JPH0256103A - Antenna system - Google Patents

Abstract

PURPOSE:To obtain an always highly accurate antenna system by detecting the displacement of a unit panel by using a laser beam, applying calculation processing and using a controller and a drive means so as to apply automatic correction. CONSTITUTION:When a return laser beam has insufficient intensity from a mirror 6, a controller 16 drives a motor 17 to drive an intermediate reflection mirror 7 slightly thereby stopping the mirror 7 at a position where the return laser beam is received by a photodetector 4 with a sufficient intensity and the information for detecting a rotary angle of the mirror 7 is outputted to a calculation processing unit 15. The unit 15 calculates the position change quantity of the mirror 6 from the detection information and the information relating to the distance between the mirror 7 and a panel mirror and outputs the quantity to the controller 16. A motor section 10 is driven while receiving a signal from the controller 16 to move a vertical shaft 11 vertically thereby moving vertically a desired unit panel 2. It is returned to the position to be set for the correction. Thus, the always high accurate antenna system is obtained.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a large-sized and highly accurate antenna device.

[Conventional technology]

In general, in large, high-precision antenna devices, compared to small and simple antenna devices, the mechanical configuration of the primary mirror panel that reflects radio waves and the primary mirror frame that holds this primary mirror panel must be set and maintained with high precision. It is necessary.

In addition, in a large antenna device, unit frame materials are combined to form a predetermined frame structure and a primary mirror frame, and a large number of unit panels are arranged on the surface of the primary mirror frame to configure the primary mirror panel. This structure includes a secondary mirror panel that faces the panel and exchanges reflected radio waves.

[Problem to be solved by the invention]

Conventional devices are particularly susceptible to deformation due to the weight of the primary mirror panel and secondary mirror panel, where the primary mirror frame consists of a large number of unit panels, as well as local deformation due to local heating or cooling due to sunlight, wind, snow, etc. As a result, it has been difficult to maintain a highly accurate antenna device.

[Means to solve the problem]

This invention has been made to solve this problem, and even if the primary mirror frame is locally deformed and the unit panel disposed thereon is shifted from its predetermined position, the unit panel will be moved by the amount of the shift. The purpose of this invention is to obtain a novel antenna device that maintains high accuracy by automatically returning the panel to its original position.

That is, in the antenna device according to the present invention, a plurality of panel adjusters are provided on a primary mirror frame configured in a predetermined shape, and a unit panel is attached to each panel adjuster to configure a primary mirror panel consisting of a large number of unit panels. At the same time, each panel adjuster is provided with a panel mirror that protrudes from the unit panel, and the laser beam emitted from the center of the primary mirror panel is reflected onto the panel adjuster provided. By returning the unit panel, the amount of change from the preset unit panel position is calculated, and the motor provided in the panel adjuster is driven only by this change needle to return the predetermined unit panel to the preset position. be.

[Effect]

The antenna device of this invention detects the displacement of the unit panel with a laser beam, calculates it, and automatically corrects it by the control device and drive means.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described in detail using the drawings. FIG. 1 is a configuration diagram showing the configuration of the main parts of an antenna device according to the present invention. In FIG. 1, (1) is a primary mirror frame, which is constructed by combining a plurality of unit frame members to form a predetermined frame structure.

(2) is a unit panel arranged on the primary mirror frame (1), and the primary mirror spring /l/ (
3) b: The conductive surface shown in Figure 2 is on the front side.
2a) is provided to reflect radio waves in a predetermined direction. This primary mirror panel (3) has a secondary mirror section (not shown) placed opposite to it.
It exchanges reflected radio waves with the (4) is a laser beam emitting receiver provided on the support base (5), and (6) is a large number of panel mirrors provided on a panel adjuster (9), which will be described later, which are provided to protrude from the unit panel (2). .

(7) is an intermediate reflecting mirror, and the laser beam emitting receiver (4)
The laser beam (8) is reflected and guided to the panel mirror (6) in a predetermined direction, and the laser beam (8) reflected by the panel mirror (6) is returned to the laser beam emitting receiver (4). be.

FIG. 2 is a configuration diagram showing a structure related to a panel adjuster of an antenna device according to Jin's invention. In Figure 2, (
9) is a panel adjuster fixed to the primary mirror frame (1), which has a motor section αO that rotates by an electric signal and a gear section (not shown) that gears down this rotation, and is connected to this gear section. It has a vertical axis Qυ that moves up and down as the motor rotates. 4 is a panel holding metal fitting, the center part of which is fixed to the vertical movement shaft QIJ, and support rods aΦ (141) are attached to both ends of the metal fittings with panel mounting screws α1. Units are attached to these support rod parts α4, respectively. A panel (2) (2) is fixed as shown in Fig. 2. A panel mirror (6) is also provided at the tip of the vertical movement shaft.

Next, FIG. 3 shows an antenna device according to the present invention,
FIG. 7 is an overall configuration diagram for moving the unit panel (2) by the amount of displacement when the unit panel (2) is displaced from a predetermined position due to deformation of the primary mirror frame (1).

In FIG. 3, reference numeral 4 is a calculation processing device in which reference information corresponding to each of a large number of panel mirrors (6) is set and stored, and this reference information includes information regarding the position of a predetermined panel mirror (2), i.e. It includes information regarding the distance from the intermediate reflective mirror (7) to a predetermined panel mirror (2) and information regarding the rotation angle of the intermediate reflective mirror (7) with respect to the predetermined panel mirror (6), and also includes measurement processing described later. The detection information obtained by is input, and calculation processing is performed together with the distance information among the above reference information, and the predetermined panel mirror (6) outputs information corresponding to the amount of change from the preset position. It is.

σ is a control device into which information regarding the rotation angle of the intermediate reflecting mirror (7) relative to the predetermined panel mirror (6) is inputted from the calculation processing device 4, and controls the motor ση for driving the intermediate reflecting mirror (7). While moving and fixing it at a certain angle,
Laser light emitting receiver (
4) to emit laser light. The laser beam (8) thus emitted is reflected by the intermediate reflection mirror (7).
The laser beam hits a predetermined panel mirror (6) and is reflected, and then returns to the laser beam emitting receiver (4) via the intermediate reflecting mirror (7).
If the panel mirror (6) is misaligned and changes from the preset position, the panel mirror (6) is a relatively small reflecting mirror, so the laser beam emitting receiver ( This means that the laser beam (8) emitted from the 4th hole does not return to the source with sufficient intensity.

Therefore, the control device U rotates the intermediate reflection mirror (7) fixed to a predetermined panel mirror (6), so that the laser beam (8) reaches the laser beam emitting receiver (4) with sufficient intensity. Fix the intermediate reflective mirror at the returning rotational position (7)
detects detection information corresponding to the rotation angle that has moved during this period and outputs it to the calculation processing device.

In addition, the control device qsu takes out information corresponding to the amount of change obtained by the calculation processing device αG, and displays it on the unit panel (
2) is outputted to the motor unit 01 that moves.

The information corresponding to this amount of change is, for example, a signal related to the current situation for driving the motor unit αQ.

With the above configuration, first, when the position information for a predetermined panel mirror (6) is input from the calculation processing device 4 to the control device q, the intermediate reflecting mirror (7) is moved to a predetermined position by the control device α. After fixing at the rotational position, the laser light emitting receiver (4) is excited to generate laser light.

The laser beam (8) is reflected by the intermediate reflecting mirror (7), and after being reflected by a predetermined panel mirror (6), it passes through the intermediate reflecting mirror (7) again to the laser beam emitting receiver (4). come back to At this time, when the laser beam emitting receiver (4) receives the returned laser beam, it is determined that the position of the predetermined panel mirror (6) has not changed, and then the next panel mirror (6) is also performs the same process.

However, if the laser beam does not return to the laser beam emitting receiver (4) from the predetermined panel mirror (6) with sufficient intensity or does not return at all, the motor αη is driven by the control device σ and an intermediate intervention is performed. By slightly rotating the reflecting mirror (7), the intermediate reflecting mirror (7) is stopped at a position where the laser beam emitting receiver (4) receives the returned laser beam with sufficient intensity. The rotation angle detection information is output to the calculation processing device QI19.

The calculation processing device C15 calculates the amount of change in the position of the predetermined panel mirror (6) from this detection information and the information regarding the distance from the intermediate reflection mirror (7) to the predetermined panel mirror (6), and calculates the amount of change in the position of the predetermined panel mirror (6). Output to Q. Control device α
Q corresponds to this amount of position change, for example, supplies a time signal for driving the motor unit 00 to the motor unit (10).The motor unit Ql rotates in response to an electrical signal from the control device αe, (Move llυ up and down to move the desired unit panel (2) up and down and return it to the preset position to correct it.b) Note that whether to move the vertical movement axis Qυ upward or downward is This is determined by determining whether the intermediate reflecting mirror (7) is rotated upward or downward when the intermediate reflection mirror (7) is rotated to receive the returning laser beam.

〔Effect of the invention〕

Due to the deformation of the primary mirror frame caused by cooling, changes from the preset positions of many unit panels are
Calculations are made by a calculation processing device based on laser light from a panel mirror provided in the panel adjuster, and the control device drives the panel adjuster to move the unit panel attached to it to the set position. This has the effect that a highly accurate antenna device can be obtained at all times.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of the main parts of an antenna device showing an embodiment of the present invention, FIG. 2 is a block diagram of a panel adjuster of the antenna device according to the present invention, and FIG. 3 is the overall configuration of the antenna device according to the present invention. It is a diagram. In each figure, (1) is the primary mirror frame, (2) is the unit panel, (3) is the primary mirror panel, (4) is the laser beam emitting receiver, (5) is the support stand, (6) is the panel mirror, (7) is an intermediate reflection mirror, (8) is a laser beam, (9) is a panel adjuster, α is a motor part, συ is a vertical movement axis, (6) is a panel holding bracket, (2) is a panel mounting screw , q is a support rod, QQ is a calculation processing device, QQ is a control device, (17) is a motor, and α-ray is an interface. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] A primary mirror frame having a predetermined frame structure, a plurality of drive means provided on the primary mirror frame, drive shafts provided in each of these drive means and driven by the drive means, and a drive shaft for each of these drive shafts. unit panels mounted on each of the main mirror frames and arranged in large numbers on the primary mirror frame to reflect radio waves; panel mirrors protruding from these unit panels and provided on each of the drive shafts; and panel mirrors that reflect incident laser light. an intermediate reflecting mirror; the laser beam is emitted to the intermediate reflecting mirror; the receiving of the returning laser beam from a predetermined panel mirror is detected; and the detected information is outputted;
A control means for driving the driving means, information on the position to be set in advance for each of the panel mirrors, and detection information from the control device to calculate the amount of change in the position of the predetermined panel mirror, and to the control device. and a calculation processing device that outputs an output, the control means drives the drive means based on the amount of change in the position, and corrects each unit panel to a preset position. antenna device.