Power distribution circuit

Abstract

The application discloses a power distribution circuit, comprising: the output end of a star arrow state acquisition module is connected with the first control end of a power supply control module and the input end of a star computer; the star arrow state acquisition module sends a first control signal to the power supply control module and the star computer according to the star arrow separation state; the first end of the power supply control module is connected with a power supply, and the second end of the power supply control module is connected with a rear-end single machine; the acquisition end of the star computer is connected with the state end of the power supply control module, and the output end of the star computer is connected with the second control end of the power supply control module; after the star computer acquires the first control signal, the working state signal of the power supply control module is collected, and a second control signal is sent to the power supply control module according to the working state signal; the power supply control module is controlled by the first control signal or the second control signal to conduct between the first end and the second end. The power distribution circuit realizes the normal opening of the hardware and software redundancy control star arrow power distribution after the star arrow separation.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of power supply control in space technology, and in particular to a power distribution circuit. BACKGROUND

[0002] In space technology, the conventional power distribution method after the separation of a satellite and a rocket is that a satellite computer sends a command to open a corresponding power distribution switch to supply power to an external single machine.

[0003] However, in the existing power distribution method after the separation of a satellite and a rocket, the satellite computer serves as a module for sending a power distribution command, and once it is damaged (for example, due to space radiation, hardware failure, or software anomaly), the entire power distribution system will be in a paralyzed state and unable to automatically adjust or restore the power supply of the external single machine. In the space environment far from the earth, especially in the early stage after the separation of a satellite and a rocket, manual intervention to the spacecraft is almost impossible, so it is difficult to realize manual control on the ground for immediate repair.

[0004] In the existing design, there is no redundant backup mechanism for the failure of the satellite computer, which means that once the main computer fails, there is no alternative solution to immediately take over the power distribution control task. SUMMARY

[0005] The present application provides a power distribution circuit to solve the problem of the vulnerability of the single control path of the power distribution circuit after the separation of a satellite and a rocket, and improve the reliability and fault tolerance of the power distribution circuit.

[0006] The present application provides a power distribution circuit, comprising a satellite-rocket state acquisition module, a power supply control module, a satellite computer, and a rear-end single machine.

[0007] The output end of the satellite-rocket state acquisition module is connected with the first control end of the power supply control module and the input end of the satellite computer; the satellite-rocket state acquisition module is used to acquire the satellite-rocket separation state and send a first control signal to the power supply control module and the satellite computer according to the satellite-rocket separation state;

[0008] The first end of the power supply control module is connected with a power supply, and the second end of the power supply control module is connected with the rear-end single machine.

[0009] The acquisition end of the satellite computer is connected with the state end of the power supply control module, and the output end of the satellite computer is connected with the second control end of the power supply control module.

[0010] The satellite computer is used to acquire the working state signal of the power supply control module and send a second control signal to the power supply control module according to the working state signal after acquiring the first control signal.

[0011] The power supply control module is configured to control conduction between the first end and the second end according to the first control signal or the second control signal.

[0012] Optionally, the power supply control module comprises a satellite-rocket separation indication unit, a power distribution control unit and a power distribution unit.

[0013] The input end of the satellite-rocket separation indication unit is connected with the first control end of the power supply control module, and the satellite-rocket separation indication unit is configured to send a first sub-control signal to the power distribution control unit according to the first control signal.

[0014] The input end of the power distribution control unit is connected with the output end of the satellite-rocket separation indication unit, and the output end of the power distribution control unit is connected with the control end of the power distribution unit.

[0015] The power distribution control unit is configured to send a second sub-control signal to the power distribution unit according to the first sub-control signal.

[0016] The first end of the power distribution unit is connected with the first end of the power supply control module, the second end of the power distribution unit is connected with the second end of the power supply control module, and the state end of the power distribution unit is connected with the state end of the power supply control module.

[0017] The power distribution unit is configured to control conduction between the first end and the second end according to the second sub-control signal.

[0018] Optionally, the satellite-rocket state acquisition module comprises a travel switch.

[0019] The first end of the travel switch is connected with the output end of the satellite-rocket state acquisition module, and the second end of the travel switch is grounded.

[0020] When the satellite-rocket separation state is not separated, the travel switch is pressed, and when the satellite-rocket separation state is separated, the travel switch is released.

[0021] Optionally, the satellite-rocket separation indication unit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, a second capacitor, a third capacitor and a fourth capacitor.

[0022] The first end of the first resistor, the second resistor, the first capacitor and the second capacitor is connected.

[0023] The second end of the first resistor, the second resistor, the first capacitor and the second capacitor is connected with the first end of the third resistor, the fourth resistor, the third capacitor and the fourth capacitor, and is connected with the input end and the output end of the satellite-rocket separation indication unit.

[0024] The second end of the third resistor, the fourth resistor, the third capacitor and the fourth capacitor is connected and grounded.

[0025] Optionally, the power distribution control unit comprises at least one power distribution triode and at least one RC delay network.

[0026] The first end of the RC delay network is connected with the input end of the power distribution control unit, and the second end of the RC delay network is connected with the base of the power distribution triode; the collector of the power distribution triode is connected with the output end of the power distribution control unit, and the emitter of the power distribution triode is grounded.

[0027] The RC delay network is used for turning on the power distribution triode after receiving the first sub-control signal and delaying for a first time.

[0028] The star computer is used for collecting the working state signal of the power supply control module and sending a second control signal to the power supply control module according to the working state signal after obtaining a first control signal and delaying for a first time.

[0029] Optionally, the power distribution control unit comprises a fifth resistor, a sixth resistor, a fifth capacitor, a sixth capacitor, a first triode and a second triode.

[0030] The first end of the fifth resistor is connected with the first end of the sixth resistor and connected with the input end of the power distribution control unit, and the second end of the fifth resistor is connected with the first end of the fifth capacitor and the base of the first triode.

[0031] The second end of the sixth resistor is connected with the first end of the sixth capacitor and the base of the second triode.

[0032] The collector of the first triode is connected with the collector of the second triode and connected with the output end of the power distribution control unit.

[0033] The second end of the fifth capacitor, the second end of the sixth capacitor, the emitter of the first triode and the emitter of the second triode are grounded.

[0034] Optionally, the power distribution unit comprises at least one power distribution switch tube and at least one RC network.

[0035] The first end of the RC network is connected with the control end of the power distribution unit, the second end of the RC network is connected with the source of the power distribution switch tube and the first end of the power distribution unit, and the third end of the RC network is connected with the gate of the power distribution switch tube.

[0036] The drain of the power distribution switch is also connected with the second end of the power distribution unit.

[0037] Optionally, the power distribution unit comprises a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a tenth capacitor, a first switch tube and a second switch tube;

[0038] The first end of the seventh resistor is connected with the control end of the power distribution unit, and the second end of the seventh resistor is connected with the first end of the eighth resistor, the first end of the ninth resistor and the first end of the seventh capacitor;

[0039] The second end of the seventh capacitor is connected with the first end of the eighth capacitor;

[0040] The second end of the eighth capacitor is connected with the second end of the eighth resistor and the source of the first switch tube, and is connected with the first end of the power distribution unit; the second end of the ninth resistor is connected with the gate of the first switch tube; and the drain of the first switch tube is connected with the second end of the power distribution unit;

[0041] The first end of the tenth resistor is connected with the control end of the power distribution unit, and the second end of the tenth resistor is connected with the first end of the eleventh resistor, the first end of the twelfth resistor and the first end of the ninth capacitor;

[0042] The second end of the ninth capacitor is connected with the first end of the tenth capacitor;

[0043] The second end of the tenth capacitor is connected with the second end of the eleventh resistor and the source of the second switch tube, and is connected with the first end of the power distribution unit; the second end of the twelfth resistor is connected with the gate of the second switch tube; and the drain of the second switch tube is connected with the second end of the power distribution unit.

[0044] Optionally, the power distribution unit further comprises a thirteenth resistor, a fourteenth resistor and a fifteenth resistor;

[0045] The first end of the thirteenth resistor is connected with the first end of the fourteenth resistor, the drain of the first switch tube and the drain of the second switch tube; the second end of the thirteenth resistor is connected with the second end of the fourteenth resistor, the first end of the fifteenth resistor and the state end of the power distribution unit; and the second end of the fifteenth resistor is grounded.

[0046] Optionally, the star service computer comprises a sampling module and a control module;

[0047] The input end of the control module is connected with the output end of the sampling module and the input end of the star service computer, the output end of the control module is connected with the control end of the power distribution unit, and the input end of the sampling module is connected with the state end of the power distribution unit;

[0048] The sampling module is used for collecting the working state signal of the power supply control module, the control module is used for sending the second control signal to the power supply control module according to the working state signal and the first control signal, and the power supply control module controls the conduction between the first end and the second end according to the second control signal.

[0049] In the power distribution circuit, the power distribution circuit comprises a satellite-rocket state acquisition module, a power supply control module, a satellite computer and a backend single machine. The satellite-rocket state acquisition module is responsible for detecting the satellite-rocket separation state, and sending a control signal to the power supply control module and the satellite computer according to the state. After receiving the control signal, the satellite computer will further collect the working state of the power supply control module, and send an additional control signal to the power supply control module according to the information. The power supply control module controls the conduction state between the power supply and the backend single machine according to the received control signal. In the power distribution circuit provided by the embodiment of the application, the automatic control of the power distribution circuit is realized by the combination of the hardware power-on and the software power-on of the satellite-rocket state acquisition module and the satellite computer. The need for manual intervention is reduced, the response speed and accuracy of the system are improved, the normal opening of the satellite-rocket power distribution is realized after the satellite-rocket separation, the fragility problem of the single control path of the power distribution circuit after the satellite-rocket separation is solved, and the reliability and fault tolerance of the power distribution circuit are improved. BRIEF DESCRIPTION OF DRAWINGS

[0050] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0051] Figure 1 is a structural schematic diagram of a power distribution circuit provided by the embodiment of the present application;

[0052] Figure 2 is a structural schematic diagram of another power distribution circuit provided by the embodiment of the present application;

[0053] Figure 3 is a circuit diagram of a satellite-rocket separation indication unit provided by the embodiment of the present application;

[0054] Figure 4 is a circuit diagram of a power distribution control unit provided by the embodiment of the present application;

[0055] Figure 5 is a circuit diagram of a power distribution unit provided by the embodiment of the present application;

[0056] Figure 6is a structural schematic view of another power distribution circuit provided by the embodiment of the present application;

[0057] Figure 7 is a circuit diagram of a power distribution circuit provided by the embodiment of the present application. DETAILED DESCRIPTION

[0058] In order to make the personnel in the art better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by the person of ordinary skill in the art without creative labor should belong to the scope of protection of the present application.

[0059] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or a sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0060] Figure 1 is a structural schematic view of a power distribution circuit provided by the embodiment of the present application, such as Figure 1As shown, the power distribution circuit includes: a satellite-rocket state acquisition module 101, a power supply control module 102, a satellite computer 103 and a backend single machine 104; the output end of the satellite-rocket state acquisition module 101 is connected with the first control end of the power supply control module 102 and the input end of the satellite computer 103; the satellite-rocket state acquisition module 101 is used for acquiring the satellite-rocket separation state and sending a first control signal to the power supply control module 102 and the satellite computer 103 according to the satellite-rocket separation state; the first end of the power supply control module 102 is connected with a power supply, and the second end of the power supply control module 102 is connected with the backend single machine 104; the acquisition end of the satellite computer 103 is connected with the state end of the power supply control module 102, and the output end of the satellite computer 103 is connected with the second control end of the power supply control module 102; the satellite computer 103 is used for acquiring the working state signal of the power supply control module 102 after acquiring the first control signal and sending a second control signal to the power supply control module 102 according to the working state signal; the power supply control module 102 is used for controlling the conduction between the first end and the second end according to the first control signal or the second control signal.

[0061] Specifically, the satellite-rocket state acquisition module 101 is used for monitoring the satellite-rocket separation state. Optionally, the satellite-rocket state acquisition module 101 acquires the satellite-rocket separation state information through a sensor or other detection means. After the satellite-rocket state acquisition module 101 detects the satellite-rocket separation, the satellite-rocket state acquisition module 101 sends a first control signal to the power supply control module 102 and the satellite computer 103. After the satellite computer 103 receives the first control signal of the satellite-rocket state acquisition module 101, the satellite computer 103 acquires the working state signal of the power supply control module 102 and sends a second control signal to the power supply control module 102 according to the working state signal. The power supply control module 102 is connected in series between the power supply and the backend single machine 104, and the power supply control module 102 controls the conduction between the first end and the second end according to the first control signal or the second control signal to control the power-on of the backend single machine 104.

[0062] For example, after the satellite-rocket state acquisition module 101 acquires the satellite-rocket separation state, the satellite-rocket state acquisition module 101 sends a first control signal to the power supply control module 102. In the power supply control module 102, the first control signal is used to control the hardware to be turned on to connect the power supply to the back-end single machine 104 for power-on. Meanwhile, the first control signal of the satellite-rocket state acquisition module 101 is also sent to the satellite computer 103. The satellite computer 103 can determine that the satellite-rocket has been separated according to the first control signal. The satellite computer 103 collects the working state signal of the power supply control module 102 through the acquisition end to determine whether the power supply control module 102 is normally powered on by hardware. When it is determined that the hardware power-on fails, a second control signal is sent to the power supply control module 102 to control the power supply control module 102 to be powered on by software. Optionally, after the satellite computer 103 determines that the hardware power-on is performed in the power supply control module 102 according to the first control signal, the satellite computer 103 collects the working state signal of the power supply control module 102 through the acquisition end. The first preset time length is a time length set according to the characteristics of the power supply control module 102 and the back-end single machine 104. The first preset time length is greater than the time length in which the power supply control module 102 normally turns on the first end and the second end after receiving the first control signal.

[0063] The embodiment of the present application provides a power distribution circuit, which comprises a satellite-rocket state acquisition module, a power supply control module, a satellite computer and a back-end single machine. The satellite-rocket state acquisition module is responsible for detecting the satellite-rocket separation state and sending control signals to the power supply control module and the satellite computer according to the state. After receiving the control signals, the satellite computer further collects the working state of the power supply control module and sends additional control signals to the power supply control module according to the information. The power supply control module controls the turn-on state between the power supply and the back-end single machine according to the received control signals. In the power distribution circuit provided by the embodiment of the present application, the hardware power-on and the software power-on of the satellite-rocket state acquisition module and the satellite computer are combined to realize the automatic control of the power distribution circuit. The need for manual intervention is reduced, and the response speed and accuracy of the system are improved. The hardware and software redundant control of the normal opening of the satellite-rocket power distribution after the satellite-rocket separation is realized. The problem of the vulnerability of the single control path of the power distribution circuit after the satellite-rocket separation is solved, and the reliability and fault tolerance of the power distribution circuit are improved.

[0064] On the basis of the above-mentioned embodiments, Figure 2 is another structure schematic diagram of the power distribution circuit provided by the embodiment of the present application, like Figure 2As shown, the power control module 102 includes: a satellite-rocket separation indication unit 1021, a power distribution control unit 1022 and a power distribution unit 1023; the input end of the satellite-rocket separation indication unit 1021 is connected with the first control end of the power control module 102, for sending a first sub-control signal to the power distribution control unit 1022 according to the first control signal; the input end of the power distribution control unit 1022 is connected with the output end of the satellite-rocket separation indication unit 1021, and the output end of the power distribution control unit 1022 is connected with the control end of the power distribution unit 1023; the power distribution control unit 1022 sends a second sub-control signal to the power distribution unit 1023 according to the first sub-control signal; the first end of the power distribution unit 1023 is connected with the first end of the power control module 102, and the second end of the power distribution unit 1023 is connected with the second end of the power control module 102; the state end of the power distribution unit 1023 is connected with the state end of the power control module 102; and the power distribution unit 1023 controls the conduction between the first end and the second end according to the second sub-control signal.

[0065] Specifically, the input end of the satellite-rocket separation indication unit 1021 is connected with the first control end of the power control module 102, receives the first control signal from the power control module 102, and sends a first sub-control signal to the power distribution control unit 1022 according to the received first control signal. The power distribution control unit 1022 receives the first sub-control signal from the satellite-rocket separation indication unit 1021, and sends a second sub-control signal to the power distribution unit 1023 according to the signal. The power distribution unit 1023 is connected in series between the power supply and the back-end single machine 104, controls the conduction between the first end and the second end according to the second sub-control signal sent by the power distribution control unit 1022, that is, controls the power-on of the back-end single machine.

[0066] For example, when the satellite-rocket state acquisition module 101 detects the satellite-rocket separation state, the satellite-rocket state acquisition module 101 sends a first control signal to the power supply control module 102. After the satellite-rocket separation indication unit 1021 receives the first control signal, it analyzes and generates a first sub-control signal, and then sends it to the power distribution control unit 1022. After the power distribution control unit 1022 receives the first sub-control signal, it generates a second sub-control signal, and then sends it to the power distribution unit 1023. According to the received second sub-control signal, the power distribution unit 1023 controls the conduction state between the first end and the second end, thereby controlling the power-on of the backend single machine 104. At the same time, the power distribution unit 1023 feeds back the current working state information to the satellite computer 103 through its state end. The satellite computer 103 can further monitor and control the working state of the power supply control module 102 according to the working state information. Further, the conduction state of the power distribution unit 1023 is sent to the satellite computer 103 through the state end. When the satellite computer 103 judges that the power distribution unit 1023 is not normally conducting, the satellite computer 103 sends a second control signal to the power distribution unit 1023 to perform software conduction on the power distribution unit 1023.

[0067] In the power distribution circuit provided by the embodiment of the present application, the power supply control module 102 realizes accurate control of the power-on of the backend single machine through hierarchical control, and adjusts the transmission state of the power supply according to the separation state of the satellite-rocket and the instruction of the satellite computer 103.

[0068] On the basis of the above-mentioned embodiments, the satellite-rocket state acquisition module 101 comprises: a travel switch; the first end of the travel switch is connected to the output end of the satellite-rocket state acquisition module 101, and the second end of the travel switch is grounded; when the satellite-rocket separation state is not separated, the travel switch is pressed; and when the satellite-rocket separation state is separated, the travel switch is released.

[0069] Specifically, the travel switch is a switch used to detect the physical position. In this power distribution circuit, the travel switch is used to detect the separation state of the satellite-rocket. The first end of the travel switch is connected to the output end of the satellite-rocket state acquisition module 101, and the second end is grounded. When the state of the travel switch changes, a signal can be sent to other modules through the output end of the satellite-rocket state acquisition module 101.

[0070] For example, when the satellite-rocket is in the non-separated state, the travel switch is pressed. At this time, the travel switch is in the closed state, which will cause the satellite-rocket state acquisition module 101 to output a low-level signal, indicating that the satellite-rocket is not separated. When the satellite-rocket is separated, the travel switch is released. At this time, the travel switch is in the open state, and the output end of the satellite-rocket state acquisition module 101 outputs a high-level signal, indicating that the satellite-rocket has been separated.

[0071] On the basis of the above-mentioned embodiments, Figure 3is a circuit diagram of a satellite-rocket separation indication unit provided by an embodiment of the present application, as shown in Figure 3 The satellite-rocket separation indication unit 1021 includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first capacitor C1, a second capacitor C2, a third capacitor C3, and a fourth capacitor C4. The first end of the first resistor R1, the second resistor R2, the first capacitor C1, and the second capacitor C2 are connected. The second end of the first resistor R1, the second resistor R2, the first capacitor C1, and the second capacitor C2 are connected with the first end of the third resistor R3, the fourth resistor R4, the third capacitor C3, and the fourth capacitor C4, and are connected with the input end and the output end of the satellite-rocket separation indication unit 1021. The second end of the third resistor R3, the fourth resistor R4, the third capacitor C3, and the fourth capacitor C4 are connected and grounded.

[0072] Specifically, in the satellite-rocket separation indication unit 1021, the first resistor R1 and the second resistor R2 are used for voltage division or current limiting of the input signal. The third resistor R3 and the fourth resistor R4 are used to form an RC circuit with the capacitor to realize signal filtering or delay. The first capacitor C1 and the second capacitor C2 are used for decoupling or filtering of the input signal to reduce noise interference. The third capacitor C3 and the fourth capacitor C4 form an RC circuit with the resistor to smooth or delay the signal.

[0073] On the basis of the above embodiments, Figure 4 is a circuit diagram of a power distribution control unit provided by an embodiment of the present application, as shown in Figure 4As shown, the power distribution control unit 1022 comprises at least one power distribution triode 10222 and at least one RC delay network 10221; the first end of the RC delay network 10221 is connected with the input end of the power distribution control unit 1022, and the second end of the RC delay network 10221 is connected with the base of the power distribution triode 10222; the collector of the power distribution triode 10222 is connected with the output end of the power distribution control unit 1022, and the emitter of the power distribution triode 10222 is grounded; the RC delay network 10221 is used for turning on the power distribution triode 10222 after receiving the first sub-control signal and delaying for a first time; the star service computer 103 is used for collecting the working state signal of the power supply control module 102 after obtaining the first control signal and delaying for a first time, and sending the second control signal to the power supply control module 102 according to the working state signal. The power distribution control unit 1022 comprises a fifth resistor R5, a sixth resistor R6, a fifth capacitor C5, a sixth capacitor C6, a first triode Q1 and a second triode Q2; the first end of the fifth resistor R5 is connected with the first end of the sixth resistor R6 and connected with the input end of the power distribution control unit 1022, and the second end of the fifth resistor R5 is connected with the first end of the fifth capacitor C5 and the base of the first triode Q1; the second end of the sixth resistor R6 is connected with the first end of the sixth capacitor C6 and the base of the second triode Q2; the collector of the first triode Q1 is connected with the collector of the second triode Q2 and connected with the output end of the power distribution control unit 1022; the second end of the fifth capacitor C5, the second end of the sixth capacitor C6, the emitter of the first triode Q1 and the emitter of the second triode Q2 are grounded.

[0074] Specifically, the power distribution triode 10222 is an electronic switch used for controlling the turn-on and turn-off of the power distribution unit 1023. The base of the power distribution triode 10222 is connected with the second end of the RC delay network 10221, used for receiving the control signal after delay processing. The electrode is connected with the output end of the power distribution control unit 1022, used for sending the control signal to the power distribution unit 1023. The emitter of the power distribution triode 10222 is grounded, forming a common emitter circuit.

[0075] The RC delay network 10221 is composed of resistors and capacitors, used for delay processing of the input first sub-control signal. The first end of the RC delay network 10221 is connected with the input end of the power distribution control unit 1022, used for receiving the first sub-control signal from the star-rocket separation indication unit 1021. The second end is connected with the base of the power distribution triode 10222, used for sending the control signal to the power distribution triode 10222 after delay.

[0076] For example, when the satellite-rocket separation indication unit 1021 detects the satellite-rocket separation state and sends the first sub-control signal, the first sub-control signal is sent to the input end of the power distribution control unit 1022. After entering the resistance-capacitance delay network 10221, the first sub-control signal is subjected to resistance and capacitance delay processing to ensure that the subsequent operation is performed after the satellite-rocket separation state is stable, thereby avoiding misoperation. After the delay processing, the first sub-control signal reaches the base of the power distribution triode 10222, so that the triode is turned on. The power distribution control unit 1022 sends the second sub-control signal to the power distribution unit 1023. After receiving the second sub-control signal, the power distribution unit 1023 controls the conduction state between the first end and the second end of the power distribution unit 1023 according to the second sub-control signal. The power distribution circuit realizes switching of the on-off state between the power supply and the backend single machine 104 according to the satellite-rocket separation state by means of hardware.

[0077] More specifically, as shown in Figure 4 The power distribution triode 10222 is an NPN triode, and when the first sub-control signal is a high-level signal, the power distribution triode 10222 is turned on. The resistance-capacitance delay network 10221 is composed of the fifth resistor R5 and the fifth capacitor C5 (the sixth resistor R6 and the sixth capacitor C6) to realize delay turn-on of the power distribution triode 10222. The power distribution circuit provided by the embodiment of the present application realizes delay processing and switch control of the input signal, and ensures the stability and reliability of the power distribution circuit during the satellite-rocket separation process.

[0078] On the basis of the above-mentioned embodiments, Figure 5 is a circuit diagram of a power distribution unit provided by an embodiment of the present application, as shown in Figure 5 The power distribution unit 1023 includes at least one power distribution switch tube 10231 and at least one resistance-capacitance network 10232. The first end of the resistance-capacitance network 10232 is connected with the control end of the power distribution unit 1023, the second end of the resistance-capacitance network 10232 is connected with the source of the power distribution switch tube 10231 and the first end of the power distribution unit 1023, and the third end of the resistance-capacitance network 10232 is connected with the gate of the power distribution switch tube 10231. The drain of the power distribution switch is also connected with the second end of the power distribution unit 1023.

[0079] The power distribution unit 1023 comprises a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, a tenth capacitor C10, a first switch tube V1 and a second switch tube V2; a first end of the seventh resistor R7 is connected with the control end of the power distribution unit 1023, a second end of the seventh resistor R7 is connected with a first end of the eighth resistor R8, a first end of the ninth resistor R9 and a first end of the seventh capacitor C7; a second end of the seventh capacitor C7 is connected with a first end of the eighth capacitor C8; a second end of the eighth capacitor C8 is connected with a second end of the eighth resistor R8 and a source of the first switch tube V1 and is connected with the first end of the power distribution unit 1023; a second end of the ninth resistor R9 is connected with a gate of the first switch tube V1; a drain of the first switch tube V1 is connected with a second end of the power distribution unit 1023; a first end of the tenth resistor R10 is connected with the control end of the power distribution unit 1023, a second end of the tenth resistor R10 is connected with a first end of the eleventh resistor R11, a first end of the twelfth resistor R12 and a first end of the ninth capacitor C9; a second end of the ninth capacitor C9 is connected with a first end of the tenth capacitor C10; a second end of the tenth capacitor C10 is connected with a second end of the eleventh resistor R11, a source of the second switch tube V2 and the first end of the power distribution unit 1023; a second end of the twelfth resistor R12 is connected with a gate of the second switch tube V2; a drain of the second switch tube V2 is connected with the second end of the power distribution unit 1023.

[0080] The power distribution unit 1023 further comprises a thirteenth resistor R13, a fourteenth resistor R14 and a fifteenth resistor R15; a first end of the thirteenth resistor R13 is connected with a first end of the fourteenth resistor R14, a drain of the first switch tube V1 and a drain of the second switch tube V2; a second end of the thirteenth resistor R13 is connected with a second end of the fourteenth resistor R14, a first end of the fifteenth resistor R15 and is connected with the state end of the power distribution unit 1023; a second end of the fifteenth resistor R15 is grounded.

[0081] Specifically, when the power distribution control unit 1022 sends a second sub-control signal, it is sent to the control terminal of the power distribution unit 1023 and processed by the RC network 10232. The RC network 10232 filters and stabilizes the received second sub-control signal to eliminate noise and fluctuations, ensuring signal accuracy and reliability. The filtered and stabilized second sub-control signal is then sent to the gate of the power distribution switch 10231. When the gate voltage of the power distribution switch 10231 reaches or exceeds the switch's threshold voltage, the switch turns on. When the power distribution switch 10231 turns on, electrical conduction is established between the first and second terminals of the power distribution unit 1023, and power is supplied to the back-end unit 104. When the power distribution switch 10231 turns off, the circuit is disconnected, and the power supply is cut off. Through the combination of the power distribution switch 10231 and the RC network 10232, the power distribution unit 1023 achieves precise control over the conduction and disconnection of the circuit.

[0082] Among them, such as Figure 5 As shown, the distribution switch tube 10231 includes a first switch tube V1 and a second switch tube V2, which are used to control the on-off between the first end and the second end of the distribution unit 1023. The distribution switch tube 10231 (i.e., V1 and V2) controls the on-off of the circuit by turning it on or off, thereby realizing the power supply management of the back-end unit 104. The second sub-control signal in the resistor-capacitor network 10232 enters through the seventh resistor R7, passes through the filtering effect of the seventh capacitor C7 and the eighth capacitor C8, and is finally sent to the gate of the first switch tube V1 through the ninth resistor R9. Similarly, the second sub-control signal enters through the tenth resistor R10, passes through the filtering effect of the ninth capacitor C9 and the tenth capacitor C10, and is finally sent to the gate of the second switch tube V2 through the twelfth resistor R12. The function of the resistor-capacitor network 10232 is to filter and stabilize the control signal to eliminate noise and fluctuations and ensure the accuracy and reliability of the signal.

[0083] The thirteenth resistor R13, the fourteenth resistor R14, and the fifteenth resistor R15 form a sampling network that samples the drain level signal of the first switching transistor V1. The thirteenth resistor R13 and the fourteenth resistor R14 are connected in series, forming a voltage divider circuit that divides the drain level signal of the switching transistor V1 and outputs it to the status terminal of the power distribution unit 103. Furthermore, the satellite service computer 103 also samples the drain level signal of the first switching transistor V1 through the sampling terminal to detect the conduction state of the power distribution unit 103. Based on the same principle, the sampling network formed by the thirteenth resistor R13, the fourteenth resistor R14, and the fifteenth resistor R15 also samples the drain level signal of the second switching transistor V2.

[0084] Based on the above embodiments, Figure 6 FIG. 1 is a structural diagram of another power distribution circuit provided by an embodiment of the present invention.Figure 6 As shown, the star computer 103 comprises a sampling module 1031 and a control module 1032; an input end of the control module 1032 is connected with an output end of the sampling module 1031 and an input end of the star computer 103, an output end of the control module 1032 is connected with a control end of the power distribution unit 1023, and an input end of the sampling module 1031 is connected with a state end of the power distribution unit 1023; the sampling module 1031 is used for collecting a working state signal of the power control module 102, and the control module 1032 is used for sending a second control signal to the power control module 102 according to the working state signal and the first control signal; and the power control module 102 controls the conduction between the first end and the second end according to the second control signal.

[0085] Specifically, after the star-rocket separation is detected by the star-rocket state acquisition module 101, the first control signal is sent to the star computer 103 and the power control module 102. The power control module 102 is powered on according to the first control signal. The control module 1032 of the star computer 103 judges that the star-rocket is separated according to the first control signal, and the sampling module 1031 of the star computer 103 collects the working state signal of the power control module 102. The star computer 103 judges whether the hardware power-on is successful according to the working state signal of the power control module 102, that is, whether the power control module 102 is normally conducted. When the working state signal indicates that the power control module 102 is not normally conducted, the control module 1032 of the star computer 103 sends the second control signal to the power control module 102 to control the power control module 102 to conduct for the power-on of the rear-end single machine 104 in software. Optionally, after the star computer 103 receives the first control signal and delays for a first preset time length, the sampling module 1031 of the star computer 103 collects the working state signal of the power control module 102. The first preset time length is set according to the characteristics of the power control module 102 and the rear-end single machine 104, and the first preset time length is greater than the time length in which the power control module 102 normally conducts the first end and the second end after receiving the first control signal.

[0086] In the power distribution circuit provided by the embodiment of the application, in addition to that the power control module 102 conducts between the first end and the second end according to the first control signal to power on the rear-end single machine, the star computer 103 can also control the conduction of the power control module 102 according to the working state signal of the power control module 102. The power distribution circuit of the embodiment of the application realizes the redundancy protection in software and hardware control.

[0087] On the basis of each of the above embodiments, Figure 7 is a circuit diagram of a power distribution circuit provided by the embodiment of the application, like Figure 7As shown, the satellite-rocket state acquisition module 101 is a travel switch K1, a first end of the travel switch K1 is connected to an output end of the satellite-rocket state acquisition module 101, and a second end of the travel switch K1 is grounded; when the satellite-rocket separation state is not separated, the travel switch is pressed; when the satellite-rocket separation state is separated, the travel switch is released. When the satellite-rocket separation state is separated, the travel switch is released, the power distribution control unit 1022 and the satellite computer 103 receive a high-level signal, and the satellite computer 103 judges that the satellite-rocket is separated. At the same time, in the power distribution control unit 1022, after receiving the high-level signal, the high-level signal is sent to the base of the power distribution triode 10222 after being delayed by the resistance-capacitance delay network 10221, the collector and the emitter of the power distribution triode 10222 are conducted, in the power distribution unit 1023, the gate of the power distribution switch tube 10231 is grounded through the resistance-capacitance network 10232, the source and the drain of the power distribution switch tube 10231 are conducted, and then the power supply 20 and the rear-end single machine 104 are conducted, thereby realizing the hardware power-on of the rear-end single machine 104 after the satellite-rocket is separated.

[0088] When the satellite computer 103 receives the satellite-rocket separation state of the satellite-rocket state acquisition module 101 as the satellite-rocket separation, delays for a period of time, and collects the conduction state of the power distribution switch tube 10231 in the power distribution unit 1023 through the collection end. When the power distribution switch tube 10231 is not normally conducted, the output end of the satellite computer 103 sends a second control signal to the power supply control module 102. Then, the power supply control module 102 is controlled to be conducted. The software power-on of the rear-end single machine 104 after the satellite-rocket is separated is realized. The power distribution circuit in the embodiment of the application realizes the redundancy protection of the software and hardware control.

[0089] It should be understood that the various forms of flow shown above can be used to reorder, add or delete steps. For example, each step described in the present application can be executed in parallel, sequentially or in a different order, as long as the desired results of the technical solutions of the present application can be achieved, which is not limited herein.

[0090] The above specific embodiments do not constitute a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent replacement and improvement made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A power distribution circuit, characterized by, The application relates to a satellite-rocket state acquisition module, a power supply control module, a satellite computer and a backend single computer. An output end of the satellite-rocket state acquisition module is connected with a first control end of the power supply control module and an input end of the satellite computer; the satellite-rocket state acquisition module is used for acquiring a satellite-rocket separation state and sending a first control signal to the power supply control module and the satellite computer according to the satellite-rocket separation state. A first end of the power supply control module is connected with a power supply, and a second end of the power supply control module is connected with the backend single computer. A state end of the power supply control module is connected with a collection end of the satellite computer, and an output end of the satellite computer is connected with a second control end of the power supply control module. The satellite computer is used for collecting a working state signal of the power supply control module after a first control signal is acquired and sending a second control signal to the power supply control module according to the working state signal. The power supply control module is used for controlling conduction between the first end and the second end according to the first control signal or the second control signal. The power supply control module comprises a satellite-rocket separation indication unit, a power distribution control unit and a power distribution unit. An input end of the satellite-rocket separation indication unit is connected with the first control end of the power supply control module and used for sending a first sub-control signal to the power distribution control unit according to the first control signal. An input end of the power distribution control unit is connected with an output end of the satellite-rocket separation indication unit, and an output end of the power distribution control unit is connected with a control end of the power distribution unit. The power distribution control unit sends a second sub-control signal to the power distribution unit according to the first sub-control signal. A first end of the power distribution unit is connected with the first end of the power supply control module, a second end of the power distribution unit is connected with the second end of the power supply control module, and a state end of the power distribution unit is connected with the state end of the power supply control module. The power distribution unit controls conduction between the first end and the second end according to the second sub-control signal. The satellite-rocket state acquisition module comprises a travel switch.

2. The power distribution circuit of claim 1, wherein, A first end of the travel switch is connected with an output end of the satellite-rocket state acquisition module, and a second end of the travel switch is grounded. When the satellite-rocket separation state is not separated, the travel switch is pressed; when the satellite-rocket separation state is separated, the travel switch is released. The satellite-rocket separation indication unit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, a second capacitor, a third capacitor and a fourth capacitor.

3. The power distribution circuit of claim 1, wherein, First ends of the first resistor, the second resistor, the first capacitor and the second capacitor are connected. Second ends of the first resistor, the second resistor, the first capacitor and the second capacitor are connected with first ends of the third resistor, the fourth resistor, the third capacitor and the fourth capacitor and connected with an input end and an output end of the satellite-rocket separation indication unit. Second ends of the third resistor, the fourth resistor, the third capacitor and the fourth capacitor are connected and grounded. The power distribution control unit comprises at least one power distribution triode and at least one resistance-capacitance delay network.

4. The power distribution circuit of claim 1, wherein, ​ The first end of the resistance-capacitance delay network is connected with the input end of the power distribution control unit, and the second end of the resistance-capacitance delay network is connected with the base of the power distribution triode; the collector of the power distribution triode is connected with the output end of the power distribution control unit, and the emitter of the power distribution triode is grounded; The resistance-capacitance delay network is used to turn on the power distribution triode after receiving the first sub-control signal and delaying for a first time; The star service computer is used to collect the working state signal of the power supply control module and send a second control signal to the power supply control module according to the working state signal after obtaining the first control signal and delaying for a first time.

5. The power distribution circuit of claim 4, wherein, The power distribution control unit comprises a fifth resistor, a sixth resistor, a fifth capacitor, a sixth capacitor, a first triode and a second triode; The first end of the fifth resistor is connected with the first end of the sixth resistor and the input end of the power distribution control unit, and the second end of the fifth resistor is connected with the first end of the fifth capacitor and the base of the first triode; The second end of the sixth resistor is connected with the first end of the sixth capacitor and the base of the second triode; The collector of the first triode is connected with the collector of the second triode and the output end of the power distribution control unit; The second end of the fifth capacitor, the second end of the sixth capacitor, the emitter of the first triode and the emitter of the second triode are grounded.

6. The power distribution circuit of claim 1, wherein, The power distribution unit comprises at least one power distribution switch tube and at least one resistance-capacitance network; The first end of the resistance-capacitance network is connected with the control end of the power distribution unit, the second end of the resistance-capacitance network is connected with the source of the power distribution switch tube and the first end of the power distribution unit, and the third end of the resistance-capacitance network is connected with the gate of the power distribution switch tube; The drain of the power distribution switch is also connected with the second end of the power distribution unit.

7. The power distribution circuit of claim 6, wherein, The power distribution unit comprises a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a tenth capacitor, a first switch tube and a second switch tube; The first end of the seventh resistor is connected with the control end of the power distribution unit, and the second end of the seventh resistor is connected with the first end of the eighth resistor, the first end of the ninth resistor and the first end of the seventh capacitor; The second end of the seventh capacitor is connected with the first end of the eighth capacitor; The second end of the eighth capacitor is connected with the second end of the eighth resistor and the source of the first switch tube, and is also connected with the first end of the power distribution unit; the second end of the ninth resistor is connected with the gate of the first switch tube; the drain of the first switch tube is connected with the second end of the power distribution unit; The first end of the tenth resistor is connected with the control end of the power distribution unit, and the second end of the tenth resistor is connected with the first end of the eleventh resistor, the first end of the twelfth resistor and the first end of the ninth capacitor; The second end of the ninth capacitor is connected with the first end of the tenth capacitor; The second end of the tenth capacitor is connected with the second end of the eleventh resistor, the source of the second switch tube and the first end of the power distribution unit; the second end of the twelfth resistor is connected with the gate of the second switch tube; the drain of the second switch tube is connected with the second end of the power distribution unit.

8. The power distribution circuit of claim 7, wherein, The power distribution unit further comprises a thirteenth resistor, a fourteenth resistor and a fifteenth resistor. The first end of the thirteenth resistor is connected with the first end of the fourteenth resistor, the drain of the first switch tube and the drain of the second switch tube; the second end of the thirteenth resistor is connected with the second end of the fourteenth resistor, the first end of the fifteenth resistor and the state end of the power distribution unit; the second end of the fifteenth resistor is grounded.

9. The power distribution circuit of claim 1, wherein, The star computer comprises a sampling module and a control module. The input end of the control module is connected with the output end of the sampling module and the input end of the star computer, the output end of the control module is connected with the control end of the power distribution unit, and the input end of the sampling module is connected with the state end of the power distribution unit. The sampling module is used for collecting the working state signal of the power control module, the control module is used for sending the second control signal to the power control module according to the working state signal and the first control signal, and the power control module controls the conduction between the first end and the second end according to the second control signal.

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