JP3671521B2 - Inclination detection method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tilt detection how, in particular, relates to a novel improvement for detecting the inclination of the case by the detector with the movement of the mass of the viscous liquid in the case.
[0002]
[Prior art]
Conventionally, as an inclinometer used, an advanced and complicated mechanism such as a gyro has been adopted to electrically display the tilt state numerically.
[0003]
[Problems to be solved by the invention]
Conventionally, since the inclinometer that has been used has been configured as described above, the following problems existed. In other words, when a sophisticated and complicated mechanism such as a gyro is used, high accuracy can be obtained, but low-priced products cannot be obtained. For example, the price required at the construction shop level is provided. It was impossible to do.
[0004]
The present invention has been made to solve the above-described problems, and in particular, a tilt detection method in which the tilt of the case is detected by a detector linked to the movement of the mass body in the viscous liquid in the case. The purpose is to provide the law .
[0005]
[Means for Solving the Problems]
According to the tilt detection method of the present invention, a mass body that swings in a laterally rotatable manner in a case is positioned in the viscous liquid in the case, and the case and the mass body move relative to each other when the case is tilted. the by detecting at the detector, the inclined swash detecting how to detect an inclination of the case, the swing bar for supporting the front SL mass or the mass being in contact with the stopper in the casing , A method of resetting the origin of the indicator that displays the inclination, and a method of using a steel ball as the mass body and an encoder as the detector.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a description will be given of a preferred embodiment of the tilt detection how according to the present invention with reference to the drawings.
What is indicated by reference numeral 1 in the figure is a case having a long shape and an L-shaped cross section. The case 1 is composed of a first chamber 1A and a second chamber 1B. The rotary shaft 2 is separated by an oil seal 3 and a wall 4 that pass through the rotary shaft 2 rotatably. The rotating shaft 2 is rotatably held by first and second bearings 5 and 6 provided in the chambers 1A and 1B.
[0007]
The rotary shaft 2 is provided with a well-known code plate 7, and the case 1 has a well-known light detection unit 8 (called a photo interrupter for those skilled in the art) at a position corresponding to the code plate 7. The detector 9 is composed of a light emitter, a light receiver, and a processing circuit, and detects the rotation angle of the code plate 7, and the above-described code plate 7 and the light detection unit 8 constitute a detector 9 including an encoder. . The encoder 9 is not limited to an optical type, and a magnetic encoder can also be used, and a known resolver or the like can also be used.
[0008]
At a position corresponding to the second chamber 1B of the rotating shaft 2, a rod-shaped swinging rod 10 is integrally provided with a fixing screw 11, and is suspended in a direction perpendicular to the axial direction of the rotating shaft 2, A mass body 12 made of, for example, a steel ball or the like is provided at the lower end of the swinging rod 10, and the mass body 12 is immersed in a viscous liquid 13 such as oil accommodated in the second chamber 1B.
[0009]
A stopper 20 is provided on the inner wall 1 a of the case 1, and an inclined surface 20 a is formed so that the swinging rod 10 contacts. An upper portion of the case 1 is provided with a display 23 having a longitudinal shape and a numeric display 21 and an origin reset switch 22.
The mass body 12 can be brought into contact with the stopper 20 instead of the swing bar 10.
[0010]
Next, the operation will be described. First, after the power is turned on, when the origin reset switch 22 of the display unit 23 is operated in a state where the case 1 is tilted and the swing rod 10 or the mass body 12 is in contact with the stopper 20 as shown in FIG. The number on the display unit 21 is a number representing a predetermined origin.
[0011]
Next, when the notch portion 30 of the above-described inclinometer case with the origin adjusted is joined to a measurement site (not shown) such as a building, the mass body 12 is relatively viscous according to the inclination of the case 1. The detector 9 moves in the liquid 13, and the relative movement between the case 1 and the mass body 12 can be detected as a pulse signal by the detector 9 as the code plate 7 is rotated by the relative rotation of the rotating shaft 2. . Therefore, by setting the resolution of the detector 9 to an arbitrary level, the tilt state can be detected with an arbitrary accuracy.
[0012]
【The invention's effect】
Inclination detecting how according to the present invention, since it is constructed as described above, it is possible to obtain the following effects.
That is, the inclination state can be detected and numerically displayed by a detector that is linked to the mass body that moves in the viscous liquid in the case, and can be supplied to the construction shop level at low cost.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an inclinometer according to the present invention.
FIG. 2 is a right side view of FIG.
FIG. 3 is a front view of an inclinometer according to the present invention.
4 is a right side view of FIG. 3. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Case 2 Rotating shaft 7 Code | symbol plate 8 Light detection part 9 Detector 10 Swing stick 12 Mass body (steel ball)
13 Viscous liquid 20 Stopper 23 Display

Claims (2)

The case (1) in a state in which the mass body (12) swingably swingable in the left-right direction in the case (1) is positioned in the viscous liquid (13) in the case (1) and the case (1) is inclined. by detecting at the detector (9) the relative movement of (1) and the mass body (12), the inclined swash detecting how to detect an inclination of the casing (1), before Symbol mass body (12) Or, with the swing rod (10) supporting the mass body (12) in contact with the stopper (20) in the case (1), the display (23) displaying the inclination is reset to the origin. An inclination detection method characterized by the above.   The tilt detection method according to claim 1, wherein a steel ball is used as the mass body (12), and an encoder is used as the detector (9).

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