div for 28V bus, ensuring the zero line reference is below the screen to capture the complete waveform), Time 200ms / Div, Channel Impedance 1MΩ, DC range, Full bandwidth, Measure peak-to-peak value.

[0058] Channel 2: Amplitude 200mA / Div, Time 200ms / Div, Channel Impedance 50Ω, DC range, Full bandwidth, Measure peak-to-peak value.

[0059] 2) Bus voltage transient characteristics and leakage current test at the moment of power failure of the load equipment

[0060] Channel 1: Amplitude 200mV / Div, Time 200ms / Div, Channel Impedance 1MΩ, AC Range, 20M Bandwidth, Measure Peak-to-Peak Value;

[0061] Channel 2: Amplitude 200mA / Div, Time 200ms / Div, Channel Impedance 50Ω, DC range, Full bandwidth, Measure peak-to-peak value.

[0062] 3) Bus voltage ripple and leakage current test after the load equipment is running stably

[0063] Channel 1: Amplitude 100mV / Div, Time 4ms / Div, Channel Impedance 1MΩ, AC Range, 20M Bandwidth, Measure Peak-to-Peak Value;

[0064] Channel 2: Amplitude 100mA / Div, Time 4ms / Div, Channel Impedance 50Ω, DC range, 20M bandwidth, Measure peak-to-peak value.

[0065] In this embodiment, the satellite master control and the test instruments required for power quality testing are integrated. By arranging test sequences and sending commands through the master control computer, the automated testing of satellite power quality can be completed, which improves testing efficiency, reduces manual operation, reduces the uncertainty caused by manual operation, and saves labor costs. All operations are completed automatically by the system, which improves the accuracy of testing.

[0066] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications to the technical solutions of the present invention by utilizing the methods and techniques disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall fall within the protection scope of the technical solutions of the present invention.

[0067] The contents not described in detail in this specification are common knowledge to those skilled in the art.

Claims

1. An automatic satellite power quality testing system, characterized in that: The system includes a central control computer, a test computer, an oscilloscope, and a network switch. The central control computer, the test computer, and the oscilloscope are all connected to the network switch via network cables. Channel 1 and Channel 2 of the oscilloscope are connected to a voltage probe and a current probe, respectively. The oscilloscope is connected to the test point of the designated electrical connector of the satellite through the voltage probe and the current probe, respectively. The central control computer runs a preset program to arrange the test sequence of the test points and send multicast commands. The test computer runs the test program and receives multicast commands to set parameters. During the test, the central control computer sends preset power-off and power-on commands to the load equipment. After receiving these commands, the test computer sets oscilloscope parameters and acquires data. The oscilloscope acquires and interprets the peak-to-peak voltage and maximum current of the satellite. The central control computer, test computer, and oscilloscope exchange information through a network switch. The test computer is equipped with a human-computer interaction interface. Multicast command communication configuration and oscilloscope IP address configuration are both implemented through the human-computer interaction interface. The multicast command communication configuration includes the master control command multicast IP address and port number. The oscilloscope IP address configuration is used to ensure normal communication between the test computer and the master control computer, and between the test computer and the oscilloscope. The test program is used to load the configuration file corresponding to the load device power-on / off preset command and judgment conditions required in the model test task, configure the oscilloscope parameters according to the actual power-on / off preset command, and when the test program receives the load device power-on / off command, it performs the acquisition of oscilloscope voltage and current data according to the preset delay time in the load device power-on / off preset command. Data acquisition supports triggered acquisition and delayed acquisition. The test program reads the peak-to-peak voltage and peak-to-peak current values ​​of the load device after power-on and power-off and after power-on stabilization, collected by the oscilloscope. It then interprets the results according to the judgment conditions specified in the power supply design document to determine whether the current test results meet the judgment conditions specified in the power supply design document. If they do, the test is completed and the satellite power supply quality corresponding to the current load device under test is up to standard. If they do not meet the conditions, the satellite power supply quality corresponding to the current load device under test is not up to standard.

2. The automatic satellite power quality testing system according to claim 1, characterized in that: The test program checks the received load device power-off preset commands, determines the remaining unreceived load device power-off preset commands, displays the names of the received load device power-off preset commands and corresponding interpretation information in real time, and automatically generates a test report, which includes the test time and location, parameter interpretation data, waveforms and waveform names.

3. An automatic testing method implemented by the satellite power quality automatic testing system according to claim 2, characterized in that... include: An automated testing system was set up, including a central control computer, a test computer, an oscilloscope, and a network switch. The voltage and current probes of the oscilloscope were connected to the test points of the designated electrical connectors on the satellite. Run the test program on the test computer, set the multicast IP address and port number of the master control command, and achieve successful communication with the master control computer. Load the configuration file containing the power-on / off preset commands and judgment conditions required for the current satellite model test; Set the oscilloscope's IP address in the test program to achieve successful communication with the oscilloscope; The central control computer sends power-on / power-off commands to control the power supply to and from the satellite and its payload equipment. The test program configures the relevant parameters of the oscilloscope according to the power-on / power-off preset command, and waits for the acquisition to be triggered or delayed. After the oscilloscope completes data acquisition, the test program reads the test data and results for that test and saves them locally. After the test is completed, the test program generates a test report based on the test data and test results.

4. The automatic testing method according to claim 3, characterized in that: The central control computer sends different power-on / power-off preset commands and power-on / power-off commands according to different test scenarios. The test data includes voltage peak-to-peak value, current peak-to-peak value, and waveform. If it is necessary to continue testing after the current test is completed, the required power-on / power-off preset command is switched according to the test scenario.

5. The automatic testing method according to claim 4, characterized in that: During the testing process, the oscilloscope is set according to the specific test scenario. The test scenarios include the instantaneous power-on and power-off of the satellite, the instantaneous power-off of the load equipment, and the transient voltage change and leakage current characteristics of the satellite power supply after the load equipment has stabilized. Channel 1 of the oscilloscope measures the bus voltage of the satellite power supply, while channel 2 measures the leakage current between the negative line of the power supply bus and the structural ground of the entire satellite.

6. The automatic testing method according to claim 5, characterized in that: The specific tests for the transient characteristics of the bus voltage and leakage current at the moment of power failure of the satellite are as follows: Channel 1: Amplitude 10V / Div, use 10V / Div for satellite 42V bus, use 5V / Div for 28V bus, ensure complete waveform capture, time 200ms / Div, channel impedance 1MΩ, DC range, full bandwidth, measure peak-to-peak value. Channel 2: Amplitude 200mA / Div, Time 200ms / Div, Channel Impedance 50Ω, DC range, Full bandwidth, Measure peak-to-peak value; The specific tests for the transient characteristics of the bus voltage and leakage current at the moment of power failure of the load equipment are as follows: Channel 1: Amplitude 200mV / Div, Time 200ms / Div, Channel Impedance 1MΩ, AC Range, 20M Bandwidth, Measure Peak-to-Peak Value; Channel 2: Amplitude 200mA / Div, Time 200ms / Div, Channel Impedance 50Ω, DC range, Full bandwidth, Measure peak-to-peak value; The bus voltage ripple and leakage current tests after the load equipment is running stably are as follows: Channel 1: Amplitude 100mV / Div, Time 4ms / Div, Channel Impedance 1MΩ, AC Range, 20M Bandwidth, Measure Peak-to-Peak Value; Channel 2: Amplitude 100mA / Div, Time 4ms / Div, Channel Impedance 50Ω, DC range, 20M bandwidth, Measure peak-to-peak value.

7. An automatic testing method according to claim 6, characterized in that: The test program generates a test report based on the test data and test results. The test report is in Microsoft Word format and includes the test scenario and screenshots of the oscilloscope interface.

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