AU2016295744B2 - C/KU waveband conversion control system and communication method therefor - Google Patents
C/KU waveband conversion control system and communication method therefor Download PDFInfo
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- 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
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- 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
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18515—Transmission equipment in satellites or space-based relays
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Abstract
The present invention relates to a C/KU waveband conversion control system, mainly comprising: a positioning module, a motor drive module, a control circuit module, a display module, a detection circuit module, a CPU main control circuit module, and a power supply module. The device is a satellite communication device which realizes communication in different wavebands using the same antenna surface. The device has a simple structure, is generally designed with open source hardware, and can realize rapid switching between a C waveband and a KU waveband, thus greatly reducing the weight of two communication systems and realizing one-vehicle-multiple-systems. Communication can be performed by selecting different waveband signals in a targeted way, in different regions under different environments, thus realizing the maximization of device functions and economic benefits.
Description
C/KU WAVEBAND CONVERSION CONTROL SYSTEM AND
COMMUNICATION METHOD THEREFOR
BACKGROUND OF THE INVENTION
Field of the Invention
The present invention relates to the field of satellite communications, and in particular, to a C/KU waveband conversion control system, which is a tool that selects different feeds according to different wavebands so as to realize communication in different wavebands using the same antenna surface. The present invention further relates to a communication method using the C/KU waveband conversion system, so as to implement satellite communication in different wavebands.
Description of Related Art
With continuous development of satellite communication technologies, people have increasingly higher requirements on the quality of satellite communication. At present, a C waveband and a KU waveband are two relatively mature communication wavebands. The KU waveband has advantages of a small antenna aperture, high frequency, high efficiency, low costs, low terrestrial interference and so on. However, due to large rain attenuation which generally exceeds 20 dB, the KU waveband is applicable for communication in good weather, and is inapplicable for emergency rescue in disaster weather, thus having a rather limited application scope. The C-waveband technology is maturer, has small rain attenuation which is generally less than 1 dB, and receives small limitations on its application scope. However, due to high costs and strong co-channel interference from the ground, the C-waveband technology is unsuitable to be used in urban areas where there are many interfering signal sources.
A solution using existing technical means is preparing two communication systems to cope with communication under different weather conditions and in different regions, which has a rather high requirement on a carrier of the communication systems. An antenna surface, as an important part of a communication
2016295744 01 Feb 2019 system, weighs the heaviest in the communication system. It is rather difficult to carry two communication systems with one communication vehicle, and it is of high costs to separately carry the two communication systems with two communication vehicles. An apparatus that can receive two types of frequency bands at the same time has not yet emerged so far in China. Therefore, an apparatus for satellite communication in different frequency bands by using the same antenna surface is required.
SUMMARY OF THE INVENTION
To solve the foregoing existing problems, the present invention discloses a C/KU waveband conversion control system. The device is a satellite communication device which realizes communication in different wavebands using the same antenna surface. The device has a simple structure, is generally designed with open source hardware, and can effectively realize rapid switching between a C waveband and a KU waveband, thus greatly reducing the weight of two communication systems and realizing one-vehicle-multiple-systems. Communication can be performed by selecting different waveband signals in a targeted way, in different regions under different environments, thus realizing the maximization of device functions and economic benefits.
A C/KU waveband conversion control system mainly includes: a positioning module, a motor drive module, a control circuit module, a display module, a detection circuit module, a CPU main control circuit module, and a power supply module. The motor drive module is connected to the CPU main control circuit module through a PWM interface, the positioning module is connected to the CPU main control circuit module through an RS232 interface, the display module is connected to the CPU main control circuit module through an LCD interface, the power supply module is connected to the CPU main control circuit module, the motor drive module is connected to the CPU main control circuit module by using a driver chip, and the detection circuit module and the control circuit module are directly connected to the CPU main control circuit module. The positioning module can collect position information of the control system. The CPU main control circuit module computes optimal waveband information for an operator to select. The motor drive module controls positions of feeds by using a drive motor, so as to achieve an objective of
2016295744 01 Feb 2019 selecting different feeds for communication. The control circuit module is a main module that a user operates. The CPU main control circuit module receives operation requests from a user by using the control circuit module, and notifies the user of some system running status by using the display module, such that the user can adjust system functions in time. The detection circuit module is configured to detect a polarization angle and a horizontal angle of the system, so as to assist the CPU main control circuit module in control over the motor drive module through detection of different angles. The CPU main control circuit module is a main processing and computing module of the system, and processes input and output of all data. The power supply module supplies electric energy to other parts of the system.
Accordingly, in one aspect the present disclosure provides a C/KU waveband conversion control system, mainly comprising:
a CPU main control circuit module configured to compute optimal wave band information for an operator to select;
a positioning module connected to the CPU main control circuit module through an RS232 interface and configured to collect current position information of the control system and transfer this information to the CPU main control circuit module;
a motor drive module connected by a driver chip to the CPU main control circuit module through a PWM interface and configured to control position feeds by using a driving motor to select different feeds for communication in accordance with a drive signal from the CPU main control circuit module;
a control circuit module directly connected to the CPU main control circuit module and configured to receive input requests to select a satellite from the operator for processing by the CPU main control circuit module;
a display module connected to the CPU main control circuit module through an LCD interface and configured to notify the operator of the control system operating status and optimal waveband information;
a detection circuit module directly connected to the CPU main control circuit
2016295744 01 Feb 2019 module and configured to detect a polarization angle and a horizontal angle of the control system and transfer this information to the CPU main control circuit module;
and a power supply module connected to the CPU main control circuit module and configured to provide power to the control system.
As an improvement of the present invention, the motor drive module consists of a polarized motor drive circuit and a horizontal motor drive circuit. With such a design, the polarized electrode drive circuit obtains a polarization angle value through calculation by the detection circuit module, and the CPU main control circuit module controls, by sending a pulse signal, the motor drive circuit to enable rotation of a polarized electrode to the calculated angle. A positive value of the angle indicates clockwise rotation opposite to the antenna and a negative value of the angle indicates counterclockwise rotation opposite to the antenna. A narrow side of a feed being parallel to the ground forms a null point (that is, a horizontal polarization angle is zero degree). If a signal transmitted by a satellite is vertically polarized, the angle to which the polarized electrode rotates is adjusted by 90 degrees on the basis of the previously calculated angle. The horizontal motor drive circuit generates a pulse signal CP and a direction signal DIR by using the CPU main control circuit module, where the DIR signal controls the horizontal left-right direction of the motor, and the CP pulse signal controls the motor to rotate and enables the motor to move along a horizontal axis.
As an improvement of the present invention, the detection circuit module consists of a limit detection circuit and a polarization angle detection circuit, where the polarization angle detection circuit is formed by a polarized potentiometer. With such a design, the polarization angle detection circuit collects a minimum voltage value and a maximum voltage value by using the polarized potentiometer, and converts the voltage values into corresponding angle values, where it is specified that the angle value ranges from -90° to +90°. Afterwards, the polarization angle detection circuit determines an angle value at which the polarized electrode rotates by using the voltage values at different positions. The limit detection circuit is mainly configured to detect the current working status of different feeds, including a left-right limited state of the polarized electrode, a working limited state in the C waveband, and a
2016295744 01 Feb 2019 working limited state in the KU waveband.
As an improvement of the present invention, the control circuit module is formed by a keypad circuit, where the keypad circuit includes: up and down keys, a cancel key, a confirm key, a reset key, a C waveband key, and a KU waveband key. With such a design, users can intuitively operate and control the system.
As an improvement of the present invention, the display module consists of an LED display control circuit and an LCD screen display drive circuit, where the LED display control circuit is formed by a GPS working indicator, a C-waveband antenna working indicator, a KU-waveband antenna working indicator, and an antenna reset working indicator. With such a design, the LCD screen display drive circuit converts a 3.3V voltage signal output by the CPU main control circuit module into a 5V voltage signal, thus implementing conversion between different electric levels. The LED display control circuit can intuitively provide the working status of the system to the user, such that the user can conveniently operate the system. An LED lamp is used for display, which saves energy.
As an improvement of the present invention, a GPS/BeiDou dual-mode positioning module is used as the positioning module. Although GPS positioning is accurate and rapid, it utilizes a foreign technology and therefore has potential information security hazards. The BeiDou technology continually develops and becomes mature. A short message function of the BeiDou technology can implement transmission of short messages, which is superior to the GPS technology. By combining the GPS and BeiDou positioning technologies, the BeiDou technology is used for positioning when it can normally operate, and positioning data is sent by using the BeiDou short message function; and the GPS technology is used to assist in positioning when the BeiDou positioning is disabled, thus ensuring the speed and accuracy of positioning as well as information security.
The device is a satellite communication device which realizes communication in different wavebands using the same antenna surface. The device has a simple structure, is generally designed with open source hardware, and can effectively realize rapid switching between a C waveband and a KU waveband, thus greatly reducing the weight of two communication systems and realizing one-vehicle-multiple-systems. Communication can be performed by selecting different waveband signals in a
2016295744 01 Feb 2019 targeted way, in different regions under different environments, thus realizing the maximization of device functions and economic benefits.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a principle block diagram of the present invention; and
FIG. 2 is a processing flowchart of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
The present invention is further illustrated with reference to the accompanying drawings and specific implementations.
Embodiment 1:
It can be seen from the drawings that, a C/KU waveband conversion control system mainly includes: a positioning module, a motor drive module, a control circuit module, a display module, a detection circuit module, a CPU main control circuit module, and a power supply module. The motor drive module is connected to the CPU main control circuit module through a PWM interface, the positioning module is connected to the CPU main control circuit module through an RS232 interface, the display module is connected to the CPU main control circuit module through an LCD interface, the power supply module is connected to the CPU main control circuit module, the motor drive module is connected to the CPU main control circuit module by using a driver chip, and the detection circuit module and the control circuit module are directly connected to the CPU main control circuit module. The positioning module can collect position information of the control system. The CPU main control circuit module computes optimal waveband information for an operator to select. The motor drive module controls positions of feeds by using a drive motor, so as to achieve an objective of selecting different feeds for communication. The control circuit module is a main module that a user operates. The CPU main control circuit module receives operation requests from a user by using the control circuit module, and notifies the user of some system running status by using the display module, such that the user can adjust system functions in time. The detection circuit module is configured to detect a polarization angle and a horizontal angle of the system, so as to
2016295744 01 Feb 2019 assist the CPU main control circuit module in control over the motor drive module through detection of different angles. The CPU main control circuit module is a main processing and computing module of the system, and processes input and output of all data. The power supply module supplies electric energy to other parts of the system.
Embodiment 2:
As an improvement of the present invention, the motor drive module consists of a polarized motor drive circuit and a horizontal motor drive circuit. With such a design, the polarized electrode drive circuit obtains a polarization angle value through calculation by the detection circuit module, and the CPU main control circuit module controls, by sending a pulse signal, the motor drive circuit to enable rotation of a polarized electrode to the calculated angle. A positive value of the angle indicates clockwise rotation opposite to the antenna and a negative value of the angle indicates counterclockwise rotation opposite to the antenna. A narrow side of a feed being parallel to the ground forms a null point (that is, a horizontal polarization angle is zero degree). If a signal transmitted by a satellite is vertically polarized, the angle to which the polarized electrode rotates is adjusted by 90 degrees on the basis of the previously calculated angle. The horizontal motor drive circuit generates a pulse signal CP and a direction signal DIR by using the CPU main control circuit module, where the DIR signal controls the horizontal left-right direction of the motor, and the CP pulse signal controls the motor to rotate and enables the motor to move along a horizontal axis. Other structures and advantages are completely identical to those in Embodiment 1.
Embodiment 3:
As an improvement of the present invention, the detection circuit module consists of a limit detection circuit and a polarization angle detection circuit, where the polarization angle detection circuit is formed by a polarized potentiometer. With such a design, the polarization angle detection circuit collects a minimum voltage value and a maximum voltage value by using the polarized potentiometer, and converts the voltage values into corresponding angle values, where it is specified that the angle value ranges from -90° to +90°. Afterwards, the polarization angle detection circuit determines an angle value at which the polarized electrode rotates by using the voltage values at different positions. The limit detection circuit is mainly configured to detect the current working status of different feeds, including a left-right limited
2016295744 01 Feb 2019 state of the polarized electrode, a working limited state in the C waveband, and a working limited state in the KU waveband. Other structures and advantages are completely identical to those in Embodiment 1.
Embodiment 4:
As an improvement of the present invention, the control circuit module is formed by a keypad circuit, where the keypad circuit includes: up and down keys, a cancel key, a confirm key, a reset key, a C waveband key, and a KU waveband key. With such a design, users can intuitively operate and control the system. Other structures and advantages are completely identical to those in Embodiment 1.
Embodiment 5:
As an improvement of the present invention, the display module consists of an LED display control circuit and an LCD screen display drive circuit, where the LED display control circuit is formed by a GPS working indicator, a C-waveband antenna working indicator, a KU-waveband antenna working indicator, and an antenna reset working indicator. With such a design, the LCD screen display drive circuit converts a 3.3V voltage signal output by the CPU main control circuit module into a 5V voltage signal, thus implementing conversion between different electric levels. The LED display control circuit can intuitively provide the working status of the system to the user, such that the user can conveniently operate the system. An LED lamp is used for display, which saves energy. Other structures and advantages are completely identical to those in Embodiment 1.
Embodiment 6:
As an improvement of the present invention, a GPS/BeiDou dual-mode positioning module is used as the positioning module. Although GPS positioning is accurate and rapid, it utilizes a foreign technology and therefore has potential information security hazards. The BeiDou technology continually develops and becomes mature. A short message function of the BeiDou technology can implement transmission of short messages, which is superior to the GPS technology. By combining the GPS and BeiDou positioning technologies, the BeiDou technology is used for positioning when it can normally operate, and positioning data is sent by using the BeiDou short message function; and the GPS technology is used to assist in
2016295744 01 Feb 2019 positioning when the BeiDou positioning is disabled, thus ensuring the speed and accuracy of positioning as well as information security. Other structures and advantages are completely identical to those in Embodiment 1.
The present invention can further combine at least one of the technical features described in Embodiments 2, 3, 4, 5, 6, and 7 with Embodiment 1, to form new implementations.
A specific use process of the present invention is as follows:
(1) supplying power to the system by the power supply module;
(2) performing initialization by the CPU main control circuit module;
(3) performing initialization by hardware devices;
(4) detecting a current limited state by the detection circuit module, and displaying current limit information by the display module;
(5) reading current state position information by the positioning module, and displaying the current position information or positioning failure information by the display module;
(6) computing by the CPU main control circuit module according to position information provided by the positioning module and a used satellite, and displaying optimal waveband information by the display module;
(7) selecting a waveband by a user through the control circuit module;
(8) reading, by the CPU main control circuit module, information input by the control circuit module, converting the information into a drive signal, and transmitting the drive signal to the motor drive module;
(9) driving, by the motor drive module, different feeds in response to different wavebands;
(10) selecting a satellite by the user through the control circuit module;
(11) performing satellite communication by the user; and (12) ending the process, and resetting the system.
The technical means disclosed in the solution of the present invention is not limited thereto, and further includes technical solutions formed by any combination of
2016295744 01 Feb 2019 the foregoing technical features.
It will be understood that the term “comprise” and any of its derivatives (eg comprises, comprising) as used in this specification is to be taken to be inclusive of features to which it refers, and is not meant to exclude the presence of any additional features unless otherwise stated or implied.
The reference to any prior art in this specification is not, and should not be taken as, an acknowledgement or any form of suggestion that such prior art forms part of the common general knowledge.
Claims (7)
- What is claimed is:1. A C/KU waveband conversion control system, mainly comprising:a CPU main control circuit module configured to compute optimal wave band information for an operator to select;a positioning module connected to the CPU main control circuit module through an RS232 interface and configured to collect current position information of the control system and transfer this information to the CPU main control circuit module;a motor drive module connected by a driver chip to the CPU main control circuit module through a PWM interface and configured to control position feeds by using a driving motor to select different feeds for communication in accordance with a drive signal from the CPU main control circuit module;a control circuit module directly connected to the CPU main control circuit module and configured to receive input requests to select a satellite from the operator for processing by the CPU main control circuit module;a display module connected to the CPU main control circuit module through an LCD interface and configured to notify the operator of the control system operating status and optimal waveband information;a detection circuit module directly connected to the CPU main control circuit module and configured to detect a polarization angle and a horizontal angle of the control system and transfer this information to the CPU main control circuit module; and a power supply module connected to the CPU main control circuit module and configured to provide power to the control system.
- 2. The C/KU waveband conversion control system according to claim 1, wherein the motor drive module consists of a polarized motor drive circuit and a horizontal motor drive circuit.2016295744 01 Feb 2019
- 3. The C/KU waveband conversion control system according to claim 1 or 2, wherein the detection circuit module consists of a limit detection circuit and a polarization angle detection circuit, the polarization angle detection circuit being formed by a polarized potentiometer.
- 4. The C/KU waveband conversion control system according to any one of claims 1 to3, wherein the control circuit module is formed by a keypad circuit, the keypad circuit comprising: up and down keys, a cancel key, a confirm key, a reset key, a C waveband key, and a KU waveband key.
- 5. The C/KU waveband conversion control system according to any one of claims 1 to4, wherein the display module consists of an LED display control circuit and an LCD screen display drive circuit, the LED display control circuit being formed by a GPS working indicator, a C-waveband antenna working indicator, a KU-waveband antenna working indicator, and an antenna reset working indicator.
- 6. The C/KU waveband conversion control system according to any one of claims 1 to5, wherein a GPS/BeiDou dual-mode positioning module is used as the positioning module.
- 7. A method for satellite communication by using the C/KU waveband conversion system according to any one of claims 1 to 6, comprising the following steps: supplying power to the system by the power supply module;performing initialization by the CPU main control circuit module;performing initialization by hardware devices;detecting a current limited state by the detection circuit module, and displaying current limit information by the display module;reading current state position information by the positioning module, and displaying the current position information or positioning failure information by the display module;2016295744 01 Feb 2019 computing by the CPU main control circuit module according to position information provided by the positioning module and a used satellite, and displaying optimal waveband information by the display module;selecting a waveband by a user through the control circuit module;reading, by the CPU main control circuit module, information input by the control circuit module, converting the information into a drive signal, and transmitting the drive signal to a motor drive module;driving, by the motor drive module, different feeds in response to different wavebands;selecting a satellite by the user through the control circuit module;performing satellite communication by the user; and ending the process, and resetting the system.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510425788.5 | 2015-07-20 | ||
| CN201510425788.5A CN104993862A (en) | 2015-07-20 | 2015-07-20 | C/KU band switching control system and communication method thereof |
| PCT/CN2016/090679 WO2017012546A1 (en) | 2015-07-20 | 2016-07-20 | C/ku waveband conversion control system and communication method therefor |
Publications (2)
| Publication Number | Publication Date |
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| AU2016295744A1 AU2016295744A1 (en) | 2018-03-08 |
| AU2016295744B2 true AU2016295744B2 (en) | 2019-03-14 |
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| AU2016295744A Active AU2016295744B2 (en) | 2015-07-20 | 2016-07-20 | C/KU waveband conversion control system and communication method therefor |
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| Country | Link |
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| CN (1) | CN104993862A (en) |
| AU (1) | AU2016295744B2 (en) |
| WO (1) | WO2017012546A1 (en) |
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| CN104993862A (en) * | 2015-07-20 | 2015-10-21 | 南京中网卫星通信股份有限公司 | C/KU band switching control system and communication method thereof |
| CN108092705B (en) * | 2016-11-09 | 2024-03-29 | 南京中网卫星通信股份有限公司 | Communication-in-motion antenna monitoring device and monitoring method thereof |
| CN113552333A (en) * | 2021-06-09 | 2021-10-26 | 浙江迈克赛德医疗科技有限公司 | Bar selecting system, bar selecting device and bar selecting method based on high-speed full-automatic urine analyzer |
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| CN203883130U (en) * | 2014-06-12 | 2014-10-15 | 北京文武科技发展有限公司 | Shipborne double-waveband common antenna device |
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| JP3623704B2 (en) * | 1999-12-03 | 2005-02-23 | 株式会社デンソー | Portable GPS receiver and portable terminal |
| JP4878358B2 (en) * | 2008-06-02 | 2012-02-15 | 日本電信電話株式会社 | Optical SSB modulator |
| CN101609922A (en) * | 2009-07-13 | 2009-12-23 | 南京中网卫星通信股份有限公司 | Automatic recovery control device of a kind of on-vehicle closed-loop direct current motor and control method thereof |
| CN203551786U (en) * | 2013-11-19 | 2014-04-16 | 广州市西洛电气制造有限公司 | Intelligent handheld terminal based on Beidou satellite and interphone |
| CN203722751U (en) * | 2014-01-23 | 2014-07-16 | 浙江盛洋科技股份有限公司 | KU-waveband high frequency tuner for receiving signal of two satellites simultaneously |
| CN104135300B (en) * | 2014-08-07 | 2017-04-12 | 上海无线电设备研究所 | Ku-waveband multi-channel switching receiving device and switching receiving method |
| CN104993862A (en) * | 2015-07-20 | 2015-10-21 | 南京中网卫星通信股份有限公司 | C/KU band switching control system and communication method thereof |
| CN204795038U (en) * | 2015-07-20 | 2015-11-18 | 南京中网卫星通信股份有限公司 | CKU wave band conversion control system |
-
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- 2015-07-20 CN CN201510425788.5A patent/CN104993862A/en active Pending
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- 2016-07-20 AU AU2016295744A patent/AU2016295744B2/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203883130U (en) * | 2014-06-12 | 2014-10-15 | 北京文武科技发展有限公司 | Shipborne double-waveband common antenna device |
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| WO2017012546A1 (en) | 2017-01-26 |
| CN104993862A (en) | 2015-10-21 |
| AU2016295744A1 (en) | 2018-03-08 |
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