JPS60213812A - Alidade - Google Patents

Abstract

PURPOSE:To improve surveying efficiency, by converting the amount of movement of a movement plotting needle into a digital value by an encoder, displaying the value, imparting a scale by a switch, and directly displaying the amount of movement by the digital value. CONSTITUTION:An alidade rotates a rotary encoder 14, which is directly connected to a pulley 7, in correspondence with the movement of a movement plotting needle 6. The output of the encoder is displayed on a digital display plate 11 by a printed board 10 having a counter and a scale computing circuit. At first, the movement plotting needle 6 is aligned with a zero point A and the display is aligned to zero by pushing a reset switch 12. Then a specified scale is selected by a scale switch 13. The distance is measured by a optical wave distance meter 30 on a pole 29, which is provided at an object point P2. By using the alidade of the present invention, the engineer can perform his work at the object point with overall judgment being conducted. Therefore, the surveying efficiency is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION Conventional alidade for flat surveying uses a method of creating a drawing by setting the target direction as a standard and plotting distance measurements with a tape measure on the drawing according to the scale.

However, at this time, it was extremely difficult to plot the correct measurement points on the map due to misreading of the scale or unfamiliarity with plotting techniques, and a highly skilled surveyor was required.

In order to eliminate such defects, the moving plotting needle that plots the measurement points on the target direction line on the diagram is slid linearly in a groove in the base, and the amount of movement of the moving plotting needle is converted into a digital electric signal using an encoder. The present invention provides an alidade which is characterized by converting and displaying this, and by giving a scale using a switch, and directly displaying the amount of movement digitally.

The alidade of the present invention will be explained with reference to the drawings as follows.

1, 2, and 3, a straight groove 3 is provided on the upper side of the base 2 of the main body 1, and a linear groove 3 is provided in this groove at both ends of the lower part of the sliding platform 4 of the movable plotting needle 6. b pins 5.5'
are slidably fitted together to allow linear movement along the linear groove.

At the inner end of the slide 4 there are two boos 1 installed inside the base.
7-717' is attached to the belt 8 through the mounting bracket 9,
A rotary encoder 1 is connected to a sliding platform of a moving plot needle, and is directly connected to a pulley 7 according to the movement of the moving plot needle.
4 is rotated, and the encoder output is displayed on a digital display board 11 by a printed circuit board 10 having a counter and a scale calculation circuit. First, move the moving plot needle 6 to the zero point A, press the reset switch 12 to set the display to zero, select the given scale value with the scale switch 13, and calculate the light wave distance on the ball 29 set at the target point P2 shown in FIG. A total of 30 distances were measured. Transceiver 33 measures the measured distance value.
, 33', etc., and plots by moving the moving plotting needle 6 until this distance value matches the numerical value displayed on the display window 11.

There is a zero point plotting needle 15 at the zero point A, and the zero point is plotted in advance, but as mentioned above, the moving plotting needle 6
When aligning with the zero point, do so by setting the rotating shaft 16.

The reference telescope 18 is mounted directly above the ruler 17 at one end of the horizontal axis 19 so as to be rotatable in the vertical direction.

As shown in FIG. 4, a rotary arm 20 is fixed to the other end of the horizontal shaft 19, and the altitude angle can be read using an indicator 22 on the scale of an altitude dial 21 provided at the bottom. Also, there is a fixing device 23 on the outside of the rotating arm, and a fixing screw 26
The reference telescope 18 can be fixed and finely moved in any altitude angle direction by the fine movement devices 24 and 25K.

The reference numeral 27 on the main body 1 in FIG. 1 is a circular bubble tube, and the reference numeral 28 is a battery for driving all the electric circuits of this device.

As shown in Fig. 5, when this device is used in combination with a light wave distance meter 30, place a flat plate on the measurement reference point pl, place the main body 1 on it, and place the light wave distance meter on the upper part on the target point p2. 30
The distance between two points can be measured using the light wave distance meter by setting the ball 29 equipped with a corner prism 31 which is detachably attached to the reference telescope of the main body 1 by means of a support fitting 32.

As explained above, when using the alidade of the present invention, if the observer moves the movable plotting needle without using the conventional scale on the ruler pointing in the reference direction, the plotting position will be automatically adjusted according to the selected scale. This completely eliminates plotting mistakes and misidentification of the scale, allowing even inexperienced users to carry out accurate surveying, and eliminates the need to prepare or replace a replacement scale that was previously selected depending on the scale used. All it takes is one operation.It goes without saying that there is no problem in using the alidade of the present invention in combination with a light wave distance meter and using a conventional tape measure for distance measurement.

Furthermore, conventional flat plate surveying required a highly skilled engineer on the flat plate side and an assistant on the pole side, but when using the alidade of the present invention, there is no need for an engineer on the flat plate side, but an engineer on the target point side. This is an innovative alidade that not only enables high-quality surveying because it allows surveying work to proceed while making comprehensive judgments, but also prevents repeat measurements and increases surveying efficiency, which greatly reduces surveying costs. This is what we provide.

[Brief explanation of the drawing]

Figure 1 is a schematic vertical cross-sectional view of the alidade of the present invention, Figure 2 is a schematic diagram showing the structure of the base surface, Figure 3 is an elevational view seen from the rear, and Figure 4 is a schematic side view showing the structure for reading the altitude angle. be. 1st grade (4th grade ÷ 9C1 grade. Code explanation 1...Main body, 2...Base, 3...Straight groove, 4...
... Slide, 5,5'... Pin, 6... Moving plot needle, 7.7'... Pulley, 8... Belt, 9...
...Mounting bracket, 10...Printed circuit board, 11...Display board, 12...Reset switch, 13...Scale switch, 14...Rotary encoder, 15...Zero point plot needle, 16... ... Rotation axis, 17 ... Ruler, 18
... Reference telescope, 19 ... Horizontal axis, 20 ... Rotation arm, 21 ... Altitude scale plate, 22 ... Index, 23
...Fixing device, 24.25...Fine movement device, 26...
・Fixing screw, 27...Circular bubble tube, 28...Battery, 29...Ball, 30...Light wave distance meter, 31
...Corner prism, 32...Corner prism support fitting, 33.33'...Transceiver-1A...
・Zero point, L...distance between two points, pl...measurement reference point,
p2...Target point Oh 1 sword Shuji January

Claims (1)

[Claims] The alidade used in flat surveying has a structure that digitally converts the amount of movement of the moving plotting needle using an encoder and displays this, and also selects the distance to the target point with a switch according to the plotting scale and changes the distance of the plotting needle. A corner prism can be detachably attached to the optic telescope in accordance with the amount of movement, and the distance between the two points can be measured using the corner prism as a standard, and this measured value can be transmitted to the transceiver. An alidade that can be transmitted to the observer on the alidade side and plotted with a moving plotting needle on the scaled distance point on the reference direction line.