JPS63245133A - Antenna drive controller - Google Patents

Abstract

PURPOSE:To simplify the fetch processing of a position data by executing the fetch processing of a position data as to at least two satellites and acquiring the position data of other satellite from a parameter when the other satellite is commanded. CONSTITUTION:An input device 4 selects a parameter fetch mode and acquires position data Cx, Cy as to two satellites, then a unit change DELTAC of the position data to a change DELTAA of the unit quantity of a longitude is obtained and stored in a memory 11. When the input device 4 instruct a satellite different from satellites as to a satellite Z to be received, the longitude information Az of the satellite Z is read from the memory 11, the longitude information X of a 1st reference satellite and parameters DELTAA and DELTAC are read from the memory 11 and are calculated to obtain a position data Cz of the satellite Z, then the procedure is proceeded to the routine of adjusting the direction of the antenna 1. Thus, it is not required to fetch position data of all satellites at the installation of the antenna 1 and the installation of the antenna is facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an antenna drive control device, and is particularly suitable for application to a satellite broadcast receiving system.

[Prior Art] For example, in the American continent, satellite broadcasting is actively carried out, and currently around 20 artificial satellites have been launched. Therefore, when a user wishes to receive a desired satellite broadcast, he or she must indicate not only the broadcast channel but also the satellite identification signal. In this way, when a satellite to receive is specified, the satellite broadcast receiving system changes the direction of the antenna so that the parabolic antenna is directed toward that satellite. Such antenna orientation varying operations are performed based on position data for the satellite.

[Problems to be solved by the invention] By the way, even though the artificial satellite for satellite broadcasting is a geostationary satellite whose longitude and latitude are fixed, the positional relationship with the artificial satellite will differ depending on the installation location of the satellite broadcasting receiving device. . Therefore, when installing a satellite broadcast receiving device, it is necessary to take in antenna position data that optimizes the orientation of the antenna for each satellite. Conventionally, such position data has been captured for each satellite by detecting the position where the reception level is maximum for each satellite.

However, as mentioned above, the number of satellites is large, and it takes a long time to obtain antenna position data corresponding to all the satellites. Furthermore, each time a new artificial satellite for satellite broadcasting is launched, an operation must be performed to acquire antenna position data for that satellite.

Since such operations are not always required, it is difficult to force users to learn how to operate them.
It is desired that it be simple.

The present invention has been made in consideration of the above points, and it is possible to easily import the antenna position data, and also to reliably import the position data of each satellite, making it possible to orient the antenna in the appropriate direction. The present invention aims to provide an antenna drive control device that can perform the following tasks.

[Means for Solving the Problems] In order to solve the problems, the present invention provides an antenna actuator means for driving an antenna and outputting position data of the antenna, and an antenna actuator means for driving an antenna and outputting position data of the antenna, and a method for specifying a satellite to receive data. actuator control for starting the antenna actuator means, determining whether the current position data matches target position data determined by a designated satellite by taking in the current position data, and stopping the operation of the antenna actuator means when they match; Reference position data for moving the antenna according to the longitude (or latitude) of a reference satellite and capturing current position data in the optimum reception direction when the parameter capture mode is selected in the antenna drive control device having means. an actuator, comprising: an acquisition means; and a parameter calculation means for calculating a parameter relating longitude (or latitude) and position data based on at least two or more pieces of position data taken in by the reference position data acquisition means; When a satellite to be received is specified, the control means obtains position data about the satellite from the longitude (or latitude) and parameters of the satellite and controls the antenna actuator means.

[Operation] Location data and longitude (or latitude) indicating the antenna position
There is a certain relationship with. Therefore, even if you do not perform the process of importing position data for all satellites, if you know the relationship between position data and longitude (or latitude), you can obtain position data from the longitude (or latitude) of that satellite. I can do it,
You can control the direction of the antenna.

Therefore, the reference data acquisition means executes position data acquisition processing for at least two satellites, and the parameter calculation means calculates these positions based on the obtained position data and the longitude (or latitude) determined for the satellite. Parameters that indicate the relationship are determined, and when another satellite is specified, position data for that satellite can be obtained from this parameter.

As a result, the process of acquiring position data for each satellite can be simplified, and the working time can be shortened.

[Embodiment] Hereinafter, an embodiment in which the present invention is applied to a satellite broadcast receiving system will be described in detail with reference to the drawings.

In FIG. 1, a parabolic antenna 1 captures broadcast waves from a satellite and provides a received signal to a receiver main body 2. The receiving device main body 2 receives this received signal in the channel selection demodulation circuit 3, selects the channel selected by the input device 4, demodulates it, extracts the video signal and the audio signal, and outputs the video signal and the audio signal, respectively, to the display device N5 and the speaker device W6. for viewing by the user.

The receiver main body 2 also includes a system controller 7, which controls the operation of receiving the signal from the input device 4 described above and the channel selection demodulation operation of the channel selection demodulation circuit 3.

In addition, the system controller 7 controls the orientation of the parabolic antenna 1. The antenna 1 is partially attached to the tip of a rod 9 that is moved forward and backward by an antenna actuator 8, and can swing in the longitude direction about an axis (not shown) according to the amount of protrusion of the rod 9. ing. The actuator 8 is an actuator control device 10
The actuator control device 10 is controlled by the system controller 7 to operate in conjunction with other components.

The actuator control device 10 also includes a memory 11 that stores the identification number of each satellite in association with longitude information, and when a satellite is designated by the system controller 7,
The position data corresponding to the satellite is obtained from the information stored in the memory 11 and given to the actuator 8, and when the position data fed back from the actuator 8 (the protrusion amount data of the rod 9) matches the obtained position data, the actuator The antenna 1 is directed in a predetermined direction by stopping the operation of the antenna 8. Note that the position data given from the actuator 8 is also given to the system controller 7.

In order to perform such orientation control, parameters for calculating and determining position data for each satellite are stored in memory 1.
The antenna 1 needs to be stored in advance, and the storage operation is performed when the antenna 1 is installed. This storage operation is performed under the control of the system controller 7 according to the program shown in FIG.

That is, when the parameter import mode is selected by the input device 4, the program is started in step SP1, and the program proceeds to the next step SP2, where the rod 9 is
is controlled to an initial position where protrusion 1 becomes 'l&short.

Next, in step SP3, the first
The reference satellite X (FIG. 3) is taken in, the longitude information Ax of that satellite is read out from the memory 11, and the antenna 1 is moved in the direction of that satellite.

At this time, at the same time, the control signal in the channel selection demodulation circuit 3
For example, the reception situation is determined based on the AGC control signal>,
At the optimal reception point, a stop command is given to the actuator control device 10 to stop the antenna 1.

After this stop, the process proceeds to step SP4, where the position data Cx given to the actuator control device 10 from the actuator 8 is fetched and stored in the memory 11.

Next, in step SP5, the system controller 7 takes in the second designated satellite Y from the input device 4, reads the longitude information Ay of the satellite from the memory 11, and moves the antenna 1 in the direction of the satellite. At this time, at the same time, the reception situation is determined based on the control signal in the channel selection demodulation circuit 3, and a stop command is given to the actuator control device 10 at the optimum reception point to stop the antenna 1.
After the actuator 8 is stopped, the process advances to step SP6 and the actuator 8 is stopped.
The position data cy given to the actuator control device 10 is taken in from and stored in the memory 11.

After obtaining the position data Cx and Cy for the two satellites in this way, the process proceeds to step SP7 and calculates the unit change ΔC in the position data with respect to the change ΔA in the unit amount of longitude by calculating the following formula % formula % The program is stored in the memory 11 in step SP8, and the program is ended in step SP9.

When a satellite is designated, such parameters ΔA and ΔC are used to obtain the position data of the satellite according to the program shown in FIG. For example, when a satellite different from the previous satellite is specified by the input device 4 as the satellite Z to be received in the normal reception mode, step 5 PIO
Then, start the program shown in Fig. 4, proceed to the next step 5P11, and store the longitude information Az of the satellite Z in the memory 1.
1 to 3 are on sale, and then proceed to step 5P12 to obtain the longitude information X of the first reference satellite and the parameters ΔA and Δ
C is read from the memory 11.

Next, the system controller 1 roller 7 performs step 5P1.
Proceeding to step 3, the following equation (%) is calculated to obtain the position data Cz of the satellite Z, and the process proceeds to the antenna 1 orientation adjustment routine.

Therefore, according to the above-described embodiment, it is not necessary to include the position data of all the satellites when installing the antenna 1.
The antenna installation work can be facilitated. Also,
This can also facilitate the task of re-importing location data after it has been installed due to strong winds or the like. Furthermore, even when a satellite is added, there is no need to manually move antenna 1, and longitude information can be stored in memory 1.
This can be done simply by adding it to 1 and storing it.

In addition, in the above-mentioned embodiment, the explanation was given regarding the import of position data in the longitude direction, but the same can be applied to the operation of importing position data in the latitude direction.

In addition, in the above embodiment, position data is calculated each time a receiving satellite is designated, but once the parameters are determined at the time of antenna installation, position data is calculated for each satellite and stored in memory. It may be stored. In this way, the orientation of the antenna 1 can be quickly adjusted during reception.

Furthermore, in the above embodiment, two satellites are used as reference satellites to obtain parameters, but the longitude range is divided into multiple ranges, and parameters are obtained for each range using a reference satellite within that range. You may try to get it.

Further, in the above-described embodiments, the present invention is applied to a satellite broadcast receiving system, but the present invention can be applied to a receiving system that captures radio waves from a plurality of satellites as necessary.

[Effects of the Invention] As described above, according to the present invention, position data about satellites is acquired only for a small number of satellites, and at that time, the relationship between the position data and longitude information or latitude information is calculated and obtained, and other For satellites, position data is obtained from longitude or latitude information and the obtained relationship, making it easier to import position data and making it easier to install antennas and adjust orientation. can.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the antenna drive control device according to the present invention, FIG. 2 is a flowchart showing the procedure for importing antenna drive parameters, and FIG. 3 is a diagram showing the relationship between the longitude and position data of the satellite. Route map for explanation;
FIG. 4 is a flowchart showing the antenna drive processing procedure. DESCRIPTION OF SYMBOLS 1... Antenna, 2... Receiving device main body, 4... Input device, 7... System controller, 8... Antenna actuator, 9... Rod body, 1o... Actuator control device, 11...Memory.

Claims (1)

[Claims] Antenna actuator means that drives an antenna and outputs position data of the antenna, and when a satellite to receive is specified, activates the antenna actuator means and captures the current position data. and actuator control means for determining whether the current position data matches the target position data determined by the satellite designated by the parameter and stopping the operation of the antenna actuator means when they match, the antenna drive control device comprising: when a capture mode is selected, a reference position data capture means moves the antenna according to the longitude (or latitude) of a reference satellite and captures the current position data in the optimum reception direction; and parameter calculating means for calculating a parameter relating longitude (or latitude) and position data based on at least two or more pieces of position data taken in by the receiving means, and the actuator control means is configured such that the actuator control means determines whether the satellite to be received is An antenna drive control device characterized in that, when specified, position data about the satellite is obtained from the longitude (or latitude) of the satellite and the above-mentioned parameters to control the antenna actuator means.