CN2562507Y

CN2562507Y - Mobile carrier satellite TV receiver

Info

Publication number: CN2562507Y
Application number: CN 01213494
Authority: CN
Inventors: 张亚平; 周文杰
Original assignee: 7801 INST 068 BASE SPACE AERIAL INDUSTRIAL MINISTRY
Current assignee: 7801 INST 068 BASE SPACE AERIAL INDUSTRIAL MINISTRY
Priority date: 2001-02-27
Filing date: 2001-02-27
Publication date: 2003-07-23
Anticipated expiration: 2011-02-27

Abstract

The utility model relates to a real-time satellite television receiving device on a mobile carrier. The device comprises a satellite television receiving antenna, and an antenna servo tracking mechanism; and is characterized in that more than three global positioning satellite (GPS) receiving antennae and the mated receivers thereof are used as an attitude sensing device of the antenna servo tracking mechanism, and the three GPS receiving antennae are arranged on the satellite television receiving antenna and connected with the mated receivers and computers. By using mature servo-control tracking technology, the utility model provides users the real-time satellite television receiving device on the mobile carrier, with the advantages of low cost, flexible operation, quick response, high accuracy, and stable and reliable performance.

Description

Mobile vehicle satellite television receiving system

The utility model relates to the mobile vehicle field of locating technology, particularly mobile vehicle satellite television reception technique.

The TV programme that normal rating is broadcast by fixed statellite on the carrier that moves such as vehicle, boats and ships is that people are expected always.Can't be in real time because the carrier that moves turns to variation, waves and jolts in moving process, signal such as sending and receiving TV programme stably, people can not be on the carrier that moves in time TV reception and broadcast listening, this difficult problem is resolved gradually along with the development of " inertia is decided the appearance technology " and " SERVO CONTROL tracking technique " in recent years, relevant product also occurs, and reached practicability, carry satellite television broadcasting receiving station etc. as the CWD type ship of ADU2, TANS, VECTOR and Hangtian Tianda Satellite Appliation Technology Co., Ltd., Beijing.China has and has used boat-carrying satellite television broadcasting receiving station on some viking lines, passenger steamer and the foreign-going ship, as five star " east emperor " number, four-star " the Changjiang river jewel " number, space flight ocean surveying vessel " look far into the distance No. one ", " looking far into the distance No. two " etc.The CWD type ship of Hangtian Tianda Satellite Appliation Technology Co., Ltd., Beijing carries satellite television broadcasting receiving station and comprises radome, chassis, support, systems stabilisation, servo system, antenna-feedback system, servo controller, satellite television receiver.But, because present mobile vehicle real-time satellite TV receiving system adopts the high inertia device of price as the attitude of carrier Sensitive Apparatus usually, as gyro attitude sensor spare, it can occur the increase of error with the increase of run duration, need repeatedly calibration, its system is very complicated, so it is very expensive, inland river type CWD type ship carries satellite television broadcasting receiving station price generally all more than 100,000 yuan, and satellite television broadcasting receiving station price is carried generally more than 250,000 yuan in inland river, the universal CWD type ship in ocean.China is a ship sparetime university state, boats and ships quantity and tonnage world rankings the first, owing to its cost an arm and a leg be difficult to by in vast, the user of low level accepts; So, this type of device also is not installed on most of mobile vehicles.

The purpose of this utility model is to use the attitude sensor spare of lower-cost GPS (Global Position System) GPS (hereinafter to be referred as GPS) as mobile vehicle, and utilize ripe SERVO CONTROL tracking technique, for users provide that a kind of cost is low, maneuverability, be swift in response, precision height, reliable and stable mobile vehicle real-time satellite radiovisor.

The utility model is achieved in that it comprises satellite television receiving antenna 1, chassis, support, systems stabilisation, satellite television receiver and antenna servo mechanism 6, antenna-feedback system, servomechanism controller, wherein the attitude sensor spare of systems stabilisation is made of three above GPS reception antennas 2 and supporting receiver 3, computer system 5 thereof, (be longitude and latitude, elevation wherein in order to the position of determining this satellite electric wire reception antenna 1, down with) and the GPS reception antenna 2 of attitude (be the angle of pitch, azimuth, down with) be installed on the satellite television receiving antenna 1; Satellite television receiver and antenna servo mechanism 6 connect with satellite television receiving antenna 1 and computer system 5 respectively, and three GPS receivers 3 connect with computer system 5 by serial interface unit 4.

Outstanding progress of the present utility model is: it has used the lower-cost GPS reception antenna Sensitive Apparatus that gestures, cost reduces greatly, the attitude angle that it calculates is an absolute magnitude, and coordinate system can be a geocentric coordinate system, and the attitude angle that promptly calculates is with respect to a fixing coordinate system; It has used GPS (Global Position System) GPS and servo tracking technology, can be that users provide that a kind of cost is low, maneuverability, be swift in response, precision height, reliable and stable mobile vehicle real-time satellite TV receiving system, can satisfy users' demand.

Further specifically introduce the utility model below in conjunction with embodiment and accompanying drawing thereof:

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is satellite television receiving antenna position, the attitude servo tracking mechanism block diagram of the utility model embodiment.

As shown in Figure 1 and Figure 2, the utility model embodiment comprises that it comprises satellite television receiving antenna 1, chassis, support, systems stabilisation, satellite television receiver and antenna servo mechanism 6, antenna-feedback system, servo controller, wherein the attitude sensor spare of systems stabilisation is made of three above GPS reception antennas 2 and supporting receiver 3, computer system 5 thereof, is installed on the satellite television receiving antenna 1 by the triangle antenna battle array in order to three GPS reception antennas 2 determining satellite television receiving antenna 1 position and attitude; Three GPS receivers 3 connect with computer 5 by serial line interface processing unit 4; Computer 5 is an AWS-846P technical grade industrial workstation; Antenna servo follower 6 comprises position adjustments controller 10, rotation angle detecting apparatus 11, speed regulation controller 14, current regulation control device 15, current transformer 16, A/D change-over circuit 17, motor servo driver 18 and servomotor, and composition electric current loop, speed ring, position ring, position adjustments controller 10, speed regulation controller 14, current regulation control device 15 is respectively position ring, speed ring, the conditioning controller of each self-loop of electric current loop, wherein position ring is a major loop, electric current loop, speed ring is a subloop, each loop all is connected with computer 5, is finished electric current loop by computer 5, speed ring, the digital direct control function of position ring three rings.

The course of work of the present utility model is: three are installed in current location and the attitude that GPS reception antenna 2 on the satellite television receiving antenna 1 can be responsive goes out satellite television receiving antenna 1 by the triangle antenna battle array, with the information input computer 5 of supporting three the GPS receivers 3 of GPS reception antenna 2 with this position and attitude, computer 5 receives stationary satellite position (longitude and latitude) according to GPS reception antenna 2 responsive current location (longitude and latitude) and desires to this mobile vehicle, calculate the angle of pitch and azimuthal controlled quentity controlled variable 9 of satellite television receiving antenna 1, with the set point of this controlled quentity controlled variable 9 as position adjustments controller 10; Rotation angle detecting apparatus 11 adopts the grating angular transducer, and the corner that rotation angle detecting apparatus 11 detects servomotor obtains position feed back signal 12 and speed feedback signal 13, input computer 5; Computer 5 compares the angle of pitch and azimuthal set point controlled quentity controlled variable 9 of satellite television receiving antenna 1 in this position feed back signal 12 and the position adjustments controller 10, obtain the Position Control amount, with this Position Control amount input position conditioning controller 10, form the set point of speed regulation controller 14; Computer 5 is compared this speed feedback signal 13 with the set point of speed regulation controller 14, draw the speed control amount, with the set point of this speed control amount as current regulation control device 15.Current transformer 16 detects current signal, again through A/D change-over circuit 17, analog signal conversion is become digital quantity input computer 5, computer 5 is with this digital quantity formation controlled quentity controlled variable of comparing with the set point of current regulation control device 15, current regulation control device 15 regulating actions are in the electric current of motor servo driver 18, thereby the angle of pitch and the azimuth of 6 pairs of satellite television receiving antennas 1 of driven antenna servo tracking mechanism are adjusted in real time, so move in circles, just can reach the purpose of the satellite that aims at the mark in real time.

Claims

1, a kind of mobile vehicle real-time satellite radiovisor, it comprises satellite television receiving antenna (1), chassis, support, systems stabilisation, satellite television receiver and antenna servo mechanism (6), antenna-feedback system, servo controller, it is characterized in that: the attitude sensor spare of its systems stabilisation be more than three in order to determine satellite television receiving antenna (1) position and the GPS reception antenna (2) of attitude and supporting receiver (3), computer system (5) thereof, wherein GPS reception antenna (2) is installed on the satellite television receiving antenna (1); The antenna servo follower connects with satellite television receiving antenna (1) and computer system (5) respectively, and each GPS receiver (3) connects with computer system (5) by serial interface unit (4).

2, mobile vehicle real-time satellite radiovisor according to claim 1 is characterized in that: three GPS reception antennas (2) are installed on the satellite television receiving antenna (1) by the triangle antenna battle array; Satellite television receiver and antenna servo mechanism (6) comprise position adjustments controller (10), rotation angle detecting apparatus (11), speed regulation controller (14), current regulation control device (15), current transformer (16), A/D change-over circuit (17), motor servo driver (18) and servomotor, and composition electric current loop, speed ring, position ring, position adjustments controller (10), speed regulation controller (14), current regulation control device (15) is respectively position ring, speed ring, the conditioning controller of three loops oneself of electric current loop, wherein position ring is a major loop, electric current loop, speed ring is a subloop, position ring, speed ring, three loops of electric current loop all connect with computer.

3, mobile vehicle real-time satellite TV receiving apparatus according to claim 1 and 2 is characterized in that: current transformer (16) adopts the grating angular transducer.