DE8801456U1 - Instrument for adjusting the elevation and azimuth angles of satellite communication antennas - Google Patents

Description

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The invention is intended as an instrument for the diagnosis and follow-up of symptoms of flatulence.

When setting up or carrying out maintenance work on satellite control antennas, the antenna must be adjusted or the adjustment checked in relation to the azimuth and elevation angle values. The angle values must be set very precisely - usually with an accuracy of less than 1°. The adjustment is time-consuming and has so far been carried out using two different measuring devices that are not coordinated with each other.

It is therefore an object of the invention to reduce the adjustment and maintenance times.

According to the invention, these objects are achieved in that the two instruments, inclinometer and compass, are connected to one another in accordance with claim 1.

The invention is further developed according to claim 2. The flexible design of the holding device or the installation device enables a precisely defined reference point on the receiving system and thus simplifies the setting and checking of the angle values.

The preferred development of the invention specified in claim 3 makes working particularly easy, because such an interference pattern reacts very sensitively even to small angle changes and enables the fine adjustment required for receiving satellite signals.

In addition, the compass can be attached to the protractor and the lateral reading by means of the degree shift allows for convenient and quick adjustment *

the elevation and flood angles of high burial. :

A proposed device for carrying out a method according to the invention is the subject of claim 4.

By attaching it to the antenna receiver head or by installing it in a precisely defined position in the receiving system, the elevation and azimuth angles are directly measured or checked.

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The further details and advantageous developments of the invention emerge from the following claims. Particular emphasis should be placed on the arrangement of the sub-instruments in relation to one another, which form a three-axis system, with the degrees of freedom obtained thereby. Further details and advantageous developments of the invention emerge from the embodiments described below and shown in the drawings, which are in no way to be understood as a limitation of the invention, as well as from the further subclaims.

It shows:

Fig. 1 a symbolically represented receiving system viewed from above. Azimuth angle A- angle to the prime meridian. State of the art.

Fig. 2 shows a symbolically represented receiving system viewed from the side. Elevation angle E - angle relative to the horizon. State of the art.

Fig. 3 a symbolically represented receiving system with examples of the installation of the preferred instrument.

Fig. 4 shows a preferred protractor/compass and two different mounting devices.

Fig. 5 shows a preferred protractor/compass for installation in a mounting device or use without a mounting device.

Fig. 6 a preferred compass and the assignment to the protractor. Fig. 7 a preferred protractor/compass in different spatial positions.

Fig. 1 and 2 show the two angle settings, elevation and azimuth, which are set or checked using the invention. The invention is not limited to this attachment or installation option or only to this type of antenna.

The preferred form of the invention is shown in Fig. 3 on the receiving head (15), on the antenna mirror (16) and in the installed state (17). The antenna can be swiveled sideways and vertically in order to be directed at the satellite to be received. The invention shows these two values in the preferred embodiment.

Fig. 4 shows the invention in detail. The protractor (30,31) of known design has a housing (34). A rotary knob (33) is used to specify a target angle value according to the elevation angle or to check

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of the set angle* The setting, using the rotary knob (33), acts on a rotating disc (33) which is provided with a scale that is graduated from the zero point to the left and to the right. The rotating disc

(35) is provided with a line grid (37). When the disk (35) is set to the desired elevation angle on the movable scale (36) and the zero point on the vernier scale (39), the grid (37) rotates with it. Inside the disk (35) there is a disk with a second grid (38) mounted on ball bearings and below the grid (38) there is a weight (32) which, due to the effect of gravity, always seeks the greatest proximity to the center of the earth and therefore pulls the grid (38) into an exactly horizontal position. When the two grids (37) and (38) are exactly parallel, wide parallel lines can be seen in the display window of the protractor, i.e. the angle on the scale

(36) corresponds to the angle of the housing (34) or fastening device (25,26,27). If the parallelism deviates, an arrow pattern appears in the display window of the protractor.

The elevation angle can be set or read with an accuracy of 0.2° using the vernier scale (39).

According to the Matura, any other protractor can be used, although in practice the protractor described has proven to be particularly advantageous.

Fig. 4 also shows the arrangement and fastening of the compass (40). The compass (40) is fastened to the lower part of the disk (35) below and parallel to the grid (37). As a result, the compass (40) rotates when the disk (35) is rotated via the adjusting screw (33) and is always exactly horizontal when the lines in the indicator window are parallel. There is a hinge or folding device (44) between the fastening (49) and the compass carrier (47). With the hinge (44), the compass (40) can always be brought into the horizontal position even if it is tilted to the side. When not in use, the compass (40) is folded up against the protractor (30-31) and the compass carrier disk (47) serves as protection for both the compass and the protractor.

Fig. 4 also shows various fastening devices (25,26*27). The fastening device (28) consists of a U-profile and is provided with fastening elements (29)* As a fastening element (29)

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Screws (as shown), clamping plates, springs, etc. can be used. The width of the metal profile (28) is designed so that different support surfaces in the antenna receiving head can be bridged by the support elements. The securing plate (26) is designed to increase the contact surface of the instrument.

Fig. 5 shows a housing design for the installation of the integer in a mounting frame (27) or similar installation device, which is attached to the antenna body or its support frame at a precisely defined angle in relation to the antenna, both the azimuth and the elevation. The best installation case is 0° azimuth and 0° elevation.

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can be compensated accordingly during adjustment.

Fig. 6 shows the movable compass (40) with scale ring (42) on the floating compass rose as well as the outer scale ring (45) and the bearing window (41). The scale ring (42) on the movable compass rose is offset by 90° to east in relation to the compass needle (46), which in the hot case points north 0°. This ensures that when filing in the window (41) the angle value is displayed in direction (43), i.e. offset by 90°.

The purpose of moving the compass needle is to ensure that the correct angle value of the azimuth and elevation can be read off to the side of the antenna’s main direction (48).

The compass can also be used as a direct bearing compass in the longitudinal direction (48) of the protractor by turning the housing (40) 90° clockwise, but the compensation of 90° must be taken into account when determining the angle.

Fig. 7 shows different positions of the protractor and the compass to illustrate the excellent solution of the invention.

Claims (11)

Inventor; Dipl.-Kfmn.,Ing. Lars-Göran Sohlberg Friedrichsberg 47, 7000 Stuttgart 80 Naming of the inventor; Instrument for setting the elevation and azimuth angles in protection claims 1. Device for setting or checking the azimuth and elevation angles in satellite communication antennas, characterized in that a holding device (25, 26) for fastening to the antenna receiving head (30), antenna mirror (31) or antenna grid (32) or a mounting frame (22) for fixed installation (33) is provided, and that an instrument consisting of an angle measuring device (1) for measuring the elevation angles relative to the horizontal or relative to the vertical and a compass (10) for measuring the azimuth angles relative to the zero meridian are arranged on this holding device (25, 26) or mounting frame (22). 2. Device according to claim 1, characterized in that the angle measuring device (1) is provided with an adjustment device (3) for setting a target value for elevation angles or for checking the elevation angles, and that the compass (10) is provided with a direction-finding device (11) for setting or checking the azimuth angles. 3. Device according to claim 1 and 2, characterized in that the angle measuring device (1) is provided with a device (7, 8) for optically displaying angle settings of the holding device (25, 26) or installation device (22). 4. Device according to claim 3, characterized in that the device is designed as an optical interference filter (7,8). 5. Device according to at least one of the preceding claims, characterized in that the angle measuring device (1) has a -2- • .·: j &igr; : j : Il It ·&Igr; III I ·»· rotatable scale (5,6) and a second grid arrangement (8) that can be rotated relative to it and can be set to a specific position relative to the vertical by means of the optical effect. This grid arrangement produces a specific optical interference pattern when the target and actual values coincide. 6. Device according to at least one of the preceding claims, characterized in that the compass (10) is provided with a compass display in which the degree division (12) is offset by 90° clockwise. 7. Device according to at least one of the preceding claims, characterized in that the compass (10) is attached to the protractor (1) parallel to the direction of bearing (18) and parallel to the protractor (1), rotatable disk (15), holding device (25, 26) or installation frame (22). 8. Device according to claim 7, characterized in that the compass (10) is attached to the protractor (1), to the disc (5) adjustable by the adjusting device (3) with a fastening arrangement (19). 9. Device according to at least one of the preceding claims, characterized in that the connection between the compass (10) and the fastening arrangement (19) is provided with a hinge or folding device (14). 10. Device according to claim 9, characterized in that the hinge or folding device (14) is designed for adjustment of the compass (10) from folded in - relative to the protractor - to continuously downwards. 11. Device according to at least one of the preceding claims, characterized in that the holding device (23) of a U-profile (24) or similar structure is provided with fastening screws (29) or clamps. 12· Device according to at least one of the preceding claims« characterized in that the holding device (25, 26) and the installation device (22) are arranged parallel to the disc (3) and compass (10)· -3- &igr; ·· ■· ■· ·