CN107483099A - Satellite borne equipment is isolated and safeguards system - Google Patents
Satellite borne equipment is isolated and safeguards system Download PDFInfo
- Publication number
- CN107483099A CN107483099A CN201710761153.1A CN201710761153A CN107483099A CN 107483099 A CN107483099 A CN 107483099A CN 201710761153 A CN201710761153 A CN 201710761153A CN 107483099 A CN107483099 A CN 107483099A
- Authority
- CN
- China
- Prior art keywords
- battery
- unit
- power supply
- satellite borne
- borne equipment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 27
- 238000005516 engineering process Methods 0.000 claims abstract description 16
- 238000002955 isolation Methods 0.000 claims abstract description 12
- 238000004891 communication Methods 0.000 claims abstract description 9
- 238000007599 discharging Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 8
- 230000002265 prevention Effects 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 238000005070 sampling Methods 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 4
- 230000001404 mediated effect Effects 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 abstract description 3
- 238000011105 stabilization Methods 0.000 abstract description 3
- 230000009897 systematic effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013501 data transformation Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18521—Systems of inter linked satellites, i.e. inter satellite service
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Satellite borne equipment is isolated and safeguards system, it is related to satellite borne equipment electrical isolation field on satellite, solve interrelated between existing satellite borne equipment internal electric source and Data-Link, in the presence of being readily incorporated noise jamming, and the poor reliability between communication unit, and then the problems such as being impacted to systematic function, including power supply energy transmission and control system and ZigBee wireless system for transmitting data, solar array are that power supply energy is transmitted and control system is powered；Power supply energy transmits and control system by QI wireless energy transmission technologies is satellite borne equipment distribution, satellite borne equipment is connected by ZigBee wireless data transmission technologys with spaceborne central computer, and spaceborne central computer is transmitted by CAN with power supply energy and control system communicates；In the present invention, each satellite borne equipment is a real independent unit, is not electrically connected directly between other equipment so that be completely in the state of electrical isolation each other, add the stabilization and reliability of system.
Description
Technical field
The present invention relates to satellite borne equipment electrical isolation field on satellite, and in particular to satellite borne equipment is isolated and safeguards system；
Realized by using ZigBee technology, QI wireless energy transmission technologies and power supply technology thoroughly electric between satellite borne equipment
Air bound from.
Background technology
Inside satellite carrying equipment needs power-supply system to be powered it, and this process is managed by power-supply controller of electric
With distribution, it can be seen that carrying equipment all on satellite is all interrelated on power supply from the overall path of supply line
, do not accomplish to isolate between component, be readily incorporated noise jamming, if while occur powerful device operation easily cause voltage
Fluctuation, interference etc. can impact to integral working；In the communication system of whole circuit, do not carried out between Data-Link
Isolate, potential difference is easily produced between communication unit, the unfailing performance of overall communication can be had a strong impact on.If occur in systems
Partial circuit is damaged, and easily has an impact or even cause whole system can not normal work bypass.
The content of the invention
The present invention is interrelated between existing satellite borne equipment internal electric source and Data-Link to solve, and exists to be readily incorporated and makes an uproar
Poor reliability between acoustic jamming, and communication unit, and then the problems such as impacted to systematic function, there is provided a kind of spaceborne to set
Standby isolation and safeguards system.
Satellite borne equipment is isolated and safeguards system, including power supply energy transmission and control system and ZigBee wireless data transmissions
System, solar array are that power supply energy is transmitted and control system is powered；The power supply energy transmission and control system pass through
QI wireless energy transmission technologies are satellite borne equipment distribution, the satellite borne equipment by ZigBee wireless data transmission technologys with it is spaceborne
Central computer connects, and the spaceborne central computer is transmitted by CAN with power supply energy and control system communicates；
The power supply energy transmission and control system are made up of power-supply controller of electric, and the power-supply controller of electric is to solar cell
The electric energy of battle array is allocated；The power-supply controller of electric includes shunt regulating unit, filtering power supply unit, battery discharging control list
Member, battery sampling unit, battery equalisation unit, battery charhing unit, battery Cross prevention unit, power supply slave computer
Unit and QI wireless energy transfer units；
The shunt regulating unit and filtering power supply unit are mediated and filtered to bus, make busbar voltage stable；
The power-supply controller of electric realizes the power supply of battery by controlling battery discharging unit；The battery charging
Unit and battery equalisation unit overcharge for controlling battery to occur without；Battery sampling unit is used for often being saved in battery
Battery is monitored, and battery Cross prevention unit is protected to battery；
Row data communication is entered by CAN between power supply lower computer unit and central computer, while to power supply
Data acquisition is carried out in device and switch control is carried out to QI wireless energy transfers unit according to power demands.
When solar battery array is powered, the electric energy of power-supply controller of electric is bussed supply first, and unnecessary energy is battery
Charging, when battery whole group voltage reaches voltage limiting value, remaining electric energy is shunted；At shadow region, power-supply controller of electric
Control battery to provide electric energy for satellite borne equipment, and battery is protected by battery Cross prevention unit, be simultaneously
QI wireless energy transfers unit provides stable voltage；
The QI wireless energy transfers unit obtains spaceborne set using coil by magnetic resonance principle and filter regulator circuit
Standby voltage completes distribution；The power supply of each satellite borne equipment is mutually isolated and is in separate state；
The power-supply controller of electric is communicated with spaceborne central computer by CAN, and power-supply controller of electric is according to spaceborne
The control instruction that central computer is sent is controlled QI wireless energy transfers unit accordingly.
Beneficial effects of the present invention：Satellite borne equipment isolation of the present invention and safeguards system, realize Seeds of First Post-flight equipment
Stability and whole star function reliability, prevent the electrical Interference between satellite borne equipment so that each satellite borne equipment has more
Independence and modularization.Propose with reference to ZigBee technology, QI wireless energy transmission technologies and power-supply controller of electric technology to realize
Thorough electrical isolation system between carrying equipment on star.
In whole satellite system, each satellite borne equipment is a real independent unit, between other equipment
It is not electrically connected directly so that be completely in the state of electrical isolation each other, each satellite borne equipment is in independent module
Change state, add the stabilization and reliability of system.
Brief description of the drawings
Fig. 1 is satellite borne equipment of the present invention isolation and safeguards system block diagram；
Fig. 2 is satellite borne equipment of the present invention isolation and safeguards system logical architecture schematic diagram；
Fig. 3 is satellite borne equipment of the present invention isolation and the ZigBee star network topology figures of safeguards system.
Embodiment
Embodiment one, illustrate present embodiment, satellite borne equipment isolation and safeguards system with reference to Fig. 1 to Fig. 3, including
Power supply energy transmits and control system and ZigBee wireless system for transmitting data；
Power supply energy transmits and control system is most basic part, and it is the energy source of satellite all devices.Pass through
After luminous energy is changed into electric energy by solar array, electric energy is adjusted and controlled by power-supply controller of electric, major control is by dividing
Flow adjustment unit, filtering power supply unit, sampling unit, balanced unit, battery charge protection unit, battery discharging protection list
Member and the composition such as lower computer unit, these circuits ensure that stable busbar voltage, while power-supply controller of electric is for satellite borne equipment
QI wireless energy transmission technologies are used in distribution, busbar voltage is realized that energy transmits by coil according to magnetic resonance principle, then
Reliable supply voltage is provided to satellite borne equipment by rectifying and wave-filtering and voltage regulation unit, whole system is by power-supply controller of electric come complete
Into.
Power supply energy transmits and control system task includes：
(1) bus adjustment control --- when illumination period solar cell is powered, power-supply controller of electric first meets bus power
Demand, excess energy charged a battery, and when battery whole group voltage reaches voltage limiting value, unnecessary electric current is shunted；
In shadow region, battery provides electric energy for whole star, prevents battery from occurring to put phenomenon by discharge protection circuit, is wireless energy
Amount transmission provides stable voltage；
(2) wireless energy transfer --- by using QI wireless energy transmission technologies, pass through magnetic resonance principle using coil
Voltage needed for satellite borne equipment is obtained with filter regulator circuit, completes distribution task, the power supply of each satellite borne equipment is mutually isolated
And it is in separate state.
(3) communicated with central computer --- communicated between power-supply controller of electric and central computer by CAN,
Power-supply controller of electric can be controlled wireless energy transfer accordingly according to the control instruction that central computer issues；
ZigBee wireless system for transmitting data mainly carries out networking by ZigBee technology, in satellite borne equipment and middle scheming
ZigBee control circuits are all designed with calculation machine, the data-transformation facility of on-board equipment are completed by ZigBee-network, its is main
It is to complete the spaceborne data transfer between central computer so that satellite borne equipment can complete central computer order, ensure
Satellite normal work.
Illustrate present embodiment with reference to Fig. 2, power supply energy transmission and control system are most basic parts, are whole star power supplies
Basis, it realizes the distribution of electric energy by Power converter system, its circuit mainly comprising shunt regulating unit, filtering power supply
Unit, battery discharging control unit, battery sampling unit, battery equalisation unit, battery charhing unit, battery mistake
Put the circuits such as protection location, lower computer unit, QI wireless energy transfer units.Shunt regulating unit and filtering power supply unit can be with
Bus is mediated and filtered, ensures the stability of bus.By the way that battery can be realized to the control of battery discharging unit
Function of supplying power.Battery charhing unit and battery equalisation unit ensure that battery is not in overcharge phenomenon, and battery is adopted
Sample unit in battery per batteries in real time to being monitored.Battery Cross prevention unit prevents battery discharging depth mistake
Cause to damage greatly.Above circuit has ensured the stabilization of busbar voltage, provides stable energy source for wireless energy transfer, QI without
Heat input transmission unit is designed using the principle of coil magnetic resonance, design long transmission distance, the efficiency high, and installation is simple.
Launched using TC7718FG as wireless launcher, the chip can provide up to 15W transmission power, same to use
TC7766WBG can also reach 15W as wireless receiver, its power highest.Lower computer unit is made using TMS570LS3137
For controller, TMS5703137 uses Dinuclear Systems, has a stronger reliability with ECC check function, lower computer unit with
Row data communication is entered by CAN between central computer, while to carrying out data acquisition in power-supply controller of electric and according to confession
Electric demand carries out switch control to wireless energy transfer.
ZigBee wireless system for transmitting data mainly carries out data by ZigBee module DL-LN33 Wireless Networks
Communication, each satellite borne equipment are equipped with ZigBee control circuit circuits, the main work(of ZigBee control circuits on satellite borne equipment
It can be the transmission that data are carried out between central computer.Mainly included in the topological structure of the ZigBee wireless networks of entirety
Co-ordinator (coordinator), Router (router) and End Device (terminal node), use Star topology in design
Structure, the level simple in construction are distinct.Due to only existing a Co-ordinator in whole network, so by spaceborne computer
On ZigBee module be arranged to Co-ordinator, it is as the top of the network, the ZigBee moulds of other satellite borne equipments
Block can carry out data transmission as End Device, each End Device with central computer.
Claims (2)
1. satellite borne equipment is isolated and safeguards system, including power supply energy transmission and control system and ZigBee wireless data transmissions system
System, solar array are that power supply energy is transmitted and control system is powered；
It is characterized in that；Power supply energy transmission and control system are satellite borne equipment distribution by QI wireless energy transmission technologies,
The satellite borne equipment is connected by ZigBee wireless data transmission technologys with spaceborne central computer, the spaceborne central computer
Transmitted by CAN with power supply energy and control system communicates；
The power supply energy transmission and control system are made up of power-supply controller of electric, and the power-supply controller of electric is to solar array
Electric energy is allocated；The power-supply controller of electric include shunt regulating unit, filtering power supply unit, battery discharging control unit,
Battery sampling unit, battery equalisation unit, battery charhing unit, battery Cross prevention unit, power supply slave computer list
Member and QI wireless energy transfer units；
The shunt regulating unit and filtering power supply unit are mediated and filtered to bus, make busbar voltage stable；
The power-supply controller of electric realizes the power supply of battery by controlling battery discharging unit；The battery charhing unit
Overcharged with battery equalisation unit for controlling battery to occur without；Battery sampling unit is used for every batteries in battery
It is monitored, battery Cross prevention unit is protected to battery；
Row data communication is entered by CAN between power supply lower computer unit and central computer, while in power-supply controller of electric
Carry out data acquisition and switch control is carried out to QI wireless energy transfers unit according to power demands；
When solar battery array is powered, the electric energy of power-supply controller of electric is bussed supply first, and unnecessary energy charges for battery,
When battery whole group voltage reaches voltage limiting value, remaining electric energy is shunted；At shadow region, power controller controls store
Battery provides electric energy for satellite borne equipment, and battery is protected by battery Cross prevention unit, while wireless for QI
Energy transmission unit provides stable voltage；
The QI wireless energy transfers unit obtains satellite borne equipment using coil by magnetic resonance principle and filter regulator circuit
Voltage completes distribution；The power supply of each satellite borne equipment is mutually isolated and is in separate state；
The power-supply controller of electric is communicated with spaceborne central computer by CAN, and power-supply controller of electric is according to spaceborne center
The control instruction that computer is sent is controlled QI wireless energy transfers unit accordingly.
2. satellite borne equipment according to claim 1 isolation and safeguards system, it is characterised in that satellite borne equipment and it is spaceborne in
ZigBee control circuits are set on heart computer, realized by ZigBee-network between satellite borne equipment and spaceborne central computer
Data transfer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710761153.1A CN107483099B (en) | 2017-08-30 | 2017-08-30 | Isolation and guarantee system for satellite-borne equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710761153.1A CN107483099B (en) | 2017-08-30 | 2017-08-30 | Isolation and guarantee system for satellite-borne equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107483099A true CN107483099A (en) | 2017-12-15 |
| CN107483099B CN107483099B (en) | 2020-09-01 |
Family
ID=60603913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710761153.1A Active CN107483099B (en) | 2017-08-30 | 2017-08-30 | Isolation and guarantee system for satellite-borne equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107483099B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108134436A (en) * | 2018-02-08 | 2018-06-08 | 黄君 | Spaceborne power-supply system and satellite |
| CN110034613A (en) * | 2019-04-19 | 2019-07-19 | 深圳蔚蓝无限科技有限公司 | Satellite power system and satellite |
| CN110224474A (en) * | 2019-07-12 | 2019-09-10 | 重电智能科技扬州股份有限公司 | Photovoltaic cell system, street lamp and control method based on wireless equalization discharge |
| CN113141004A (en) * | 2021-04-09 | 2021-07-20 | 长光卫星技术有限公司 | Moonlet autonomous power-on circuit and control method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101030803A (en) * | 2006-02-27 | 2007-09-05 | 中国科学院空间科学与应用研究中心 | Satellite-carried wireless data transmitter |
| CN103280877A (en) * | 2013-05-30 | 2013-09-04 | 中国科学院长春光学精密机械与物理研究所 | Space instrument power system with self-healing function |
| US20140119216A1 (en) * | 2012-10-25 | 2014-05-01 | Qualcomm Incorporated | Two-dimensional transmit power compensation |
| CN103956822A (en) * | 2014-05-22 | 2014-07-30 | 哈尔滨工业大学 | Quickly-integrated satellite power system |
| CN104516289A (en) * | 2013-09-30 | 2015-04-15 | 中国科学院空间科学与应用研究中心 | FPGA (field programmable gate array) based control device and FPGA based control method for satellite-borne microwave radiometer |
| US20150194740A1 (en) * | 2014-01-03 | 2015-07-09 | Electronics And Telecommunications Research Institute | Multi-channel mimo antenna apparatus using monopole or dipole antenna |
| CN205427196U (en) * | 2016-03-14 | 2016-08-03 | 深圳智宠家科技有限公司 | Intelligent positioner |
| CN106936491A (en) * | 2015-12-30 | 2017-07-07 | 北京空间飞行器总体设计部 | Satellite-carried wireless information system |
-
2017
- 2017-08-30 CN CN201710761153.1A patent/CN107483099B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101030803A (en) * | 2006-02-27 | 2007-09-05 | 中国科学院空间科学与应用研究中心 | Satellite-carried wireless data transmitter |
| US20140119216A1 (en) * | 2012-10-25 | 2014-05-01 | Qualcomm Incorporated | Two-dimensional transmit power compensation |
| CN103280877A (en) * | 2013-05-30 | 2013-09-04 | 中国科学院长春光学精密机械与物理研究所 | Space instrument power system with self-healing function |
| CN104516289A (en) * | 2013-09-30 | 2015-04-15 | 中国科学院空间科学与应用研究中心 | FPGA (field programmable gate array) based control device and FPGA based control method for satellite-borne microwave radiometer |
| US20150194740A1 (en) * | 2014-01-03 | 2015-07-09 | Electronics And Telecommunications Research Institute | Multi-channel mimo antenna apparatus using monopole or dipole antenna |
| CN103956822A (en) * | 2014-05-22 | 2014-07-30 | 哈尔滨工业大学 | Quickly-integrated satellite power system |
| CN106936491A (en) * | 2015-12-30 | 2017-07-07 | 北京空间飞行器总体设计部 | Satellite-carried wireless information system |
| CN205427196U (en) * | 2016-03-14 | 2016-08-03 | 深圳智宠家科技有限公司 | Intelligent positioner |
Non-Patent Citations (1)
| Title |
|---|
| 胡志兴等: "《机电安全工程》", 31 January 2016, 国防工业出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108134436A (en) * | 2018-02-08 | 2018-06-08 | 黄君 | Spaceborne power-supply system and satellite |
| CN110034613A (en) * | 2019-04-19 | 2019-07-19 | 深圳蔚蓝无限科技有限公司 | Satellite power system and satellite |
| CN110224474A (en) * | 2019-07-12 | 2019-09-10 | 重电智能科技扬州股份有限公司 | Photovoltaic cell system, street lamp and control method based on wireless equalization discharge |
| CN113141004A (en) * | 2021-04-09 | 2021-07-20 | 长光卫星技术有限公司 | Moonlet autonomous power-on circuit and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107483099B (en) | 2020-09-01 |
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Address after: No. 1299, Mingxi Road, Beihu science and Technology Development Zone, Changchun City, Jilin Province Patentee after: Changguang Satellite Technology Co.,Ltd. Address before: No.1759 Mingxi Road, Gaoxin North District, Changchun City, Jilin Province Patentee before: CHANG GUANG SATELLITE TECHNOLOGY Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Spaceborne equipment isolation and protection system Granted publication date: 20200901 Pledgee: Changchun Rural Commercial Bank Co.,Ltd. Exhibition Center sub branch Pledgor: Changguang Satellite Technology Co.,Ltd. Registration number: Y2024220000024 |