CN204557219U - Simple and easy satellite-finding device - Google Patents
Simple and easy satellite-finding device Download PDFInfo
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- CN204557219U CN204557219U CN201520209582.4U CN201520209582U CN204557219U CN 204557219 U CN204557219 U CN 204557219U CN 201520209582 U CN201520209582 U CN 201520209582U CN 204557219 U CN204557219 U CN 204557219U
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Abstract
The utility model discloses a kind of simple and easy satellite-finding device, comprise microcontroller, tuner, detuner, display screen, Inertial Measurement Unit and antenna control module, the signal output part of the external satellite antenna tuner of input end of tuner, controls the control signal output terminal of termination microcontroller; Export termination tuner; The control signal output terminal of the control termination microcontroller of detuner, exports termination microcontroller; The output termination microcontroller of Inertial Measurement Unit; The control signal output terminal of the control signal input termination microcontroller of antenna control module, the control signal input end of the selector switch of the external satellite antenna tuner of control signal output terminal.The utility model, compared with traditional star finder, adds Inertial Measurement Unit, can measure the orientation of antenna, and pitching and polarization attitude, according to the attitude of the antenna measured, indicating user carries out correct operation, thus reaches the object fast to star.
Description
[technical field]
The utility model relates to satellite communication, particularly relates to a kind of simple and easy satellite-finding device.
[background technology]
What is called is sought star and is in fact referred to by adjusting the position angle of antenna, the angle of pitch and polarizing angle, and antenna beam center is aimed at the mark the process of satellite.Antenna only has the satellite that aims at the mark exactly, and guarantee is received television program clearly, or ensures carrying out smoothly of satellite communication.
TVRO television receive-only or the many employings in other DV simple and easy satellite-finding device data receiver small station are voluntarily to star mode.By adjustment antenna, make signal intensity that satellite digital tv receiver or receiving card show and signal quality numerical value maximum.
The concrete operation step seeking star is as follows:
1) under antenna, local longitude and latitude data (or utilizing nearest metropolitan related data) are surveyed with GPS;
2) position angle AZ, elevation angle EL and the polarizing angle POL (theoretical value) of local antenna alignment target satellite is calculated; This result also can be found by the subsidiary instructions of network or television antenna producer.
3) utilize the elevation angle graduation apparatus of antenna installation stent, or antenna elevation angle is adjusted to theoretical value by geologic compass (or inclinator);
4) connect LNB and receiver/star finder, adjust to the polarised direction (coarse adjustment) of requirement;
5) known TV programme or data broadcasting signal on select target satellite, the centre frequency of receiver/receiving card, symbol rate, forward error correction rate are set to the parameter of known signal by user;
6) utilize the directional information of compass, adjustment antenna direction is to destination party parallactic angle, then fine tuning antenna bearingt, locking Received signal strength, and the signal intensity received that receiver/star finder is shown is the strongest, signal quality is best;
7) fixed antenna position angle, the angle of pitch and polarizing angle, complete to star.
Along with the widespread use of satellite in communication and television signal transmission, have and facilitate user to search the various star finder equipment of star to star also to continue to bring out out.Star finder in the market is also undertaken star by above-mentioned operation steps, majority be for satellite television to star.Star finder function on market has: digital television receiver function+LCD display+battery, serves the effect of saving and carrying heavy receiver+TV.Some star finder also add GPS function, and this star finder can at screen display the object angle of pitch, position angle and polarizing angle.Some star finder, in order to cost-saving, have employed screen, does not have TV signal Presentation Function, can only show relevant signal quality and signal intensity.
Such as, application number a kind of digital star identifier that has been the disclosure of the invention of CN201410418623.0, comprising: a high-frequency tuner, and it is for receiving and processing the radiofrequency signal of satellite antenna transmission; One detuner, it is connected with high-frequency tuner by bus, for carrying out demodulation to received signal; Automatic gain control circuit is connected with between high-frequency tuner and detuner; One micro-control unit, it connects detuner by bus, controls detuner and high-frequency tuner; One display screen, it is connected with micro-control unit, for display parameter information under micro-control unit controls; One input keyboard or touch-screen, it is connected with micro-control unit; One programmable read only memory, it is connected with micro-control unit, for storing satellite parameter information and system parameter message.
The weak point of tradition star finder is: require that operator has outstanding direction feeling, can regulate orientation, pitching and polarisation angles simultaneously fine and smoothly, just have signal to occur when these three angles all reach near right value.This adds increased the difficulty of operation, consume the time, for without any the user to star experience, direction feeling difference, difficulty more so, greatly reduces star efficiency.
[summary of the invention]
The technical problems to be solved in the utility model be to provide a kind of operate intuitively easy, accuracy is high, seek the high simple and easy satellite-finding device of star efficiency.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is, a kind of simple and easy satellite-finding device, comprise microcontroller, tuner, detuner, display screen, Inertial Measurement Unit and antenna control module, the signal output part of the external satellite antenna tuner of input end of tuner, controls the control signal output terminal of termination microcontroller; Export termination tuner; The control signal output terminal of the control termination microcontroller of detuner, exports termination microcontroller; The output termination microcontroller of Inertial Measurement Unit; The control signal output terminal of the control signal input termination microcontroller of antenna control module, the control signal input end of the selector switch of the external satellite antenna tuner of control signal output terminal.
Above-described simple and easy satellite-finding device, comprises global positioning module, the output termination microcontroller of global positioning module.
Above-described simple and easy satellite-finding device, comprises keyboard.The output termination microcontroller of keyboard.
Above-described simple and easy satellite-finding device, Inertial Measurement Unit is arranged on the antenna of satellite antenna, to obtain pitch angle and the position angle of antenna.
Simple and easy satellite-finding device of the present utility model, compared with traditional star finder, adds Inertial Measurement Unit, can measure the orientation of antenna, pitching and polarization attitude, according to the attitude of the antenna measured, indicating user carries out correct operation, thus reaches the object fast to star.
[accompanying drawing explanation]
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the theory diagram of the simple and easy satellite-finding device of the utility model embodiment.
[embodiment]
The structure of the simple and easy satellite-finding device of the utility model embodiment and principle are as shown in Figure 1, comprise microcontroller, tuner TUNER, detuner DEMO, antenna control module Di seqc, Inertial Measurement Unit IMU, GPS module, keyboard and display screen LCD, each functions of modules is as described below:
The tuner LNB of satellite antenna: to frequency conversion and the low noise amplification of satellite-signal.The KU wave band that input antenna receives or C-band satellite-signal, the control signals such as 13V/18V and the 0K/22K selector switch also having Diseqc to send over, export the L-band signal of 950M-2150M, and signal intensity are enlarged into-65dBm--25dBm.
Tuner TUNER: as TV tuner, selectively carries out filtering reception by L-band signal, and does suitable amplification, is the signal conversion front end supporting the digital satellite television standards such as DVB-S, DVB-S2, ABS-S, MMDS.The input LNB L-band signal of coming, and the selection information such as the satellite repeater that sends over of MCU, export through Choose filtering and the narrow bandwidth intermediate-freuqncy signal after amplifying, be generally the bandwidth of a transponder.
The function of detuner DEMO:DEMO is the signal being issued by satellite is modulation signal, and former baseband signal is made in demodulation.The input TUNER L-band narrowband intermediate frequency modulation signal of coming, and the satellite repeater parameter information that MCU sends over, export the demodulation out former baseband signal play of decodable code, and by its signal intensity and quality feedback to MCU.
Inertial Measurement Unit IMU:IMU comprises three axle electronic compass and three axis accelerometers, and function is the attitude information providing star finder in real time, i.e. position angle, the angle of pitch and polarizing angle etc.Real-time for star finder after acquisition and processing attitude information is sent to MCU by IMU, when adjusting star to make attitude information change to azimuth of target, the angle of pitch, polarizing angle, just achieves aligning.
Antenna control module Diseqc: control with digital satellite television receiver, send steering order to relevant device, as change-over switch, switch, antenna driving apparatus, LNB etc.; As exported the satellite-signal of left-handed/dextrorotation, vertical/horizontal polarization by 13V/18V change-over switch control LNB, also selected by the local oscillator of the two local oscillator LNB of 0/22K switch control rule.The user control command that input MCU sends over, exports to the control signal of 13V/18V and the 0K/22K selector switch of LNB.
GPS module: function is for providing the geographical latitude and longitude information of star finder equipment in real time.GPS module is by the geographical location information of the frequency collection equipment of about 4Hz, and sending to MCU to carry out subsequent solves and algorithm process by serial ports the geographic position data meeting NMEA0183 agreement obtained, the longitude of joint objective satellite can obtain information such as the azimuth of target needed for star, the angle of pitch and polarizing angles.As previously mentioned, this module can be cast out.
Display screen: as human-computer interaction interface carrier, display screen can easyly instruct user to use this product intuitively.Display screen is made up of driving chip and LCD screen, receives the control command display information of MCU to user.Display screen can see the FSTN type black and white LCD screen of screen clearly under adopting sunlight.
Keyboard: as input equipment, keypad function is to make user carry out function selection by the wish of oneself, selects and arranges satellite, watching the TV programme etc. oneself liked.User sends order by keyboard to MCU, and MCU takes orders and controls other module completing user demands.
Microcontroller: MCU is as main control unit, and be the core of star finder, its Main Function has:
1. as operation control and storage unit, the various peripheral hardware of initialization, is communicated with IMU with tuner, detuner by I2C bus mode, is connected by spi bus with display, communicated by serial ports with GPS, connects keyboard by GPIO mouth.
2. configure satellite data, satellite repeater parameter configuration in detuner and tuner, read signal quality and intensity, the parameters such as the bit error rate, thus judge whether satelloid.
3. read IMU data, IMU unit is the combination of three axle electromagnetic compass, three axis accelerometer, three-axis gyroscope.The party's ratio juris is: star finder is fixed on (or on feed of rear feed type antenna pot) on plate aerial by modes such as absorption, placement parallel with aerial panel, the initial attitude of antenna can be obtained by earth magnetism compass and accelerometer, comprise pitch angle and position angle.
4. read the data that GPS module is passed back, or the geographical longitude and latitude data that user is arranged, solve latitude and longitude information, hybrid satellite longitude information can calculate azimuth of target, the angle of pitch, the polarizing angle aimed at needed for this satellite, deduct and read from IMU the initial attitude angle calculated after data, the angle difference of gained is exactly antenna to the angle adjusted required for star.
5. can carry out function selection by keyboard, select and satellite is set, Diseqc, LNB parameter etc.
6. be presented at the essential information in various feature operation by display screen, also show user and adjusting the essential information in star process, and show the information instructing user how to operate.
External interface:
1.F head interface, for connecting tuner;
2. serial ports, for connecting satellite beacon set;
3.AGC adopts interface, for connecting satellite beacon set.
Software architecture:
The design of this product software comprises as lower part:
1. electromagnetic compass driver.MCU is transferred to after the star finder azimuth information process collected by IMU in real time.
2. accelerometer driver.MCU is passed to after the star finder obliquity information process collected by IMU in real time.
3. tuner driver.MCU configures transponder parameter command to tuner, drives tuner to carry out Choose filtering to the signal that LNB comes, obtains the data-signal on corresponding transponder.
4. detuner driver.MCU configures transponder parameter command to detuner, and the signal on the corresponding transponder driving detuner to come to TUNER carries out rectification.
5.GPS driver.Resolve GPS and gather the NMEA0183 protocol data that sends over to MCU.
6. keyboard driver.User's pushbutton signal is passed to MCU, completes corresponding function.
7. display screen driver.Driving chip receives MCU signal and drives LCD screen to show corresponding information.
8. display screen UI designs.The i.e. software code of display screen display interface content.
9. master routine framework.The i.e. software architecture of the logical process of the whole ergasia realization of star finder.
Module in star finder of the present utility model, is the situation of the overall application described, according to different applicable cases, can carries out suitable choice, thus reach reduction product size, the object reduced costs, such as:
1 local longitude and latitude can pass through input through keyboard, also can remove, and facilitates a large amount of only movable within local 200 kilometers users.
In 2IMU, there are three axle digital compass, three axial rake instrument, three-axis gyroscope.Compass can provide the sensing azimuth information of star finder in real time, is transferred to target azimuth as long as adjust during star; Inclinator can provide the attitude informations such as the pitch tilt degree of star finder; Gyroscope then can provide star finder around the rotational angular velocity information of X/Y/Z tri-axle, is namely the rotational angle of star finder after accumulation.3 axle gyro degree of accuracy are wherein higher, but are only have finer guidance when finely tuning to user, beneficial, but inessential, for the purpose of cost-saving, can adopt the electronic guide pin module of band accelerometer.
The concrete step of the simple and easy satellite-finding device of the above embodiment of the utility model is:
1. install star finder on antenna, for portable plate aerial, general plate aerial is directly equipped with star finder, and for parabola antenna, star finder is together with the normal direction at right angle setting of antenna surface.
2. connect tuner and star finder
3. open star finder power supply
4. select satellite, configuring high-frequency head parameter (if the same with last time, then not needing this step)
5. show information on a display screen to comprise:
6., according to target pitch angle information, the up-down adjustment angle of pitch, to angle on target, tentatively completes the angle of pitch and namely completes aligning,
7., according to target polarizing angle information, rotating antenna panel regulates polarizing angle to angle on target, completes the preliminary aligning of polarizing angle.
8., according to target azimuth angle information, regulate position angle to make antenna direction satellite, when present position angle is in azimuth of target is consistent time, namely position angle completes aligning;
9. the orientation of finely tuning antenna makes received signal strength and quality reach maximal value.
10. the angle of pitch of finely tuning antenna makes received signal strength and quality reach maximal value.
The beneficial effect of the above embodiment of the utility model:
Compared with other star finder, add Inertial Measurement Unit, can measure the orientation of antenna, pitching and polarization attitude, according to the attitude of the antenna measured, indicating user carries out correct operation, thus reaches the object fast to star.
Do not require antenna horizontal positioned, suitable environment is extensive, measures antenna attitude, without the need for the requirement of astronomical cycle at surface level, makes accommodation accuracy higher, operate more intuitively easy, greatly improve star efficiency with IMU.
Local environment is not understood to some, or to seeking the unfamiliar operator of star, has good booster action.Such as encamp personnel, herdsman and mining industry personnel etc.
The main applied environment of the above embodiment of the utility model:
1. portable live satellite television receiving equipment;
2. portable dull and stereotyped satellite television receiving equipment;
3. satellite communication portable station.
Claims (4)
1. a simple and easy satellite-finding device, comprises microcontroller, tuner, detuner and display screen, the signal output part of the external satellite antenna tuner of input end of tuner, controls the control signal output terminal of termination microcontroller; Export termination tuner; The control signal output terminal of the control termination microcontroller of detuner, exports termination microcontroller, it is characterized in that, comprise Inertial Measurement Unit and antenna control module, the output termination microcontroller of Inertial Measurement Unit; The control signal output terminal of the control signal input termination microcontroller of antenna control module, the control signal input end of the selector switch of the external satellite antenna tuner of control signal output terminal.
2. simple and easy satellite-finding device according to claim 1, is characterized in that, comprise global positioning module, the output termination microcontroller of global positioning module.
3. simple and easy satellite-finding device according to claim 1, is characterized in that, comprise keyboard, the output termination microcontroller of keyboard.
4. simple and easy satellite-finding device according to claim 1, is characterized in that, Inertial Measurement Unit is arranged on the antenna of satellite antenna, to obtain pitch angle and the position angle of antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520209582.4U CN204557219U (en) | 2015-04-09 | 2015-04-09 | Simple and easy satellite-finding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520209582.4U CN204557219U (en) | 2015-04-09 | 2015-04-09 | Simple and easy satellite-finding device |
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| Publication Number | Publication Date |
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| CN204557219U true CN204557219U (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520209582.4U Expired - Fee Related CN204557219U (en) | 2015-04-09 | 2015-04-09 | Simple and easy satellite-finding device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107946768A (en) * | 2017-11-15 | 2018-04-20 | 北京华力创通科技股份有限公司 | Automatically to star method, apparatus and satellite antenna system |
| CN109561269A (en) * | 2018-12-04 | 2019-04-02 | 安徽站乾科技有限公司 | A kind of simplicity based on automatic identification tuner relevant parameter searches star device |
-
2015
- 2015-04-09 CN CN201520209582.4U patent/CN204557219U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107946768A (en) * | 2017-11-15 | 2018-04-20 | 北京华力创通科技股份有限公司 | Automatically to star method, apparatus and satellite antenna system |
| CN109561269A (en) * | 2018-12-04 | 2019-04-02 | 安徽站乾科技有限公司 | A kind of simplicity based on automatic identification tuner relevant parameter searches star device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150812 |