CN104330589A - An instrument for measuring the motion state of an object system - Google Patents

Abstract

The invention discloses an object system motion state tester, which comprises a fixed box body and a cylindrical barrel, wherein a photosensitive layer is arranged on the inner side wall of the cylindrical barrel, a lifting device controls the cylindrical barrel and the photosensitive layer to ascend at a constant speed or descend at a constant speed, a reflecting cone is fixed on the fixed box body through a fixing rod, the lower end of the fixing rod is connected with the tip of the reflecting cone, a parallel light source is arranged at the upper part of the fixed box body and used for projecting parallel light beams to the middle part of the tip of the reflecting cone, the parallel light beams are horizontally reflected by the conical surface of the reflecting cone to obtain reflected light beams, the reflected light beams are emitted to the photosensitive layer to be correspondingly exposed, and the motion state of the object.

Description

An instrument for measuring the motion state of an object system

【Technical field】

The invention relates to an object motion state detection device, in particular to an object system motion state detector.

【Background technique】

At present, in the absence of an external reference system and external information input, it is impossible to obtain the motion state of the system itself inside the closed system, including in what direction and at what speed it moves. An open system can only determine its own motion state, including orientation and speed, through external information and measuring the position of stars. Without external information, the motion state is unknowable. When a spacecraft flies in outer space, if there is no ground signal guidance or other stars for reference, it cannot obtain its own motion state, such as motion direction and speed, and thus cannot determine whether it can reach the destination. If the spacecraft is at the edge of the solar system, it will take several hours for the signal from the ground to reach the spacecraft. Using this device, the spacecraft can obtain its own motion state without the ground signal or star reference.

The present invention studies and proposes aiming at the deficiencies in the prior art.

【Content of invention】

The technical problem to be solved by the present invention is to provide a measuring instrument for the motion state of an object system, which includes a fixed box and a cylindrical tube. The inner wall of the cylindrical tube is provided with a photosensitive layer. The cone is fixed on the fixed box through the fixed rod, the lower end of the fixed rod is connected with the tip of the reflective cone, and the parallel light source is set on the upper part of the fixed box, which is used to project a parallel beam to the center of the tip of the reflective cone, and the parallel beam passes through the reflective cone The reflected light beam is obtained after the horizontal reflection of the body cone surface, and the reflected light beam is directed to the photosensitive layer to expose it accordingly. By analyzing the exposure band obtained on the photosensitive layer, the motion state of the measured object system can be determined.

In order to solve the above-mentioned technical problems, an object system motion state measuring instrument of the present invention adopts the following technical scheme:

The present invention is an instrument for measuring the motion state of an object system, comprising a fixed box and a cylinder, the upper part of the fixed box is fixedly connected with a fixed rod along the vertical direction, and the lower end of the fixed rod is connected with a The reflective cone is arranged coaxially with the cylinder, the tip of the reflective cone is connected with the fixed rod, the upper part of the fixed box is also provided with a parallel light source for projecting a parallel light beam to the center of the reflective cone tip, the inner side of the cylindrical tube The wall is provided with a photosensitive layer for recording the number and position of photons, and the bottom of the fixed box is fixedly connected with a lifting device for controlling the cylinder to rise or fall at a constant speed.

The reflective cone is a right-angled cone.

The photosensitive layer is detachably connected to the inner wall of the cylinder.

The fixed box is a light-tight and openable airtight dark box.

The lifting device is a cylinder, and the output end of the cylinder is fixedly connected with the bottom of the cylinder, and the lifting device can also use other driving mechanisms.

The invention is an instrument for measuring the motion state of an object system. The reflected light beam is irradiated to the photosensitive layer to obtain the corresponding exposure zone. When the exposure band is equal in width, the object system is stationary or its moving direction is parallel to the parallel light beam; when the exposure band has narrow bandwidth and wide bandwidth, the wide bandwidth side is in the same direction as the moving direction of the object system, and the narrow bandwidth side is in the same direction as the object system. The direction of motion of the system is facing away. Correspondingly rotate the object system motion state detector on another plane, two exposure bands can be obtained by measurement, the narrowest bandwidth and the widest bandwidth position are determined on the same exposure band, and the midpoint connecting line between the narrowest bandwidth and the widest bandwidth position It is perpendicular to the axis of the cylinder, and the two connecting lines before and after are straight lines with different planes in space. One of the above-mentioned connecting lines is translated to intersect the other connecting line to determine a plane, which is perpendicular to the moving direction of the object system. The direction perpendicular to this plane and pointing to the position of the widest bandwidth is the direction of motion of the object system. It is convenient for people to confirm the movement direction of the object system in a closed system.

【Description of drawings】

The specific embodiment of the present invention is described in further detail below in conjunction with accompanying drawing, wherein:

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a schematic diagram of the working state of the present invention.

Figure 3 shows the resulting exposure bands on the photosensitive layer with narrow and wide bands.

FIG. 4 is a schematic diagram showing the unfolding of the exposure zone in FIG. 3 .

Fig. 5 is the exposure band obtained on the photosensitive layer, and the bandwidth of the exposure band is uniform.

FIG. 6 is a schematic diagram of the unfolding of the exposure belt in FIG. 5 .

【Detailed ways】

Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

The present invention is an instrument for measuring the motion state of an object system, comprising a fixed box 1 and a cylinder 2, the upper part of the fixed box 1 is fixedly connected with a fixed rod 3 along the vertical direction, and the lower end of the fixed rod 3 is connected with a cylinder extending into it. A reflective cone 4 coaxially arranged in the barrel 2 and cylindrical barrel 2, the tip of the reflective cone 4 is connected to the fixed rod 3, and the upper part of the fixed box 1 is also provided for projecting to the center of the tip of the reflective cone 4 The parallel light source 5 of the parallel light beam 8, the reflective cone 4 is a right-angled cone, so that the parallel light beam 8 emitted by the parallel light source 5 is reflected by the conical surface of the reflective cone 4, and the reflected light beam 9 is perpendicular to the inner wall of the cylinder. The inner wall of the cylinder 2 is provided with a photosensitive layer 6 to receive the photons of the reflected light beam 9 for exposure. The photosensitive layer 6 is detachably connected to the inner wall of the cylinder 2 to facilitate replacement and analysis. The bottom of the fixed box 1 is fixed It is connected with a lifting device 7 for controlling the uniform speed up or down of the cylindrical tube 2. The lifting device 7 is a cylinder, and the output end of the cylinder is fixedly connected with the bottom of the cylindrical tube 2. The lifting device 7 can also use other driving mechanisms. The fixed box The body 1 is a light-tight and openable airtight dark box to prevent the photosensitive layer 6 from being exposed to external light.

The working principle of an object system motion state measuring instrument of the present invention:

During measurement, the object system is relatively static relative to the present invention. First, the photosensitive layer 6 starts to move upward or downward, and then the parallel light source 5 emits a parallel light beam 8, which is centrally projected on the reflective cone 4. The reflected light beam 9 of the parallel light beam 8 is horizontal Shoot to the photosensitive layer 6 in motion. When the moving direction of the object system is parallel to the parallel light beam 8, the photons of the reflected light beam 9 evenly fall on the photosensitive layer 6, and the exposure band 10 with the same bandwidth is obtained by exposure; when the moving direction of the object system forms an angle with the parallel light beam 8, the reflection The photons of the light beam 9 are exposed on the photosensitive layer 6, so that the bandwidth of the exposure zone 10 is inconsistent, and a narrow bandwidth and a wide bandwidth appear. Bandwidth: on the side where the exposure zone 10 is in the same direction as the moving direction of the object system, the exposure area of the photosensitive layer 6 is elongated, resulting in a wide bandwidth.

When a kind of object system motion state detector of the present invention is used, according to the following steps:

1. First, the object system motion state measuring instrument and the object system are kept relatively still, and the lifting device 7 is activated to make the cylinder 2 and the photosensitive layer 6 move upward or downward at a constant speed;

2. Turn on the parallel light source 5 so that the center of the parallel light beam 8 is projected onto the top of the reflective cone 4, the parallel light beam 8 is horizontally reflected by the conical surface of the reflective cone 4, and the reflected light beam 9 evenly shoots on the photosensitive layer 6, reflecting in all directions The number of photons is the same, and the photosensitive layer 6 is exposed correspondingly to the projected area of the reflected light beam 9 to form an exposure zone 10;

3. When the cylinder 2 and the photosensitive layer 6 move to the set position, turn off the parallel light source 5, and after all the photons are received by the photosensitive layer 6, the lifting device 7 stops and resets;

4. As shown in Figure 3, determine respectively the widest and narrowest positions of the bandwidth on the exposure belt 10, i.e. the narrow bandwidth 12 and the wide bandwidth 11, the midpoint between the narrow bandwidth 12 and the wide bandwidth 11 of the connecting line, the connecting line Vertical to the axis of the reflection cone 4 and parallel to the bottom surface of the reflection cone 4; record the position of the line connecting the midpoint of the narrow bandwidth 12 and the midpoint of the wide bandwidth 11.

5. Turn the object system motion state measuring instrument 45° to the widest or narrowest direction of the first exposure zone, and then turn 45° to the midpoint of the connecting line described in step 4, repeat the above steps 1-4, you can get The second exposure zone 10, each exposure zone 10 has a narrow bandwidth 12 and a wide bandwidth 11, and then the connection line described in the second step 4 can be obtained, and its position can be recorded;

6. Translate and intersect the two connecting lines obtained in the two steps 1-5 to determine a plane, which is perpendicular to the moving direction of the object system, and then make a line perpendicular to the plane, which points to the wide bandwidth 11 side, that is is the direction of motion of the object system.

The parallel light beam 8 of the object system motion state measuring instrument at the initial position is consistent with the object system motion direction or when the object system is stationary, the reflected light beam 9 shoots to the bandwidth of the exposure zone 10 obtained by the photosensitive layer 6, as shown in Figure 5, here If it is necessary to determine the current state of motion of the object system, it is necessary to rotate the present invention accordingly to make an angle with the direction of motion of the object system, and perform steps 1-6 to determine the state of motion of the object system; when the present invention is rotated Afterwards, steps 1-3 are carried out, and when the obtained exposure strips 10 are all of the same width, it indicates that the object system is in a static state.

Claims (5)

1. An object system motion state measuring instrument is characterized in that comprising a fixed casing (1) and a cylinder (2), and the fixed casing (1) top is fixedly connected with a fixed rod (3) along the vertical direction, The lower end of the fixed rod (3) is connected with a reflecting cone (4) extending into the cylinder (2) and coaxially arranged with the cylinder (2), and the tip of the reflecting cone (4) is connected with the fixing rod (3). ) connection, the upper part of the fixed box (1) is also provided with a parallel light source (5) for projecting a parallel light beam to the center of the tip of the reflective cone (4), and the inner wall of the cylindrical tube (2) is provided for recording The photosensitive layer (6) that detects the number and position of photons, and the bottom of the fixed box (1) is fixedly connected with a lifting device (7) for controlling the constant speed up or down of the cylinder (2). 2. According to the said a kind of object system motion state detector according to claim 1, it is characterized in that said reflective cone (4) is a right-angled cone. 3. The instrument for measuring the motion state of an object system according to claim 1, characterized in that the photosensitive layer (6) is detachably connected to the inner wall of the cylinder (2). 4. A measuring instrument for the state of motion of an object system according to claim 1, characterized in that said fixed box (1) is a light-tight and openable airtight dark box. 5. According to claim 1 or 2 or 3 or 4 described a kind of object system motion state measuring instrument, it is characterized in that said lifting device (7) is a cylinder, and the output end of the cylinder is fixedly connected with the bottom of the cylinder (2).