JP2002267523A - Object mass measuring system for minute gravity rotating body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply measure the mass of objects in containers such as boxes, in the case of an object mass measuring system for minute gravity rotating bodies. SOLUTION: Recessed parts 10a and 10b are provided in a casing 10, and both end parts of a rotary shaft 30 are supported by bearings 10a and 10b. The lower end of the shaft 30 is connected to a motor, four arms 24 to 27 are fixed on horizontal X and Y axes, and the containers 20 to 23 such as boxes are mounted on the ends thereof. The boxes 20 to 23 with plants, animals, or the like housed therein are rotated in outer space to perform experiments. Side plates 1a to 1d, acceleration sensors 2a to 2d, and distance sensors 3a to 3d are disposed in the boxes. The mass of the internal objects is found based on signals generated from the sensors 2 and 3 by the collision of the objects with the side plates.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an object mass measuring system for a microgravity rotating body, and more particularly to a system capable of reliably measuring the mass of an object in a rotating body in a microgravity space.

[0002]

2. Description of the Related Art FIG. 9 is a plan view showing an example of a rotating device currently used in space. In FIG. 9, a rotating device 60 such as a motor has four support members 61, 62, 63, and 63.
64 are mounted and extend radially. Support member 61
Boxes 70, 71, 72, 7
3 is attached, and a target object, for example, a plant or the like is placed in containers 70 to 73 such as boxes. Such a device can be rotated approximately one revolution /
Containers such as boxes 70 to 73 that are given low-speed rotation of about
An experiment is performed on the objects within.

In the rotating device described above, the support member 61
The containers 70 to 73 such as boxes are attached to the tips of the elements 64 to 64, and the tips are large. Different types of target objects are stored in containers 70 to 73 such as boxes.
The size of the experimental object also varies, and the entire device is a device symmetrical about the rotation axis, but the stored object is unbalanced. Accordingly, the rotation generates vibrations in the support members 61 to 64 and the containers 70 to 73 such as boxes, and when the vibrations are generated, the target object is fluctuated or adversely affected.

[0004] In order to eliminate such vibrations, various methods have been proposed in which the generated vibrations are detected and these vibrations are absorbed by moving a counterweight or by interposing a magnetic bearing, a spring, or the like. It has been studied to prevent the vibration generated from the rotating device from propagating to other devices in outer space.

[0005]

As described above, in the conventional rotating apparatus in space, vibration is generated during rotation, and a vibration is given to a container such as an arm or a box which constitutes a rotating body, thereby adversely affecting a target object. Was exerted. In addition, these vibrations propagate to the surrounding environment via the rotating shaft, affect the surrounding space equipment, and also affect the control of the equipment.
Such vibration is caused by the mass imbalance of the object in the container such as a box, and is generated by acceleration caused by rotation of the imbalance. The target objects placed in containers such as boxes are mainly plants and animals, and these objects change their mass due to growth,
Therefore, an unbalanced amount of mass occurs between containers such as boxes. On the other hand, in space, measuring the weight of an object or measuring the amount of imbalance is not as easy as performing it on the ground, and it has been desired to establish some method. In the microgravity space, if the mass of the object and the amount of unbalance of the rotating body can be easily measured, measures for suppressing the vibration force generated in the rotating device during rotation can be taken more reliably.

Therefore, the present invention provides an object mass measuring system which can easily measure the mass of an object to be accommodated in a container such as a box of a rotating device which rotates in a microgravity space without taking it out of the container such as a box. The task was to provide

[0007]

The present invention provides the following means for solving the above-mentioned problems.

(1) The present invention is applied to a microgravity rotating body having a plurality of containers such as boxes which are attached to a rotating shaft, rotate about the rotating shaft, and accommodate an object to which gravity is added, and measure the mass of the object. In the system, a plurality of side plates attached to each side surface of the inside of the container such as each box through a spring body substantially parallel to the wall, an acceleration sensor attached to each side plate, and each of the side plates A distance sensor mounted in the container such as the box in proximity to the side plate to detect a distance of the object; a signal of the acceleration sensor when the object collides with the side plate; A displacement signal of the object and the signals of the distance sensor at the initial position before the collision and the position of the distance sensor at the position at the time of the collision, and calculate the mass of the object by calculating based on these signals. Object mass measuring system of microgravity rotating body characterized in that it comprises a.

(2) The present invention is applied to a microgravity rotating body having a plurality of boxes or the like, which is attached to a rotating shaft, rotates about the rotating shaft, and stores therein an object to which gravity is applied, and measures the mass of the object. A pressure sensor, a displacement sensor, an acceleration sensor, or a plurality of side plates attached substantially in parallel to a wall surface via a sensor unit in combination with a pressure sensor, a displacement sensor, an acceleration sensor, or the like on each side surface of the inside of the container such as the box; A signal from the respective sensors or a signal from the sensor unit based on a load applied to the side plate, and a calculating device for calculating the mass of the object by calculating based on these signals. The object mass measurement system of the microgravity rotating body.

(3) The object mass measuring system for a microgravity rotating body according to (1), further comprising a display device for displaying a result calculated by the arithmetic unit.

(4) A side plate attached to one side surface of a cabin, a laboratory, a container, a space factory, or the like via a spring body with a displacement sensor, an acceleration sensor attached to the side plate, and the cabin A first position sensor disposed in a laboratory, a container, a space factory, or the like, for detecting an object to be measured having reached the position of the side plate, and a first position sensor and the first position sensor are arranged at a predetermined distance from each other. A second position sensor that detects the passage of the object, an extrusion device that is disposed on the other side of the cabin, the laboratory, the container, the space factory, and pushes the object toward the side plate; The arrival and passing signals of the object detected by the second position sensor, the signal of the acceleration sensor when the object collides with the side plate, and the signal of the displacement sensor of the spring body at the time of the collision are taken into these signals. Based on the Object mass measuring system of microgravity rotating body characterized by comprising an arithmetic unit for calculating the mass of the body.

(5) A side plate attached to one side surface of a cabin, a laboratory, a container, a space factory, or the like via a spring body with a displacement sensor, an acceleration sensor attached to the side plate, and the cabin A first position sensor, which is disposed in a laboratory, a container, a space factory, or the like, and detects a human body to be measured that has reached the position of the side plate, and is disposed at a predetermined interval from the first position sensor. A second position sensor for detecting the passage of the human body, a stand with a handrail for the cabin, a laboratory, a container, in a space factory, and the like, which is disposed on the other side and for the human body to jump out toward the side plate, The first,
The arrival and passage signals of the human body detected by the second position sensor, the signal of the acceleration sensor when the human body collides with the side plate, and the signal of the displacement sensor of the spring body at the time of the collision are taken into these signals. And an arithmetic unit for calculating the weight of the human body based on the weight of the human body.

(6) The system for measuring an object mass of a microgravity rotating body according to (4) or (5), wherein a result calculated by the arithmetic unit is displayed by providing a display device.

In (1) of the present invention, the object is housed in a container such as a box, is in a microgravity environment, and its mass cannot be easily measured. Therefore, when measuring the mass of an object in the present invention, the rotation of the rotating shaft is instantaneously accelerated,
The object is caused to collide with any side plate on the inner surface of the box by the method described above. An acceleration signal from an acceleration sensor at the time of a collision, a displacement signal of a spring body at the time of a collision, and a position signal of an object from a distance sensor are respectively input to the arithmetic device, and the arithmetic device receives the object signal based on these signals. Can be calculated by calculation in a state where is put in a container such as a box.

According to the measurement system (1) of the present invention described above, it is not necessary to take out the object in a state where the object is placed in a container such as a box. The mass can be easily measured simply by colliding with the inner side plate.

In (2) of the present invention, the arithmetic unit inputs each signal from the pressure sensor, the displacement sensor, and the acceleration sensor,
Since the mass of the object is measured by the same calculation as the invention of the above (1), the mass is measured with higher accuracy as the number of sensors is larger.

In (3) of the present invention, since the result calculated by the arithmetic unit is displayed on the display device, the mass of the object can be easily confirmed when necessary without handling the object. The function of the system of the invention 1) is further improved.

In (4) of the present invention, the object to be measured is pushed toward the side plate by the extruder at the start of the measurement, and floats in the space and collides with the side plate. In the course of the movement, the first position sensor detects the passage, and upon reaching the side plate, the second position sensor detects the arrival. The signals of the first and second position sensors, the signal of the acceleration sensor when the object collides with the side plate, and the displacement signal of the spring body are taken into an arithmetic unit, and the speed and acceleration of the object are calculated based on these signals. The mass of the object is calculated from the calculated value, the signal of the acceleration sensor, and the displacement signal of the spring body. According to (4) of the present invention, the mass of the object can be easily calculated by calculation only by colliding the object with the side plate.

In (5) of the present invention, a stand with a handrail is provided in place of the extruding device of the invention of (4) so that the weight of a person working in space can be easily grasped in the microgravity space. It was done. The person to be measured grasps the handrail, jumps out toward the side plate, moves toward the side plate, and collides with the side plate, thereby performing the same operation as measuring the mass of the object in the invention (4). The arithmetic unit can calculate the weight based on the first and second position sensors, the displacement signal of the spring body, and the signal of the acceleration sensor.

In (6) of the present invention, since the mass of the object and the weight of the person calculated by the arithmetic unit are displayed on the display device, the functions of the inventions of (4) and (5) are further improved. It is.

[0021]

Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 shows an object mass measuring system for a microgravity rotating body according to a first embodiment of the present invention, wherein (a) is a side view inside a casing, and (b) is a view taken along the line AA in (a). is there. In FIG. 1A, reference numeral 10 denotes a casing, and the casing 10 is provided with upper and lower concave portions 10a and 10b. Upper and lower recess 1
Bearings 11 and 12 are provided in Oa and 10b.
The bearings 11 and 12 are configured by magnetic bearings, bearings made of an elastic material, a spring, or the like.

Reference numeral 30 denotes a rotating shaft, both ends of which are disposed in the recesses 10a and 10b, respectively.
3 and both ends are supported by bearings 11 and 12. Arms 24, 25, 26, and 27 are attached to the rotating shaft 30 radially in the horizontal direction as shown in FIG. 2B, and containers 20, 21, 22, and 23 such as boxes are attached to each arm. I have.

In the rotating device having such a configuration, a target object, that is, a plant or an animal is put in the containers 20 to 23 such as boxes, and the motor 13 is driven to rotate at low speed in the space environment. Experiments are conducted to observe the growth of plants and the survival of animals in space. The containers 20 to 23, such as boxes, accommodate such experimental materials having different shapes, sizes, and weights. Therefore, when rotated, the acceleration caused by the imbalance of the weights between the containers 20 to 23, such as boxes, differs from each other. And vibration occurs between the boxes. This vibration is transmitted to the arms 24 to 27 and
0 is vibrated, and this vibration is transmitted from the bearing portion to the casing 10 and propagated to the external environment, which adversely affects the surroundings.

The plants and animals in the containers 20 to 23 such as the boxes grow as time elapses, causing a difference in the mass in each box and an imbalance in the rotating body. In the microgravity environment of outer space, the amount of unbalance cannot be measured as in the case of the ground, and the amount of unbalance cannot be measured. Therefore, the result of vibration generated when the rotating device rotates is detected and controlled. Shaking had been done.

In the embodiment of the present invention, the mass of an object in a container such as a box of a rotating device can be easily measured in outer space, whereby imbalance can be recognized and vibration control of the rotating body can be effectively controlled. This is done so that it has the following configuration.

In FIG. 1, containers 21 and 21 such as boxes
Inside 2, 23, 24, side plates 1a,
1b, 1c and 1d are attached by a spring body 4 so as to be substantially parallel to the wall surface of a container such as a box. Although not shown, a sensor for detecting the displacement signal is incorporated in the spring body 4. Each side plate 1a, 1b, 1c,
On the back of 1d, acceleration sensors 2a,
2b, 2c and 2d are attached. Furthermore, distance sensors 3a, 3b, 3c, 3d are provided on the upper surface inside the containers 20, 21, 22, 23, such as boxes, corresponding to the respective side plates 1a to 1d, and at positions close to the upper end surfaces of the respective side plates. Installed.

FIG. 2 is a detailed view showing the inside of a container 20 such as a box of the rotating device shown in FIG. 1, (a) is a top view of the inside,
(B) is a BB arrow view in (a). Figure (a)
In, the four sides around the inside of the container 20 such as a box,
Side plates 1a, 1b, 1c, 1d are attached by spring bodies 4, respectively. Acceleration sensors 2a, 2b, 2c, 2d are respectively attached to the back surfaces of the side plates 1a, 1b, 1c, 1d, and distance sensors 3a, 3b are provided on the upper surface in close proximity to the surfaces of the side plates 1a to 1d, respectively. , 3c, 3d are mounted.

In FIG. 2B, as shown, the distance sensors 3a to 3d are mounted on the upper surface of a container 20 such as a box, and are arranged close to the upper ends of the side plates 1a to 1d. The side plates 1a to 1d are supported on the inner wall surface at four places by spring bodies 4, and the acceleration sensor 2a
~ 2d are attached. Similarly, container 2 such as a box
Although illustrations of 1, 22, and 23 are also omitted, the description is omitted because they have the same configuration.

FIG. 3 is a control system diagram according to the first embodiment of the present invention. For convenience of explanation, only the system of the container 20 such as a box is shown, and the illustration of 21 to 23 is the same, so that it is not shown. Referring to FIG.
However, as described above, the four side plates 1a to 1d are attached, and the acceleration sensors 2a, 2b, 2
c, 2d are provided, and the detection signal of each sensor
Is input to Further, distance sensors 3a, 3b, 3c, 3d are attached to the inner upper surface of the container 20, such as a box, corresponding to the acceleration sensors 2a to 2d, respectively, and the detection signals of these sensors are also input to the arithmetic unit 5. . Further, a displacement signal of the spring body 4 is also input to the arithmetic unit 5. The arithmetic unit 5 calculates the mass of the target object in the container 20 such as a box based on these signals, as described later, and displays this on the display unit 6.

FIGS. 4A and 4B are explanatory diagrams showing the principle of mass measurement in the first embodiment, wherein FIG. 4A is an explanatory diagram and FIG. 4B is a diagram showing the positional relationship between objects. In (a), the example of the side plate 1a is described in the figure, but the same principle applies to 1b, 1c, and 1d, and the description thereof will be omitted.
In (a), the object is caused to collide with the side plate 1a as indicated by 40 from the position of 40a. This operation is performed by instantaneously changing and adjusting the rotation speed of the container 20 such as a box.
It can be performed using the centrifugal force. In the illustrated example, the object 40 is moved obliquely upward, as shown from the initial velocity V _1, it is an example of the collision to the side plate 1a at a velocity V _2.

In the course of the movement of the object 40, the distance sensor 3a measures the distance L ₁ at the initial position and the distance L ₂ at the time of the collision, and is input to the arithmetic unit 5. The arithmetic unit 5 determines L ₀ , that is, the moving distance of the object 40 from L ₁ and L ₂ , so that the speed V ₂ is V ₂ = L ₀ /
The average speed is calculated by the movement time (t). Incidentally, the speed V ₁ of the initial object 40a is a distance sensor 3
a is similarly calculated as the average distance by measuring the distance L ₁ ′ between the preceding object 40a ′ and 40a.

The acceleration signal at the time of collision is sent to the acceleration sensor 2a.
The signals of the twist amount and the amount of deformation of the spring body 4 are respectively calculated by an arithmetic unit.
5 is input. (B) is a moving state in the state of (a).
It is a figure which shows a state, and K is the side plate 1a surface of the distance sensor 3a.
Distance, the measured value L ₁, L_Two, Constant K and L
₀Indicates that it can be obtained by calculation.

In the above state, V ₁ : initial speed, V
₂ : velocity at collision, t = movement time of object, α: acceleration signal at collision, m ₁ : mass of side plate, m ₂ : deformation amount signal of spring body, m ₃ : coefficient of space viscosity, etc., Then the object 40
The mass M, the function as the F, M = (t / ( V 1 -
V ₂ )) × F (m ₁ , m ₂ , m ₃ , α).

In the above state, V ₁ , V ₂ , t, α, m
₂ is a measured value or a calculated value, respectively, V ₁ and V ₂ can be obtained by calculation as described above with reference to FIG. 4, and m ₁ and m ₃ are known values. Therefore, t / (V ₂
−V ₁ ) is obtained by calculation, and the function F (m ₁ , m ₂ ,
m ₃ , α) can be obtained, and in the control system shown in FIG. 3, the arithmetic unit 5 can calculate and calculate the mass M of the target object in the container 20 such as a box, that is, the mass 40 of the object 40. The value is displayed on the display device 6. In the above description, the example of the container 20 such as a box has been described. However, the mass of the object can be similarly measured in the containers 21, 22, and 23 such as the boxes.

FIGS. 5A and 5B show the outline of the wiring of the system described above. FIG. 5A is a side view, and FIG. 5B is a view taken along the line CC in FIG. In both figures, each box 20-
23, acceleration sensors 2a to 2d, distance sensors 3a to 3
d from the inside of the box
27, passes through the inside of the rotating shaft 30, passes through the slip ring 7, goes out of the rotating shaft 30, passes through the connector 8, is taken out of the casing 10, and is connected to the arithmetic unit 5, not shown. You.

According to the first embodiment described above, the side plates 1a to 1d are placed in the containers 20 to 23 such as boxes, etc.
The accelerometers 2a to 2d are attached to the side plates, the distance sensors 3a to 3d are attached to the containers 20 to 30 such as boxes, and the object 40 in the box is caused to collide with the side plates 1a to 1d. Thus, the mass of the object 40 can be calculated and obtained, and this can be displayed on the display device 6.

In the first embodiment described above, an example is described in which an acceleration sensor and a distance sensor are provided in a container such as a box. However, pressure sensors, displacement sensors, and acceleration sensors are provided on the side plates 1a to 1d, respectively. If it is arranged, or a sensor unit incorporating these sensors is attached, signals from these sensors are taken, and the mass of the object is calculated by calculating with the control device in the same manner as described above, It can be measured.

FIG. 6 shows a mass measuring apparatus in a microgravity environment according to a second embodiment of the present invention, wherein (a) is a side view, and (b) is a side view when the extruder in (a) is operated. (C) is a view on arrow DD in (a), and (d) is a view on arrow EE in (a). In (a), reference numeral 10 denotes a casing, which comprises a room such as a cabin, a laboratory, a container, a space factory, and the like. 31 is a side plate, and a spring body 34
To the casing 10. 32a, 3
Reference numerals 2b denote position sensors, which are respectively attached to the upper surface of the casing, and are arranged at the initial position for measurement and the position of the side plate 31. An acceleration sensor 33 is attached to the back of the side plate 31. Reference numeral 34 denotes the above-mentioned spring body, which is not shown and has a built-in sensor for measuring the amount of displacement of the spring.

Reference numeral 35 denotes an extruding device disposed at an end of the casing 10, which can push the object 50 toward the side plate 1 by operating the piston 35b to project the extruding plate 35a. Reference numeral 36 denotes a table on which an object 50 whose mass is to be measured is placed.

(B) shows a state in which the extruding device 35 is operated, and shows a state in which the piston 35b is extended, extruding the extruding plate 35a, and extruding the object 50 into the space.
(C) shows a side plate 31. The side plate 31 has an acceleration sensor 33 attached to the center of the back surface, and is attached to the inner wall of the end of the casing 10 at four locations via a spring body 34 almost in parallel. A position sensor 32b is mounted on the upper surface of the side plate 31 on the upper surface of the casing 10. (D) shows an extruding plate 35 a of the extruder 35, and the extruding plate 35 a
5b, the object 50 is pushed out.

FIG. 7 is a control system diagram according to the second embodiment of the present invention. As described in FIG. 6, the acceleration sensor 33 is attached to the inner wall of the casing 10 via the spring body 34 on the side plate 31. The acceleration signal when the object 50 collides with the side plate 31 is input to the arithmetic unit 51.
Further, a signal of the displacement of the spring body at the time of collision is detected by a sensor built in the spring body 34 and input to the arithmetic unit 51. Further, a passing signal detected when the object 50 passes while moving is received from the position sensors 32a and 32b from the arithmetic unit 5 respectively.
1 is input. In addition, when the measurement of the mass of the object is started, the arithmetic unit 51 sends a drive signal to the extruder 35 to control the protrusion of the piston 35b to push out the object 50. The measured mass of the object 50 is displayed on the display device 52.

In the second embodiment having the above structure, when measuring the mass of the object 50, the object 50 is set on the table 6 as shown in FIG. Thereafter, the extruding device 35 is operated, and the extruding plate 35a is protruded to push the object 50 toward the side plate 31 into the space in the casing 10. The object 50 floats in the space and moves in the direction of the side plate 31, and the position sensor 32
a, the passage is detected and further moved to the side plate 31.
Collide with At this time, the arrival of the object 50 on the side plate 31 is detected by the position sensor 32b. The position sensors 32a,
The signal detected by 32b is calculated by the arithmetic unit 51 as shown in FIG.
Is input to

When the object 50 collides with the side plate 31, the side plate 3
1 Acceleration signal at the time of collision detected by the acceleration sensor 33 on the back
Signal and the displacement signal of the spring body 34 at the time of collision are calculated respectively.
Input to the device 51. Here, a description will be given with reference to FIG.
Then, the velocity of the object 50 at the start of measurement: V₁To the side plate 31
Speed at the time of collision: V_Two, Collision from start of measurement of object 50
Time to hour: t, acceleration signal detected by accelerometer 33
No .: α, mass of side plate: m ₁, Displacement amount of the spring body 34:
m_Two, Coefficient of space viscosity, etc .: m_Three, Then the object 50
Is the function F, and M = (t / (V_Two−
V₁)) × F (m₁, M_Two, M_Three, Α), defined as
It is.

In the above state, V ₁ , V ₂ , t, α, m
₂ is a measured value or a calculated value, respectively, and V ₁ is obtained as an average speed from the time from when the extruder 35 is operated to when the position sensor 32a detects the object 50 and the known distance L ₁ , and V ₂ is also Similarly the position sensors 32a, 32b can be determined as the average speed from the time difference t of detecting an object 50, respectively known distance L ₂ Prefecture. The arithmetic unit 5
In the case of 1, since m ₁ and m ₃ are known values, t / (V ₂
−V ₁ ) is obtained by calculation, and the function F (m ₁ ,
m ₂ , m ₃ , α) can also be obtained, and the mass M of the object 50 is calculated by calculation and displayed on the display device 52.

According to the second embodiment described above, in the outer space, the side plate 31 is provided in the casing 10 in the spring body 3.
4, the acceleration sensor 33 is attached to the side plate 31,
Only by attaching the position sensors 32a and 32b to the casing and causing the object 50 to collide with the side plate 31 in the casing 10, the arithmetic unit 51 can calculate and find the mass of the object 50. It is displayed and the mass can be easily grasped.

FIG. 8 shows a mass measuring apparatus in a microgravity environment according to a third embodiment of the present invention, wherein (a) is a side view of the inside, and (b) is a view taken along the line FF in (a). is there.
6A, the configuration of a casing 10, side plates 31, position sensors 32a and 32b, an acceleration sensor 33, and a spring body 34 are the same as those of the second embodiment shown in FIG. 6, and the control system is also the same as that of FIG. It is. In the third embodiment, the weight of a person 53 such as a worker is measured in place of the object 50.
And a stand 37 is provided with a handrail 38 as shown in (b), and the other structure is the same as that of the second embodiment.

In FIG. 8, when measuring the weight of the person 53, the person 53 stands on the table 37a and
8 and use the recoil to make it
Turn back to 1 and jump into space. The human 53 floats in the space by this operation, moves toward the side plate 31, passes through the position sensor 32a, and collides with the side plate 31. The detection signals of the position sensors 32a and 32b at this time are input to the arithmetic unit 51, and the acceleration signal of the acceleration sensor 33 when the human 53 collides with the side plate 31 and the displacement signal of the spring body 34 at the time of collision are also calculated. Input to the device 51.

In the arithmetic unit 51, as in the second embodiment, t / (V ₂ −V ₁ ) is obtained, and the function F (m ₁ , m
₂ , α), the weight M of the person 53 can be calculated and displayed on the display device 52. In the third embodiment, as in the case of the object 50 of the second embodiment, a human 53
Can easily measure and grasp its own weight in space only by colliding with the side plate 31.

[0049]

The object mass measuring system for a microgravity rotating body according to the present invention comprises: (1) a plurality of containers such as boxes which are attached to a rotating shaft, rotate around the rotating shaft, and accommodate an object to which gravity is applied inside; A system for measuring the mass of the object is applied to a microgravity rotating body having a plurality of side plates attached to each side surface of the inside of the container such as each box substantially parallel to the wall surface via a spring body respectively. An acceleration sensor attached to each side plate, a distance sensor for detecting the distance of the object mounted in the container such as the box in close proximity to the side plate corresponding to each side plate, and the object attached to the side plate. A signal of the acceleration sensor at the time of collision, a displacement signal of the spring body at the time of the collision, and an initial position of the object before the collision and a signal of the distance sensor at the position at the time of the collision are input, and based on these signals, It is characterized by comprising an arithmetic unit for calculating the mass of the object by calculation to.

When the mass of an object is measured by the above configuration, the object is caused to collide with any side plate on the inner surface of the box by a method such as instantaneously accelerating the rotation of the rotating shaft. An acceleration signal from an acceleration sensor at the time of a collision, a displacement signal of a spring body at the time of a collision, and a position signal of an object from a distance sensor are respectively input to the arithmetic device, and the arithmetic device receives the object signal based on these signals. Can be easily calculated by calculation in a state where is put in a container such as a box.

According to the measuring system (1) of the present invention, it is not necessary to take out the object in a state where the object is put in a container such as a box. The mass can be easily measured simply by colliding with the inner side plate.

In (2) of the present invention, the arithmetic unit inputs each signal from the pressure sensor, the displacement sensor, and the acceleration sensor,
Since the mass of the object is measured by the same calculation as the invention of the above (1), the mass is measured with higher accuracy as the number of sensors is larger.

In (3) of the present invention, since the result calculated by the arithmetic unit is displayed on the display device, the mass of the object can be easily confirmed when necessary without handling the object. The function of the system of the invention 1) is further improved.

(4) The present invention relates to (1) a side plate attached to one side surface of a cabin, a laboratory, a vessel, a space factory, etc. via a spring body with a displacement sensor, and a side plate attached to the same side plate. The acceleration sensor, the cabin, the laboratory, the container,
A first position sensor disposed in a space factory or the like for detecting an object to be measured having reached the position of the side plate;
A second position sensor that is disposed at a predetermined interval from the position sensor and detects the passage of the object, and the cabin, the laboratory, the container, the space plant, or the like is disposed on the other side, and the object is disposed on the side plate. An extruding device for pushing out, an arrival and passing signal of the object detected by the first and second position sensors, a signal of the acceleration sensor when the object collides with the side plate, and the spring body at the time of the collision And an arithmetic unit for calculating the mass of the object based on these signals.

With such a device, the arithmetic unit can easily calculate the mass of the object based on the detection signal only by causing the object to collide with the side plate, and can grasp the mass of various devices and the object.

In (5) of the present invention, a stand with a handrail is provided in place of the extrusion device of the above (4), so that the weight of a person working in space can be easily grasped in the microgravity space. It was done. The person to be measured grasps the handrail, jumps out toward the side plate, moves toward the side plate, and collides with the side plate, thereby performing the same operation as measuring the mass of the object in the invention (4). The arithmetic unit can calculate the weight based on the first and second position sensors, the displacement signal of the spring body, and the signal of the acceleration sensor.

In (6) of the present invention, since the mass of the object and the weight of the person calculated by the arithmetic unit are displayed on the display device, the functions of the inventions of (4) and (5) are further improved. It is.

[Brief description of the drawings]

FIG. 1 shows a rotating device to which a microgravity rotating object mass measuring system according to a first embodiment of the present invention is applied;
(A) is a side view in a casing, (b) is an AA arrow view in (a).

FIGS. 2A and 2B show a container such as a box to which the object mass measurement system according to the first embodiment of the present invention is applied, wherein FIG. 2A is a top view of the inside, and FIG. It is.

FIG. 3 is a control system diagram of the object mass measuring system for a microgravity rotating body according to the first embodiment of the present invention.

4A and 4B are diagrams showing the principle of an object mass measuring system according to the first embodiment of the present invention, wherein FIG.
(B) is an explanatory diagram of the moving distance of the object.

FIGS. 5A and 5B show the wiring procedure of the object mass measuring system according to the first embodiment of the present invention, wherein FIG. 5A is a side view, and FIG. 5B is a view taken along CC in FIG.

6A and 6B show a mass measuring device in a microgravity environment according to a second embodiment of the present invention, wherein FIG.
(B) is a side view at the time of operation | movement of an extrusion apparatus, (c) is a DD arrow view in (a), (d) is an EE arrow view in (a).

FIG. 7 is a control system diagram of an object mass measuring system for a microgravity rotating body according to a second embodiment of the present invention.

8A and 8B show a mass measuring device in a microgravity environment according to a third embodiment of the present invention, wherein FIG.
(B) is an FF arrow view in (a).

FIG. 9 is a plan view of a conventional rotary experiment apparatus in space.

[Explanation of symbols]

 1a, 1b, 1c, 1d Side plate 2a, 2b, 2c, 2d Acceleration sensor 3a, 3b, 3c, 3d Distance sensor 4 Spring body 5 Calculation device 6 Display device 7 Slip ring 8 Connector 10 Casing 11, 12 Bearing 13 Motor 20- 23 Container such as a box 24 to 27 Arm 31 Side plate 32a, 32b Position sensor 33 Acceleration sensor 34 Spring body 35 Extrusion device 35a, 36 Extruded plate 35b Piston 37 Stand 37a stand 38 Handrail 51 Computing device 52 Display device

Claims (6)

[Claims] 1. A system for measuring a mass of a microgravity rotating body which is attached to a rotating shaft, rotates around the rotating shaft, and has a plurality of containers such as boxes for containing an object to which gravity is added therein. And a plurality of side plates attached to each side surface of the inside of the container such as the box via a spring body substantially in parallel with a wall surface, an acceleration sensor attached to each side plate, and a correspondence with each of the side plates. A distance sensor mounted in the container such as the box in proximity to the side plate to measure a distance to the object; a signal from the acceleration sensor when the object collides with the side plate; A displacement signal and an initial position before the collision of the object and a signal of the distance sensor at the position at the time of the collision, and an arithmetic device that calculates the mass of the object by calculating based on these signals. An object mass measurement system for a microgravity rotating body, comprising: 2. A system for measuring the mass of an object applied to a microgravity rotating body having a plurality of boxes or the like, which is attached to a rotating shaft, rotates about the rotating shaft, and contains an object to which gravity is added therein. A pressure sensor, a displacement sensor, an acceleration sensor, or a plurality of side plates attached substantially in parallel with a wall surface via a sensor unit in which each of the boxes and the like is surrounded by a container, and the object includes: A signal from the respective sensors or a signal from the sensor unit based on a load applied to the side plate, and a calculating device for calculating the mass of the object by calculating based on these signals. Mass measurement system for microgravity rotating bodies. 3. The system according to claim 1, further comprising a display device for displaying a result calculated by the arithmetic device. 4. A cabin, a laboratory, a vessel, a space factory,
And a side plate attached to one side surface via a spring body with a displacement sensor, an acceleration sensor attached to the same side plate,
A first position sensor disposed in the cabin, the laboratory, the vessel, the space factory, or the like, for detecting an object to be measured that has reached the position of the side plate; and a predetermined distance from the first position sensor. A second position sensor arranged to detect the passage of the object; and a cabin, a laboratory, a container, a space factory,
An extruding device disposed on the other side for pushing the object toward the side plate, and an arrival and passing signal of the object detected by the first and second position sensors, when the object collides with the side plate A microgravity rotator, comprising: an arithmetic unit that takes in the signal of the acceleration sensor and the signal of the displacement sensor of the spring body at the time of the collision, and calculates the mass of the object based on these signals. Object mass measurement system. 5. A cabin, a laboratory, a container, a space factory,
And a side plate attached to one side surface via a spring body with a displacement sensor, an acceleration sensor attached to the same side plate,
A first position sensor that is disposed in a cabin, a laboratory, a container, a space factory, or the like and detects a human body to be measured that has reached the position of the side plate, and is disposed at a predetermined interval from the first position sensor. A second position sensor for detecting the passage of the human body, and a stand with a handrail for the cabin, a laboratory, a container, in a space factory, and the like, which is disposed on the other side and for the human body to jump out toward the side plate. The arrival and passage signals of the human body detected by the first and second position sensors, the signal of the acceleration sensor when the human body collides with the side plate, and the signal of the displacement sensor of the spring body at the time of the collision. And a calculating device for calculating the weight of the human body based on these signals. 6. The object mass measuring system for a microgravity rotating body according to claim 4, wherein a result calculated by the arithmetic unit is displayed by providing a display device.