A wireless power supply and distribution system inside and outside a satellite cabin

Abstract

The invention discloses a wireless power supply and distribution system inside and outside a satellite cabin in the technical field of satellite power supply system, comprising a power supply and distribution component arranged in the satellite cabin and a power receiving component arranged outside the satellite cabin and used for receiving power transmitted by the power supply and distribution component and converting and transmitting the power to a load. The power supply and distribution component comprises an FPGA chip, a first level conversion circuit, a second level conversion circuit, a DC relay and an AC relay. The invention adopts FPGA as a main control chip, receives power-on and power-off instructions transmitted by a satellite data management system through UART, can verify the received power-on and power-off instructions, and telemeters whether the received instructions returned to the satellite data management system are correct and the power-on and power-off states of each branch, controls the main channel DC relay and each branch AC relay to be closed or disconnected, and powers on and off each load outside the cabin. Compared with the existing power supply and distribution system, the risk of leakage caused by wired transmission passing through the cabin wall is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of satellite power supply systems, and in particular to a wireless power supply and distribution system inside and outside a satellite cabin. Background Art

[0002] The satellite power system is the core guarantee for the stable operation of the satellite, and is responsible for supplying the necessary power to various payloads (such as communication equipment, sensors, propulsion systems, etc.) and platform subsystems (such as attitude control, thermal control, data processing, etc.) on the satellite. Generally speaking, the satellite power system transmits power directly and efficiently to various payloads through cables, but when supplying and distributing power from inside the satellite cabin to outside the satellite cabin, wired energy transmission will bring some problems.

[0003] When power is supplied and distributed from inside the satellite cabin to outside the satellite cabin, the amount of cables, connectors and protective materials used will increase, thereby increasing the overall mass and occupied volume of the satellite, and further increasing the launch cost.

[0004] In addition, the sealing integrity of the satellite is critical. Wiring passing through the bulkhead can become a potential leak point, and even with advanced sealing technology, there is always a risk of small leaks, which is a fatal problem for satellites that are to operate for a long time. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] Therefore, the purpose of the present invention is to provide a wireless power supply and distribution system inside and outside the satellite cabin, which can greatly reduce the mass and volume increased by wired transmission when supplying power from inside to outside the satellite cabin, and avoid the risk of leakage caused by wired transmission through the cabin wall.

[0007] To solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0008] A wireless power supply and distribution system inside and outside a satellite cabin, comprising:

[0009] It includes a power supply and distribution component arranged in the satellite cabin and a power receiving component arranged outside the satellite cabin for receiving the power transmitted by the power supply and distribution component and converting and transmitting it to the load;

[0010] Wherein, the power supply and distribution component includes:

[0011] The FPGA chip is used to send a main path power on / off signal to the first level conversion circuit and send a branch path power on / off signal to the second level conversion circuit;

[0012] The first level conversion circuit is used to convert the voltage of the total power-on and power-off pins of the FPGA chip output pins from 3.3V to 5V, thereby controlling the closing and opening of the DC relay;

[0013] The second level conversion circuit is used to convert the voltage of the power-on and power-off pins of each branch output by the FPGA chip from 3.3V to 5V, thereby controlling the closing and opening of the first AC relay, the second AC relay, and the Nth AC relay;

[0014] A DC relay is connected to the power supply and is used to control the connection and disconnection of the power supply and the filtering and step-down conversion circuit;

[0015] The first AC relay, the second AC relay...the Nth AC relay are connected to the filtering and step-down conversion circuit and the first power transmitter, the second power transmitter...the Nth power transmitter of each branch, and are used to control the connection or disconnection of the path between the filtering and step-down conversion circuit and the first power transmitter, the second power transmitter...the Nth power transmitter of each branch.

[0016] As a preferred solution of the wireless power supply and distribution system inside and outside the satellite cabin described in the present invention, the FPGA chip includes:

[0017] The command receiving module is used to receive the power-on and power-off commands transmitted by the satellite data management system, and perform CRC check on the received power-on and power-off commands to generate a CRC check value. After receiving a frame of commands, the command and the generated CRC check value are transmitted to the command parsing module;

[0018] The instruction parsing module is used to receive a frame of instructions sent by the instruction receiving module and the generated CRC check value, and compare the CRC value contained in the received frame of instructions with the CRC check value generated by the instruction receiving module. If the received CRC value is inconsistent with the generated CRC check value, it is determined that the received instruction is wrong, and the 4-bit 1 and the error instruction are transmitted to the telemetry data return module. If the received CRC value is consistent with the generated CRC check value, the instruction is parsed, the parsed information is transmitted to the power-on and power-off modules, and the 4-bit 0 and the correct instruction are transmitted to the telemetry data return module;

[0019] The power-on and power-off module is used to receive the parsing information transmitted by the instruction parsing module, power on and off the output pins corresponding to the FPGA chip according to the parsing information, and transmit the power-on and power-off status data of each output pin to the telemetry data return module;

[0020] The telemetry data return module is used to receive the 4-bit command judgment information and instructions transmitted by the command parsing module and the power-on and power-off status data of each output pin of the FPGA transmitted by the power-on and power-off modules. After receiving the 4-bit command judgment information and instructions, it is immediately transmitted to the satellite data management system through UART. After that, the power-on and power-off status data of each output pin of the FPGA chip is transmitted to the satellite data management system through UART every 10 seconds.

[0021] As a preferred solution of the wireless power supply and distribution system inside and outside the satellite cabin described in the present invention, the filtering and step-down conversion circuit includes:

[0022] EMI filter circuit, used to filter out high-frequency components in the input DC power supply and prevent external high-frequency interference signals from entering the subsequent circuits;

[0023] DC-DC step-down circuit, used to reduce the input DC voltage;

[0024] DC-AC direct current to alternating current circuit, used to convert direct current voltage into alternating current voltage.

[0025] As a preferred solution of the wireless power supply and distribution system inside and outside the satellite cabin described in the present invention, the power receiving component includes:

[0026] The first power receiver, the second power receiver, ... the Nth power receiver, are used to convert the magnetic energy transmitted by the first power transmitter, the second power transmitter, ... the Nth power transmitter into electrical energy, and transmit the generated AC voltage to the first AC-DC AC-DC converter circuit, the second AC-DC AC-DC converter circuit, ... the Nth AC-DC AC-DC converter circuit;

[0027] The first AC-DC circuit, the second AC-DC circuit...the Nth AC-DC circuit are used to convert the received AC voltage into a DC voltage and filter out the AC component in the DC voltage, and finally supply it to the external loads.

[0028] Compared with the prior art, the present invention has the following beneficial effects: the present invention adopts FPGA as the main control chip, receives the power-on and power-off instructions transmitted by the satellite data management system through UART, can verify the received power-on and power-off instructions, and telemeters and returns to the satellite data management system whether the received instructions are correct and the power-on and power-off status of each branch, controls the main channel DC relay and each branch AC relay to close or disconnect, and then powers on and off each load outside the cabin. Compared with the existing satellite cabin power supply and distribution system from inside to outside the cabin, the present invention reduces the mass and volume increased by wired transmission when supplying and distributing power from inside the satellite cabin to outside the satellite cabin, and avoids the risk of leakage caused by wired transmission through the cabin wall. In addition, the present invention adopts FPGA chip to design error detection and telemetry data return mechanism, which improves the overall reliability of the present invention, i.e., a wireless power supply and distribution electronic system inside and outside the satellite cabin. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below in combination with the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0030] Figure 1 This is a block diagram of a wireless power supply and distribution system inside and outside a satellite cabin of the present invention;

[0031] Figure 2 This is a block diagram of the internal modules of an FPGA chip of a wireless power supply and distribution system inside and outside a satellite cabin of the present invention;

[0032] Among them, 100, power supply and distribution component, 110, FPGA chip, 110a, instruction receiving module, 110b, instruction parsing module, 110c, power on and off module, 110d, telemetry data return module, 120, first level conversion circuit, 130, second level conversion circuit, 140, DC relay, 150-1, first AC relay, 150-2, second AC relay, 150-N, Nth AC relay, 160, filtering and buck conversion circuit, 160a, EMI filtering circuit, 160b, DC-DC buck circuit, 160c, DC-AC direct current to alternating current circuit, 170-1, first power transmitter, 170-2, second power transmitter, 170-N, Nth power transmitter;

[0033] 200, power receiving component, 210-1, first power receiver, 210-2, second power receiver, 210-N, Nth power transmitter, 220-1, first AC-DC converter circuit, 220-2, second AC-DC converter circuit, 220-N, Nth AC-DC converter circuit. DETAILED DESCRIPTION

[0034] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] The present invention provides a wireless power supply and distribution system inside and outside a satellite cabin, which can greatly reduce the mass and volume increased by wired transmission when supplying and distributing power from inside the satellite cabin to outside the satellite cabin, and avoids the risk of leakage caused by wired transmission passing through the cabin wall.

[0036] Figure 1-Figure 2 The structure diagram of a wireless power supply and distribution system for inside and outside a satellite cabin according to the present invention is shown. Figure 1-Figure 2 In this embodiment, a wireless power supply and distribution system inside and outside a satellite cabin specifically includes a power supply and distribution component 100 arranged inside the satellite cabin and a power receiving component 200 arranged outside the satellite cabin for receiving power transmitted by the power supply and distribution component 100 and converting and transmitting it to a load.

[0037] The power supply and distribution component 100 includes an FPGA chip 110 , a first level conversion circuit 120 , a second level conversion circuit 130 , a DC relay 140 , an AC relay 150 , a filtering and step-down conversion circuit 160 and a power transmitter 170 .

[0038] The FPGA chip 110 is used to send a main path power on / off signal to the first level conversion circuit 120 and send a branch path power on / off signal to the second level conversion circuit 130;

[0039] The first level conversion circuit 120 is used to convert the voltage of the total power-on and power-off pins of the output pins of the FPGA chip 110 from 3.3V to 5V, thereby controlling the closing and opening of the DC relay 140;

[0040] The second level conversion circuit 130 is used to convert the voltage of the power-on and power-off pins of each branch output by the FPGA chip 110 from 3.3V to 5V, thereby controlling the closing and opening of the first AC relay 150-1, the second AC relay 150-2, ... the Nth AC relay 150-N;

[0041] The DC relay 140 is connected to the power supply and is used to control the connection and disconnection between the power supply and the filter buck conversion circuit 160;

[0042] The first AC relay 150-1, the second AC relay 150-2, ... the Nth AC relay 150-N are connected to the filtering and step-down conversion circuit 160 and the first power transmitter 170-1, the second power transmitter 170-2, ... the Nth power transmitter 170-N of each branch, and are used to control the connection or disconnection of the path between the filtering and step-down conversion circuit 160 and the first power transmitter 170-1, the second power transmitter 170-2, ... the Nth power transmitter 170-N of each branch.

[0043] The FPGA chip 110 includes an instruction receiving module 110a, an instruction parsing module 110b, a power-on / power-off module 110c and a telemetry data returning module 110d.

[0044] The instruction receiving module 110a is used to receive the power-on and power-off instructions transmitted by the satellite data management system, and perform CRC check on the received power-on and power-off instructions to generate a CRC check value. After receiving a frame of instructions, the instruction and the generated CRC check value are transmitted to the instruction parsing module 110b;

[0045] The instruction parsing module 110b is used to receive a frame of instructions sent by the instruction receiving module and the generated CRC check value, and compare the CRC value contained in the received frame of instructions with the CRC check value generated by the instruction receiving module. If the received CRC value is inconsistent with the generated CRC check value, it is determined that the received instruction is wrong, and the 4-bit 1 and the error instruction are transmitted to the telemetry data return module 110d. If the received CRC value is consistent with the generated CRC check value, the instruction is parsed, the parsed information is transmitted to the power-on / power-off module 110c, and the 4-bit 0 and the correct instruction are transmitted to the telemetry data return module 110d.

[0046] The power-on / power-off module 110c is used to receive the parsing information transmitted by the instruction parsing module 110b, power on / off the output pins corresponding to the FPGA chip 110 according to the parsing information, and transmit the power-on / power-off status data of each output pin to the telemetry data return module 110d;

[0047] The telemetry data return module 110d is used to receive the 4-bit instruction judgment information and instructions transmitted by the instruction parsing module 110b and the power-on and power-off status data of each output pin of the FPGA transmitted by the power-on and power-off module 110c. After receiving the 4-bit instruction judgment information and instructions, it is immediately transmitted to the satellite data management system via UART. Thereafter, the power-on and power-off status data of each output pin of the FPGA chip 110 is transmitted to the satellite data management system via UART every 10 seconds.

[0048] The filtering and step-down conversion circuit 160 includes an EMI filtering circuit 160a, a DC-DC step-down circuit 160b and a DC-AC direct current to alternating current circuit 160c. The EMI filtering circuit 160a is used to filter out high-frequency components in the input DC power supply to prevent external high-frequency interference signals from entering subsequent circuits. The DC-DC step-down circuit 160b is used to reduce the input DC voltage. The DC-AC direct current to alternating current circuit 160c is used to convert the DC voltage into an alternating current voltage.

[0049] The power receiving component 200 includes a first power receiver 210-1, a second power receiver 210-2, ... an Nth power receiver 210-N and a first AC-DC alternating current to direct current circuit 220-1, a second AC-DC alternating current to direct current circuit 220-2, ... an Nth AC-DC alternating current to direct current circuit 220-N. The first power receiver 210-1, the second power receiver 210-2, ... an Nth power receiver 210-N are used to convert the received magnetic energy transmitted by the first power transmitter 170-1, the second power transmitter 170-2, ... an Nth power transmitter 170-N into electrical energy, and transmit the generated AC voltage to the first AC-DC alternating current to direct current circuit 220-1, the second AC-DC alternating current to direct current circuit 220-2, ... an Nth AC-DC alternating current to direct current circuit 220-N. The AC-DC circuit 220-N, the first AC-DC circuit 220-1, the second AC-DC circuit 220-2...the third AC-DC circuit 220-N are used to convert the received AC voltage into a DC voltage and filter out the AC component in the DC voltage, and finally supply it to the external loads.

[0050] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A wireless power supply and distribution system inside and outside a satellite cabin, characterized in that: include: It comprises a power supply and distribution component (100) arranged in the satellite cabin, and a power receiving component (200) arranged outside the satellite cabin and used for receiving power transmitted by the power supply and distribution component (100) and converting and transmitting the power to a load; Wherein, the power supply and distribution component (100) comprises: The FPGA chip (110) is used to send a main path power on / off signal to the first level conversion circuit (120) and to send a branch path power on / off signal to the second level conversion circuit (130); A first level conversion circuit (120) is used to convert the voltage of the total power-on and power-off pins of the output pins of the FPGA chip (110) from 3.3V to 5V, thereby controlling the closing and opening of the DC relay (140); A second level conversion circuit (130) is used to convert the voltage of the power-on and power-off pins of each branch output by the FPGA chip (110) from 3.3V to 5V, thereby controlling the closing and opening of the first AC relay (150-1), the second AC relay (150-2), and so on, the Nth AC relay (150-N); A DC relay (140) is connected to the power supply and is used to control the connection and disconnection between the power supply and the filtering and step-down conversion circuit (160); The first AC relay (150-1), the second AC relay (150-2)...the Nth AC relay (150-N) are connected to the filtering and step-down conversion circuit (160) and the first power transmitter (170-1), the second power transmitter (170-2)...the Nth power transmitter (170-N) of each branch, and are used to control the connection or disconnection of the path between the filtering and step-down conversion circuit (160) and the first power transmitter (170-1), the second power transmitter (170-2)...the Nth power transmitter (170-N) of each branch; The FPGA chip (110) comprises: The command receiving module (110a) is used to receive the power-on and power-off commands transmitted by the satellite data management system, and to perform CRC check on the received power-on and power-off commands to generate a CRC check value, and after receiving a frame of commands, transmit the command and the generated CRC check value to the command parsing module (110b); The instruction parsing module (110b) is used to receive a frame of instructions sent by the instruction receiving module and the generated CRC check value, and compare the CRC value contained in the received frame of instructions with the CRC check value generated by the instruction receiving module. If the received CRC value is inconsistent with the generated CRC check value, it is determined that the received instruction is wrong, and the 4-bit 1 and the error instruction are transmitted to the telemetry data return module (110d). If the received CRC value is consistent with the generated CRC check value, the instruction is parsed, the parsed information is transmitted to the power-on / power-off module (110c), and the 4-bit 0 and the correct instruction are transmitted to the telemetry data return module (110d); A power-on / power-off module (110c) is used to receive parsing information transmitted by the instruction parsing module (110b), to power on / off the output pins corresponding to the FPGA chip (110) according to the parsing information, and to transmit the power-on / power-off status data of each output pin to the telemetry data return module (110d); The telemetry data return module (110d) is used to receive the 4-bit instruction judgment information and instructions transmitted by the instruction parsing module (110b) and receive the power-on and power-off status data of each output pin of the FPGA transmitted by the power-on and power-off module (110c). When the 4-bit instruction judgment information and instructions are received, they are immediately transmitted to the satellite data management system via UART, and then the power-on and power-off status data of each output pin of the FPGA chip (110) are transmitted to the satellite data management system via UART every 10 seconds.

2. A wireless power supply and distribution system inside and outside a satellite cabin according to claim 1, characterized in that: The filtering and step-down conversion circuit (160) comprises: An EMI filter circuit (160a) is used to filter out high-frequency components in an input DC power supply to prevent external high-frequency interference signals from entering subsequent circuits; A DC-DC step-down circuit (160b), used for reducing an input DC voltage; The DC-AC direct current to alternating current circuit (160c) is used to convert a direct current voltage into an alternating current voltage.

3. A wireless power supply and distribution system inside and outside a satellite cabin according to claim 1, characterized in that: The power receiving component (200) comprises: The first power receiver (210-1), the second power receiver (210-2)...the Nth power receiver (210-N) are used to convert the magnetic energy transmitted by the first power transmitter (170-1), the second power transmitter (170-2)...the Nth power transmitter (170-N) into electrical energy, and transmit the generated AC voltage to the first AC-DC converter circuit (220-1), the second AC-DC converter circuit (220-2)...the Nth AC-DC converter circuit (220-N); The first AC-DC circuit (220-1), the second AC-DC circuit (220-2) ... the NAC-DC circuit (220-N) are used to convert the received AC voltage into a DC voltage and filter out the AC component in the DC voltage, and finally supply the voltage to the load outside the cabin.

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