A satellite ground power supply system and method with rapid fault self-detection

Abstract

The present invention relates to a satellite ground power supply method with rapid fault self-detection, comprising: before the satellite is initially powered on, the cable station measures the load resistance R load , and output the measurement results to the host computer; if the load resistance R load Not less than the lower resistance limit R min , the host computer controls the wired station to connect the power supply channel; after the host computer controls the wired station to connect the power supply channel, the host computer sets the output curve of the power supply and sets the power supply output enable; the wired station measures the power supply channel voltage V bus The wired station measures the power supply channel temperature T ch , and output the measurement results to the host computer; the wired station monitors the output status of the wired command; when a wired command is issued, the wired station measures the wired command amplitude V com and pulse width t com The wired station measures the voltage V of the wired parameters. para And output the measurement results to the host computer.

Description

Technical Field

[0001] The invention belongs to the field of satellite ground power supply systems, and relates to a satellite ground power supply system and method with rapid fault self-detection, which is suitable for ground power supply during satellite testing. Background Art

[0002] During satellite testing, if a power supply failure occurs, it may cause the equipment to lose power or overvoltage, or even cause the equipment to burn out. Therefore, power supply safety directly affects the safety and efficiency of satellite development. With the rapid development of my country's aerospace technology, the complexity of satellites is increasing, and the number of satellites under development is increasing year by year. Faced with the continued growth of development pressure, the probability of power supply failures continues to increase, and the scope of influence of power supply failures is also increasing. Test safety issues need to be urgently addressed. Satellite ground power supply equipment with rapid fault self-detection plays an important role in the development of aerospace technology.

[0003] The satellite ground power supply system includes ground power supply, wired station and host computer. Among them, the wired station includes power supply channel board, wired instruction board and wired measurement board. During satellite testing, the satellite ground power supply equipment with rapid fault self-check can collect the status of each internal board, including board voltage, channel on / off status, temperature, output status, and realize rapid fault self-check of satellite power supply equipment. At present, the fault self-check rate of satellite ground power supply equipment is usually low, and there is still a lot of room for improvement, which is mainly reflected in the following points:

[0004] First, there is a lack of load resistance inspection before power is output. Traditional satellite ground power supply equipment generally only monitors whether the power supply voltage setting value is normal before power is output, and does not check whether the load resistance value is abnormal. For the failure mode of load short circuit, the ground power supply will enter the short circuit output mode, causing the fault to worsen.

[0005] Second, when sending ground wired commands, there is a lack of monitoring of the command board output amplitude and pulse width. Traditional satellite ground power supply equipment generally does not monitor the output amplitude and pulse width of the command board. If the wired command amplitude or pulse width is abnormal, the satellite will not execute the wired command, increasing the satellite test risk.

[0006] Therefore, a satellite ground power supply system with rapid fault self-detection is very necessary for the development of aerospace technology and improving the safety of satellite testing. Summary of the invention

[0007] In order to solve the above technical problems, the present invention provides a satellite ground power supply system with rapid fault self-checking, which includes a ground power supply, a wired station and a host computer, wherein the wired station includes a power supply channel board, a wired instruction board and a wired measurement board; the ground power supply is used to receive setting instructions from the host computer and supply power to the satellite; the wired station is used to provide a power supply channel, send wired instructions to the satellite, measure the wired parameters of the satellite, realize functional self-checking and output the self-checking results to the host computer; the host computer is used to set the output curve and enable state of the ground power supply, control the power supply channel state of the wired station, control the wired station to send wired instructions, receive the wired parameter measurement results of the wired station, and receive the self-checking results of the wired station.

[0008] The present invention also provides a satellite ground power supply method with rapid fault self-detection, comprising:

[0009] Step 1) Before the satellite is initially powered on, the cable station measures the load resistance R load , and output the measurement results to the host computer; if the load resistance R load Not less than the lower resistance limit R min , then the host computer controls the wired station to connect the power supply channel;

[0010] Step 2) After the host computer controls the wired station to connect the power supply channel, the host computer sets the output curve of the power supply and sets the power supply output enable;

[0011] Step 3) The wired station measures the power supply channel voltage V bus , power supply channel temperature T ch and the voltage V of the wired parameters para And output the measurement results to the host computer;

[0012] Step 4) The wired station monitors the output status of the wired command; when a wired command is issued, the wired station measures the wired command amplitude V com and pulse width t com And output the measurement results to the host computer;

[0013] Step 5) The host computer determines whether there is a fault in the satellite ground power supply system according to the received measurement results.

[0014] Optionally, the step 1) further includes: if the load resistance is lower than the lower resistance limit R min And higher than the load cable resistance R line , the host computer issues an alarm signal that the load resistance is too low, which is called the first fault signal; if the load resistance is not higher than the load cable resistance R line , the host computer sends out an alarm signal of load short circuit, which is called the second fault signal.

[0015] Optionally, the step 3) further includes: if the power supply channel voltage V busNot higher than the channel voltage upper limit V max1 , and not less than the channel voltage lower limit V min1 , no processing is required; if the power supply channel voltage V bus Higher than the channel voltage upper limit V max1 , the host computer generates a ground power supply overvoltage alarm signal, called the third fault signal, and the host computer controls the cable station to disconnect the power supply channel; if the power supply channel voltage V bus Lower than the bus voltage lower limit V min1 , a bus short circuit alarm signal is generated, called the fourth fault signal, and the host computer controls the cable station to disconnect the power supply channel and the satellite to disconnect the battery discharge switch.

[0016] Optionally, the step 3) further includes: the power supply channel temperature T ch Not higher than the channel temperature upper limit T max , no processing is required; if the power supply channel temperature T ch Higher than the channel voltage temperature upper limit T max , the host computer generates a ground power supply over-temperature alarm signal, called the fifth fault signal, and controls the cable station to disconnect the power supply channel and the satellite to disconnect the battery discharge switch.

[0017] Optionally, the step 4) further includes: if the command amplitude V com Not higher than the upper limit of the command amplitude V max2 , and not less than the lower limit of the command amplitude V min1 , no processing is required; if the command amplitude V com Higher than the upper limit of the command amplitude V max2 , the host computer generates a wired command amplitude too high alarm signal, called the sixth fault signal, and the host computer controls the wired station to stop sending wired commands; if the command amplitude V com Lower than the lower limit of the command amplitude V min2 , the host computer generates a wired command amplitude too low alarm signal, called the seventh fault signal; if the command pulse width t com Not higher than the upper limit of the instruction pulse width t max , and not less than the lower limit of the instruction pulse width t min , no processing is required; if the instruction pulse width t com Higher than the upper limit of the instruction pulse width t max , the host computer generates an alarm signal that the wired instruction pulse width is too large, which is called the eighth fault signal, and the host computer controls the wired station to stop sending wired instructions; if the instruction pulse width t com Lower than the lower limit of the command pulse width t min , the host computer generates an alarm signal that the wired instruction pulse width is too small, which is called the ninth fault signal.

[0018] Optionally, the step 3) further includes: if the wired parameter voltage V paraNot higher than the upper limit of wired parameter voltage V max3 , and not less than the lower limit of the wired parameter voltage V min3 , no processing is required; if the wired parameter voltage V para Higher than the upper limit of wired parameter voltage V max3 , the host computer generates a wired parameter voltage amplitude too high alarm signal, called the tenth fault signal; if the wired parameter voltage V para Lower than the lower limit of wired parameter voltage V min3 , the host computer generates a wired parameter voltage amplitude too low alarm signal, which is called the 11th fault signal.

[0019] The advantages of the present invention over the prior art are that before the satellite is initially powered on, the load resistance R is measured. load , load short-circuit faults can be detected in time before the satellite is powered on, preventing the load short-circuit from causing the ground power supply to enter a high-current short-circuit output mode; after the power output is enabled, the power supply channel voltage V is measured bus and the power supply channel temperature T ch , can detect the voltage drop and rapid temperature rise of the power supply channel caused by bus short-circuit fault, and deal with the bus short-circuit fault in time, and can also deal with the bus overvoltage fault in time to prevent the fault from spreading; it also monitors the wired command amplitude V com and pulse width t com , to prevent the satellite from not executing the command due to abnormal command amplitude or pulse width; can monitor the wired parameter V para Whether it exceeds the limit, prevent the missed judgment of satellite abnormal problems, and greatly improve the safety of spacecraft ground testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a block diagram of a satellite ground power supply system with rapid fault self-detection of the present invention.

[0021] Figure 2 The present invention is a flow chart of a satellite ground power supply method with rapid fault self-detection. DETAILED DESCRIPTION

[0022] The following is a further detailed description of a satellite ground power supply method with rapid fault self-checking proposed by the present invention in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the accompanying drawings are in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0023] Figure 1This is a block diagram of a satellite ground power supply system with rapid fault self-test. The system includes a ground power supply, a wired station and a host computer. Among them, the wired station includes a power supply channel board, a wired instruction board and a wired measurement board. The ground power supply is used to receive the setting instructions of the host computer and supply power to the satellite; the wired station is used to provide a power supply channel, send wired instructions to the satellite, measure the satellite's wired parameters, implement functional self-test and output the self-test results to the host computer; the host computer is used to set the output curve and enable status of the ground power supply, control the power supply channel status of the wired station, control the wired station to send wired instructions, receive the wired parameter measurement results of the wired station, and receive the self-test results of the wired station.

[0024] Figure 2 The present invention is a flow chart of a satellite ground power supply method with rapid fault self-checking. The present invention introduces a satellite ground power supply method with rapid fault self-checking.

[0025] The first step is to measure the load resistance R before the satellite is initially powered on. load And output the measurement results to the host computer. If the load resistance R load Not less than the lower resistance limit R min , the host computer controls the cable station to connect the power supply channel. If the load resistance is lower than the lower resistance limit R min And higher than the load cable resistance R line , the host computer issues an alarm signal that the load resistance is too low, which is called fault signal 1. If the load resistance is not higher than the load cable resistance R line , then the host computer sends out an alarm signal of load short circuit, which is called fault signal 2;

[0026] In the second step, after the host computer controls the wired station to connect the power supply channel, the host computer sets the output curve of the power supply and sets the power supply output enable;

[0027] The third step is to measure the voltage V of the power supply channel at the cable station. bus , and output the measurement results to the host computer. bus Not higher than the channel voltage upper limit V max1 , and not less than the channel voltage lower limit V min1 , no processing is required; if the power supply channel voltage V bus Higher than the channel voltage upper limit V max1 , the host computer generates a ground power supply overvoltage alarm signal, called fault signal 3, and the host computer controls the cable station to disconnect the power supply channel; if the power supply channel voltage V bus Lower than the bus voltage lower limit V min1 , a bus short circuit alarm signal is generated, called fault signal 4, and the host computer controls the cable station to disconnect the power supply channel and the satellite to disconnect the battery discharge switch;

[0028] Step 4: The wired station measures the power supply channel temperature Tch , and output the measurement results to the host computer. ch Not higher than the channel temperature upper limit T max , no processing is required; if the power supply channel temperature T ch Higher than the channel voltage temperature upper limit T max , the host computer generates a ground power supply over-temperature alarm signal, called fault signal 5, and controls the cable station to disconnect the power supply channel and the satellite to disconnect the battery discharge switch;

[0029] Step 5: The wired station monitors the output status of the wired command. When a wired command is issued, the wired station measures the command amplitude V com and pulse width t com , and output the measurement results to the host computer. com Not higher than the upper limit of the command amplitude V max2 , and not less than the lower limit of the command amplitude V min1 , no processing is required; if the command amplitude V com Higher than the upper limit of the command amplitude V max2 , the host computer generates an alarm signal that the wired command amplitude is too high, called fault signal 6, and the host computer controls the wired station to stop sending wired commands; if the command amplitude V com Lower than the lower limit of the command amplitude V min2 , the host computer generates a wired command amplitude too low alarm signal, called fault signal 7; if the command pulse width t com Not higher than the upper limit of the instruction pulse width t max , and not less than the lower limit of the instruction pulse width t min , no processing is required; if the instruction pulse width t com Higher than the upper limit of the instruction pulse width t max , the host computer generates an alarm signal that the wired instruction pulse width is too large, called fault signal 8, and the host computer controls the wired station to stop sending wired instructions; if the instruction pulse width t com Lower than the lower limit of the command pulse width t min , then the host computer generates an alarm signal that the wired instruction pulse width is too small, which is called fault signal 9;

[0030] Step 6: The cable station measures the voltage V of the cable parameters para , and output the measurement results to the host computer. If the wired parameter voltage V para Not higher than the upper limit of wired parameter voltage V max3 , and not less than the lower limit of the wired parameter voltage V min3 , no processing is required; if the wired parameter voltage V para Higher than the upper limit of wired parameter voltage V max3 , the host computer generates a wired parameter voltage amplitude too high alarm signal, called fault signal 10; if the wired parameter voltage V paraLower than the lower limit of wired parameter voltage V min3 , the host computer generates an alarm signal that the wired parameter voltage amplitude is too low, which is called fault signal 11.

[0031] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A satellite ground power supply method for realizing rapid fault self-detection, characterized in that: The satellite ground power supply system with rapid fault self-check is adopted, and the system includes a ground power supply, a wired station and a host computer, wherein the wired station includes a power supply channel board, a wired instruction board and a wired measurement board; the ground power supply is used to receive the setting instruction of the host computer and supply power to the satellite; the wired station is used to provide a power supply channel, send wired instructions to the satellite, measure the wired parameters of the satellite, realize functional self-check and output the self-check results to the host computer; the host computer is used to set the output curve and enable state of the ground power supply, control the power supply channel state of the wired station, control the wired station to send wired instructions, receive the wired parameter measurement results of the wired station, and receive the self-check results of the wired station; The satellite ground power supply method comprises: Step 1) Before the satellite is initially powered on, the cable station measures the load resistance R load , and output the measurement results to the host computer; if the load resistance R load Not less than the lower resistance limit R min , then the host computer controls the wired station to connect the power supply channel; Step 2) After the host computer controls the wired station to connect the power supply channel, the host computer sets the output curve of the power supply and sets the power supply output enable; Step 3) The wired station measures the power supply channel voltage V bus , power supply channel temperature T ch and the voltage V of the wired parameters para And output the measurement results to the host computer; Step 4) The wired station monitors the output status of the wired command; when a wired command is issued, the wired station measures the wired command amplitude V com and pulse width t com And output the measurement results to the host computer; Step 5) The host computer determines whether there is a fault in the satellite ground power supply system according to the received measurement results; The step 3) also includes: the power supply channel temperature T ch Not higher than the channel temperature upper limit T max , no processing is required; if the power supply channel temperature T ch Higher than the channel voltage temperature upper limit T max , the host computer generates a ground power supply over-temperature alarm signal, called the fifth fault signal, and controls the cable station to disconnect the power supply channel and the satellite to disconnect the battery discharge switch; The step 4) also includes: if the command amplitude V com Not higher than the upper limit of the command amplitude V max2 , and not less than the lower limit of the command amplitude V min1 , no processing is required; if the command amplitude V com Higher than the upper limit of the command amplitude V max2 , the host computer generates a wired command amplitude too high alarm signal, called the sixth fault signal, and the host computer controls the wired station to stop sending wired commands; if the command amplitude V com Lower than the lower limit of the command amplitude V min2 , the host computer generates a wired command amplitude too low alarm signal, called the seventh fault signal; if the command pulse width t com Not higher than the upper limit of the instruction pulse width t max , and not less than the lower limit of the instruction pulse width t min , no processing is required; if the instruction pulse width t com Higher than the upper limit of the instruction pulse width t max , the host computer generates an alarm signal that the wired instruction pulse width is too large, which is called the eighth fault signal, and the host computer controls the wired station to stop sending wired instructions; if the instruction pulse width t com Lower than the lower limit of the command pulse width t min , the host computer generates an alarm signal that the wired instruction pulse width is too small, which is called the ninth fault signal.

2. The method according to claim 1, characterized in that The step 1) further includes: if the load resistance is lower than the resistance lower limit R min And higher than the load cable resistance R line , the host computer issues an alarm signal that the load resistance is too low, which is called the first fault signal; if the load resistance is not higher than the load cable resistance R line , the host computer sends out an alarm signal of load short circuit, which is called the second fault signal.

3. The method according to claim 1, characterized in that The step 3) further includes: if the power supply channel voltage V bus Not higher than the channel voltage upper limit V max1 , and not less than the channel voltage lower limit V min1 , no processing is required; if the power supply channel voltage V bus Higher than the channel voltage upper limit V max1 , the host computer generates a ground power supply overvoltage alarm signal, called the third fault signal, and the host computer controls the cable station to disconnect the power supply channel; if the power supply channel voltage V bus Lower than the bus voltage lower limit V min1 , a bus short circuit alarm signal is generated, called the fourth fault signal, and the host computer controls the cable station to disconnect the power supply channel and the satellite to disconnect the battery discharge switch.

4. The method according to claim 1, characterized in that The step 3) further includes: if the wired parameter voltage V para Not higher than the upper limit of wired parameter voltage V max3 , and not less than the lower limit of the wired parameter voltage V min3 , no processing is required; if the wired parameter voltage V para Higher than the upper limit of wired parameter voltage V max3 , the host computer generates a wired parameter voltage amplitude too high alarm signal, called the tenth fault signal; if the wired parameter voltage V para Lower than the lower limit of wired parameter voltage V min3 , the host computer generates a wired parameter voltage amplitude too low alarm signal, which is called the 11th fault signal.

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