JP2007093568A - Gravitational field motion type gravity measuring system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light-weight gravimeter convenient for carrying. <P>SOLUTION: By shifting the standpoint from falling rate of a measuring object, elongation of a spring, and magnetic repulsion to which conventional devices paid attention to gravitational field curve, gravity G is known by change in weight, caused by motion of an object within the gravitational field curve. Power is transmitted from a motor 1 to a rotator 3 which is horizontally arranged via a belt 2 to give a high rotational speed thereto. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a gravimeter that is reduced in size and weight by the idea of measuring gravity G using an object that moves in a gravitational field curve.

A conventional gravimeter focuses only on the mass and precisely measures the falling speed, the extension of the spring, the repulsion of the superconducting magnet, and the like.

Hereinafter, a conventional gravimeter will be described with reference to FIGS. In FIG. 1, 1 is a vacuum cylinder. The falling speed in this is measured. Gravity G is measured by measuring the fall time in vacuum.

Figure 2 shows an instrument that uses the magnetic repulsion of a superconducting material. The distance between the two superconducting magnets is measured and the gravity G is measured.
Figure 3 shows a precision spring. A reference device is attached to the tip of the spring and the gravity G is measured from its extension.

The conventional gravimeter described above has a large peripheral device, costs, and great care has been required for transportation.

The present invention is intended to solve the problems of such a conventional configuration, and aims to realize light weight and convenience of carrying.

In order to achieve the above object, the present invention pays attention to the use of a gravitational field curve of physics, and solves the above problems by comprising a rotating body, a rotational speed measurement counter, and a rotating body driving motor.

The operation of the first problem solving means is as follows. When an object flying from outer space is caught in the earth's gravitational field, it will fall freely while rotating in a circular arc toward the center of the earth along the gravity curve. At this time, if the speed is applied to the object in the horizontal direction, the principle that the falling state changes is used.
The structure of the present invention is simple. The power is transmitted by the motor 1 to the rotating body 3 disposed horizontally via the belt 2 to apply a high rotational speed.
Although the rotating body 3 receiving the force of gravity G on the ground remains on the ground surface, the actual state can be defined as being in a state of receiving the force within the gravity curve. Here, obtaining the rotational speed in the horizontal direction leads to changing the direction of motion in a spiral shape within the gravity curve. This force eventually changes the fall state. Furthermore, when the motion speed is applied in the horizontal direction, the force to move the coordinates outward from the center of the earth works within the gravitational field curve. When this force is balanced with G, that is, the rotating body is zero gram in the vertical direction.
By reading the rotational speed at this time and comparing it with the data, the gravity G at that location can be measured.

  As described above, the gravimeter of the present invention can achieve a simple structure, robustness, convenience, and low cost.

BEST MODE FOR CARRYING OUT THE INVENTION

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  In FIG. 4, reference numeral 1 denotes a motor for driving the rotating body, which is fixed with sufficient strength. 3 is a rotating body and is driven by a belt. Reference numeral 4 denotes a rotation sensor that measures the rotation speed of the rotating body 3. The speed is recorded when the weight of the rotating body is 0 gram in the vertical direction. Reference numeral 5 denotes a bearing of the rotating body 3. The weight of the rotating body is determined from the vertical position of the bearing when the spring 6 is freely extended.

  Illustration of the principle of a conventional gravimeter   Illustration of the principle of a conventional gravimeter   Illustration of the principle of a conventional gravimeter   Explanatory drawing of a gravimeter showing an embodiment of the present invention   Illustration of the motion of a substance trapped in a gravitational field

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Motor 2 Drive belt 3 Rotating body 4 Speed sensor 5 Bearing 6 Bearing spring

Claims (1)

The motor 1 that is driven at high speed has a structure in which the rotating body 3 is rotated in the horizontal direction at high speed via the belt 2. When this rotating body rotates at a high speed in the horizontal direction, it is equivalent to a high-speed horizontal movement in the gravity field curve of the earth. As this movement increases further, it will stay on the contours of the gravitational field curve.
At this time, the force toward the center of the earth in the gravitational field curve balances with the force to move out of the earth orbit, resulting in a zero-gram moment. Gravity G is measured by measuring the speed of the rotating body at that time.

Images