SU1448035A1 - Apparatus for measuring zenith angle - Google Patents

Abstract

The invention relates to a measurement technique and is intended to measure the angle of inclination of a geological exploration well. The goal is to improve the measurement accuracy while simplifying the manufacturing technology. A frame 5 is installed in the case (k) 1, the axis of rotation of which coincides with the axis K 1. Holder 6 is rigidly connected to frame 5, in which the feed 4 is placed

Description

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a light guide 14 with a source of 15 light, a tail light 13 with a receiver 16 of light and a movable disk (D) 9. A mask with concentrically located code tracks is drawn on D 9 from transparent and opaque areas. A separator (P) 12 of light is fixed in frequency with the holder and located between the light guide 14 and D 9. In this case, P 12 is made in three modifications: the first in the form of color lenses located along radius D 9 opposite to the code tracks of color lenses whose dimensions do not exceed width code tracks.

U48035. the second in the form of a prism, between which

and D 9 a lens is mounted in the holder 6, a third is in the form of a diffraction grating. When K 1 tilts, frame 5 is set in the apsidal plane, and D 9 rotates around its axis and returns to its original position. From the source 15, the luminous flux through the light guide 14 enters the R 12, after which certain wavelengths of light fall on the corresponding tracks of the code mask D 9. The value of the zenith angle is matched with the code mask by the light guide 13. 3 Cp. f-ly, 4 ill.

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The invention relates to a measuring technique, namely, to a geophysical well survey, and can be used in a geological survey technique in the development of compact inclinometers, as well as other instruments for measuring the angle of inclination.

The purpose of the invention is to improve the measurement accuracy while simplifying the manufacturing technology of the device,

Figure 1 shows the proposed device; figure 2 - the separator of light in frequency, made in the form of colored lenses; fig.Z - the same, made on the basis of a prism; figure 4 is the same, executed on the basis of the diffraction grating.

The device (Fig. 1) comprises a housing 1 with which the supports 2 and 3 are rigidly connected. In the housing 1 on the supports 2 and 3 and the bearings 4 a frame 5 is installed whose axis coincides with the axis of the housing 1. The holder 6 is rigidly connected to the frame 5, containing a plumb bob 7. In the holder 6 a movable disk 9 is placed in bearings 8, the axis of rotation 10 of which is located perpendicular to the axis of the housing 1. On the movable disk 9, which has a plumb 11, a code mask with concentric spaced tracks made of transparent (active) and opaque (pass0

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sive) sites. With the holder 6, a light frequency divider 12 is rigidly coupled. The discharge light guide 13 and the supply light guide 14 are placed in the holder 6 opposite each other. The separator 12 is located between the light guide 14 and the movable disk 9.

The lead light guide 14 and the lead light guide 13 are connected respectively to a light source 15 and a light receiver 16 located outside the well. An information processing unit 17 is associated with the light receiver 16 to which the display unit 18 is associated.

The separator of light in frequency (figure 2) is made in the form of colored lenses 19, located along the radius of the disk 9 opposite the code tracks. The dimensions of the lenses 19 do not exceed the width of the code tracks, and each code track corresponds to its own color lens.

The light separator in frequency (Fig. 3) is made in the form of a prism 20, which decomposes the light supplied by the connecting light guide 14 to the frequency components. A lens 21 mounted in a holder 6 between the prism 20 and the movable disk 9 directs the light of a certain frequency to the corresponding code tracks.

The light divider in frequency (FIG. 4) is made in the form of a diffraction grating 22, which deflects

light of cancer wavelengths passing from the light guide 14 to different angles. Lens 21 directs the light of a certain frequency to the corresponding code tracks.

The device works as follows.

From the light source 15 through the light guide 14, the light hits the splitter 12, after passing through which certain wavelengths fall on the corresponding tracks of the disk mask 9, and, having passed through the corresponding active areas, the light of the determined wavelengths enters the outgoing light guide 13 and enters the receiver 16 of the light, and from it in digital form - in the block 17 of information processing and block 18 of the display. In the initial state, when the device case 1 is located vertically, a zero combination is set on the disk 9. When the case deviates

From the vertical, in any direction, the frame 5 under the action of the plumb 7 orients along with the converter the angle-code in the apsidal plane, and the code disk 9 under the action of the plumb

I1 returns to its original position, turning around its axis. Together with the housing 1, the separator 12 and the end of the light guide 13 deviate. The deflection angle is equal to the zenith angle, the value of which is read from the code mask by the retracting light guide 13.

Supplying the device with replaceable light dividers in frequency improves the measurement accuracy, simplifies the manufacturing technology of the device, and also reduces its dimensions, since the manufacture of a light separator is much simpler and more technological than manufacturing a code mask in a prototype whose area exceeds the size of the light separator into a number times, corresponding to the number of discrete values of the parameter being measured.

Execution of concentric located code tracks in the form of pro0

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The opaque and opaque areas greatly simplify the code mask and reveal the wide possibilities for its various production options, which makes it possible to obtain sensors of a different class in accuracy for measuring angular and linearly varying values.

Claims (3)

1. A device for measuring the zenith angle, comprising a housing, an source and a light receiver, a frame mounted in the housing, the axis of rotation of which coincides with the axis of the housing, a holder rigidly connected to the frame with j located in it with inlet and outlet light guides and movable disg i com on which a code mask with concentricly arranged code lanes is applied, characterized in that, in order to improve the measurement accuracy while simplifying the manufacturing technology, it is equipped with a light divider in frequency that is rigidly connected to the holder cm and positioned between the inlet conductive waveguide and a movable disk, and the code tracks are made of transparent and opaque portions. 2. The device according to claim 1, characterized in that the light divider in frequency is made in the form of colored lenses located along the radius of the disk opposite the code tracks, and the dimensions of the lenses do not exceed the width of the code tracks. 0 3. The device according to claim 1, characterized in that the separator of light in frequency is made in the form of a prism, and a lens is installed in the holder between the lens and the movable disk. A. The device according to claim 1, of which is that the light divider by frequency is made in the video de grating. 0 five Figg e, 3 FIG.