JP2023138831A - target system - Google Patents

Abstract

To provide a target system capable of detecting an impact position or an impact velocity more accurately.SOLUTION: The target device comprises a target plate to be a target of a BB bullet fired by a soft air gun, an enclosure for fixing the target plate to allow a vibration like a membrane at an opening when the target plate formed by a soft member for restricting a reaction of the BB bullet receives an impact of the BB bullet by deflecting and a detection part arranged in closed space enclosed at least by the target plate and the enclosure for detecting an impact sound generated when the BB bullet collides with the target plate. Further, the closed space is closed by that a front opening is covered by the target plate and a back opening is covered by closing means in a plate shape. The present technology can be applied to the target device capable of collecting the BB bullet fired by the soft air gun or the like.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to a target system, and particularly to a target system that can more accurately detect the impact position, impact speed, and the like.

Conventionally, when a BB bullet hits a target using a soft air gun, which is a toy gun equipped with a mechanism that fires a plastic bullet (hereinafter referred to as a BB bullet) using low-pressure compressed air, etc. Shooting competitions are held to see how accurately the bullets land. For example, by passing a BB bullet through target paper on which a target is drawn, the impact position on the target paper can be specified.

Furthermore, in Patent Document 1, microphones are attached to the four corners of a transparent sheet arranged to cover the screen of an image display device, and the impact sound when a bullet hits the transparent sheet is detected by the microphone. An apparatus for calculating a landing position on a sheet is disclosed. Additionally, this device does not have a mechanism for recovering bullets.

Japanese Patent Application Publication No. 8-110196

However, in the device disclosed in Patent Document 1 mentioned above, the microphones attached to the four corners of the transparent sheet detect the firing sound when a toy gun is fired, making it difficult to accurately determine the impact position. It was difficult to calculate. That is, in this device, the microphone is placed on the front side of the transparent sheet, and the microphone cannot be sealed to prevent the emitted sound from being detected. The configuration was easy to detect. For this reason, it is difficult to distinguish and process the sound of a toy gun being fired from the impact sound of a bullet hitting a transparent sheet, so bullet impact is detected based on the sound of the bullet. This malfunction sometimes occurred.

The present disclosure has been made in view of this situation, and is intended to prevent malfunctions based on firing sounds and the like, and to more accurately detect the impact position, impact speed, and the like.

A target system according to one aspect of the present disclosure includes a transparent target plate on which a target for firing a flying object is placed on the back side, and a soft member that suppresses repulsion of the flying object. a fixing member for fixing the target plate so as to be able to vibrate like a membrane stretched over an opening when deflecting a collision with the flying object; and a fixing member disposed at least in a space behind the target plate. , a target device having a detection unit that detects an impact sound generated when the flying object collides with the target plate, and at least the front of the space is covered with the target plate.

In one aspect of the present disclosure, the target device includes a transparent target plate on which a target for firing a flying object is placed on the back side, and a target plate formed by a soft member that suppresses repulsion of the flying object. A fixing member that fixes the target plate so that it can vibrate like a membrane stretched over an opening when deflecting a collision with a flying object; and a detection unit that detects an impact sound generated when the target plate collides with the target plate, and at least the front of the space is covered by the target plate.

According to one aspect of the present disclosure, it is possible to prevent malfunctions caused by firing sounds and the like, and more accurately detect the impact position, impact speed, and the like.

FIG. 1 is a perspective view showing a configuration example of an embodiment of a target device to which the present technology is applied. It is a figure explaining the structure of a collection plate. FIG. 3 is a front view of the target device. FIG. 3 is a left side view of the target device. FIG. 3 is a right side view of the target device. 6 is a view of the target device taken along the line AA in FIG. 5. FIG. It is a figure explaining an acoustic sensor. It is a figure explaining an outlet nozzle. FIG. 2 is a diagram showing a first configuration example of a target system including a target device. It is a figure showing the 2nd example of composition of a target system provided with a target device. FIG. 3 is a diagram showing detection results of the impact position in the target system.

Hereinafter, specific embodiments to which the present technology is applied will be described in detail with reference to the drawings.

FIG. 1 is a perspective view showing a configuration example of an embodiment of a target device to which the present technology is applied.

The target device 11 shown in FIG. 1 includes a recovery mechanism that recovers the BB bullet 12 fired toward the target device 11 by a soft air gun, and the impact position and landing speed of the BB bullet 12 when it lands. Equipped with a function to output a detection signal for detecting. In FIG. 1, the path of the BB bullet 12 is shown by a dashed-dotted arrow, and the side where the BB bullet 12 is heading towards the target device 11 (lower right side in FIG. 1) is the front side of the target device 11. The opposite side (upper left side in FIG. 1) is the back side of the target device 11.

Further, on the back side of the targeting device 11, in addition to disposing a target paper that becomes a target when firing the BB bullet 12, a display section that displays a target image similar to the target paper (for example, 9, the monitor unit 122 in FIG. 10, etc.) are arranged. The BB bullet 12 fired toward the target through the target device 11 is reflected or rolled inside the target device 11, and then the BB bullet 12 is placed in a collection case located on the left side when looking from the front of the target device 11. It will be collected on the 13th.

As shown in FIG. 1, the target device 11 includes a housing 21, a front plate 22, a back plate 23, a target plate 24, a collection plate 25, an outlet nozzle 26, acoustic sensors 27-1 to 27-4, and a signal It is configured to include a processing substrate 28.

The housing 21 has upper and lower surfaces and left and right side surfaces formed by assembling a top plate 21a, a right side plate 21b, a left side plate 21c, and a bottom plate 21d, and has a rectangular cylindrical shape with an open front and back sides. The top plate 21a is a plate-shaped member that forms the upper surface of the housing 21, and the right side plate 21b is a plate-shaped member that forms the right side of the housing 21. Further, the left side plate 21c is a plate-shaped member that constitutes the left side surface of the casing 21, and the lower surface plate 21d is a plate-shaped member that constitutes the lower side of the casing 21. In this way, the housing 21 has a structure in which the top plate 21a, the right side plate 21b, the left side plate 21c, and the bottom plate 21d are assembled, so that, for example, the target device 11 can be stored in a space-saving manner.

The front plate 22 is a plate-shaped member attached to the housing 21 so as to cover the vicinity of the lower side of the front opening of the housing 21.

The back plate 23 is a transparent plate-shaped member attached to the housing 21 so as to cover the entire rear opening of the housing 21.

The target plate 24 is, for example, a transparent plate-shaped member that receives the collision of the BB bullet 12 fired by a soft air gun toward a target placed on the back side of the target device 11. For example, the target plate 24 is made of a material that has a predetermined plasticity against impact (a material that recovers slowly), and specifically, a soft vinyl chloride resin with a thickness of 2.0 mm is used. By using such a material, when the target plate 24 receives the collision of the BB bullet 12, it slowly returns to its original shape, so that the repulsion of the BB bullet 12 can be suppressed. The target plate 24 is fixed at its upper and lower ends and at its left and right ends to the inner surface of the housing 21 so that the target plate 24 is flat as a whole, that is, so that it does not bend. In addition, the target plate 24 has an inclination angle of about 10 degrees forward from the vertical as shown in A in FIG. ) inside the casing 21.

The collection plate 25 is a space inside the housing 21 on the front side of the target plate 24 and below the lower end of the front opening of the housing 21 (the upper end surface of the front plate 22). It is arranged in a space and is fixed so as to have an overall slope downward toward the rear side and downward toward the left side.

The discharge port nozzle 26 is attached to the outer surface of the left side plate 21c so as to cover the discharge port formed in the left side plate 21c of the housing 21 (discharge port 34 in A in FIG. 2, which will be described later), and the discharge port nozzle 26 is attached to the outer surface of the left side plate 21c so as to cover the discharge port formed in the left side plate 21c of the housing 21. The BB bullet 12 is guided toward the collection case 13.

The acoustic sensors 27-1 to 27-4 detect the impact sound generated by vibration of the target plate 24 when the BB bullet 12 lands on the target plate 24, and calculate the amplitude of the detected impact sound. An acoustic signal according to the change is supplied to the signal processing board 28. Further, as shown in FIG. 1, the acoustic sensors 27-1 to 27-4 are located near the back side of the target plate 24, and are located close to the four corners of the target plate 24, respectively, on the housing 21. fixed inside. For example, the acoustic sensor 27-1 is arranged near the upper end of the inward facing surface of the left side plate 21c, and the acoustic sensor 27-2 is arranged near the upper end of the inward facing surface of the right side plate 21b. Further, the acoustic sensor 27-3 is arranged near the lower end of the inward facing surface of the left side plate 21c, and the acoustic sensor 27-4 is arranged near the lower end of the inward facing surface of the right side plate 21b.

Here, the space 29 provided on the back side of the target plate 24 in which the acoustic sensors 27-1 to 27-4 are arranged is closed on the front side by the target plate 24, closed on the top and bottom, left and right sides by the housing 21, and closed on the back side by the target plate 24. The back side is closed by a face plate 23. That is, the acoustic sensors 27-1 to 27-4 are arranged in a closed space 29 that is closed from the outside by the housing 21, the back plate 23, and the target plate 24.

The signal processing board 28 is arranged in the space between the bottom plate 21d and the collection plate 25. Then, the signal processing board 28 performs signal processing on the acoustic signals output from the acoustic sensors 27-1 to 27-4 when the BB bullet 12 lands on the target plate 24. It outputs a detection signal to detect the impact position and impact velocity when the bullet hits the target.

For example, the signal processing board 28 amplifies the acoustic signal, performs full-wave rectification, and generates a peak hold signal that maintains the peak value of the amplitude, and a signal obtained by integrating the peak hold signal that exceeds a reference value. An impact sound detection time signal indicating the timing is output as a detection signal. The signal processing board 28 then supplies a detection signal to the personal computer 111 in FIG. 9, which will be described later, or the notebook personal computer 121 in FIG. 10.

The target device 11 is configured as described above, and the BB bullet 12 fired toward the target device 11 collides with the target plate 24, as shown by the dashed line in FIG. At this time, the target plate 24 has a predetermined plasticity against the impact as described above, and the area of the target plate 24 corresponding to the impact force is recessed into an extremely shallow cone shape around the impact point, so that the BB The impact caused by the collision of the bullet 12 is absorbed. Hereinafter, such denting of the impact absorbing material 33 of the target plate 24 and the collection plate 25 (see FIG. 2, which will be described later) will be referred to as being bent. The BB bullet 12, whose impact due to the collision has been absorbed by the target plate 24, falls toward the collection plate 25, and rolls toward the back side and left side within the target device 11 according to the inclination of the collection plate 25. After that, it is discharged from the discharge port of the left side plate 21c, passes through the discharge port nozzle 26, and is collected in the collection case 13.

In this way, the target device 11 is configured such that the target plate 24 can absorb the impact of the BB bullets 12 and the BB bullets 12 fall toward the collection plate 25, so that the BB bullets 12 The BB bullet 12 can be reliably collected without jumping out of the casing 21.

Further, as described above, in the target device 11, the acoustic sensors 27-1 to 27-4 are arranged in the closed space 29, and the acoustic environment in the closed space 29 is constant.
Therefore, in the target device 11, the acoustic sensors 27-1 to 27-4 detect impact sounds with higher reproducibility, that is, if the impact sound of the BB bullet 12 is the same, the impact sound is almost the same. impact sound can be detected.

That is, the target device 11 has a configuration in which the rear opening of the closed space 29 is covered by the back plate 23 and the front opening thereof is covered by the target plate 24. As a result, in the target device 11, like a musical instrument (for example, a drum or timpani) that produces sound by the vibration of a membrane stretched over the opening, the target device 11 can generate a reproducible impact by the vibration when the BB bullet 12 collides with the target plate 24. A sound is generated.

Therefore, for example, when the BB bullet 12 lands on a predetermined location on the target plate 24, the acoustic sensors 27-1 to 27-4 always perform The same impact sound can be detected. Thereby, based on the acoustic signals output from the acoustic sensors 27-1 to 27-4, the impact position, which is the position on the target plate 24 where the BB bullet 12 landed, and the position of the BB bullet when it landed on the target plate 24 are determined. 12 (or the energy of the BB bullet 12 when it hits the target plate 24), etc. can be detected very accurately.

Further, in the target device 11, the acoustic sensors 27-1 to 27-4 are arranged in the closed space 29, so that, for example, the firing sound when firing the BB bullet 12 with a soft air gun is transmitted to the acoustic sensor 27-1. 27-4 can be avoided. For example, if the acoustic sensors 27-1 to 27-4 are arranged in an open space, the acoustic sensors 27-1 to 27-4 will detect the sound of a soft air gun being fired. In this case, it is necessary to exclude the firing sound from the acoustic signals output from the acoustic sensors 27-1 to 27-4, and it is difficult to accurately calculate the impact position, impact speed, etc.

On the other hand, since the target device 11 has a configuration in which the acoustic sensors 27-1 to 27-4 are difficult to detect the firing sound of the soft air gun, the Processing to exclude the emitted sound from the signal becomes unnecessary. Therefore, based on the acoustic signals output from the acoustic sensors 27-1 to 27-4, it is possible to accurately calculate the landing position, landing speed, etc. of the BB bullet 12.

Furthermore, by using the target plate 24 that functions like the membrane of a musical instrument, the target device 11 has a structure in which the acoustic sensor 27 -1 to 27-4 can accurately detect impact sounds. That is, in a configuration in which a polycarbonate plate, an acrylic plate, or the like is used as a target plate, vibrations transmitted through the target plate itself may be detected, making it difficult to accurately detect impact sound. On the other hand, in the target device 11, the vibration transmitted through the target plate 24 itself is attenuated, so the acoustic sensors 27-1 to 27-4 accurately detect the impact sound transmitted in the air by the vibration of the target plate 24. can be detected.

Furthermore, the target device 11 can have the effect of being able to reduce impact noise (become quieter) compared to a configuration in which a polycarbonate plate, an acrylic plate, or the like having higher rigidity is used for the target plate. By the way, as a result of the reduction in the impact sound, the firing sound becomes relatively louder, there is a concern that malfunctions based on the firing sound will increase. However, as described above, since the acoustic sensors 27-1 to 27-4 are arranged in the closed space 29, the target device 11 has the effect of blocking external disturbances such as firing sound. As a result, it is possible to obtain the effect of measuring the sound pressure which is tripled by confining the impact sound in the closed space 29. As a result, for example, the disturbance blocking effect that prevents malfunctions due to disturbances such as firing sound can be estimated by comparing with the device disclosed in Patent Document 1, and the acoustic sensors 27-1 to 27-4 are arranged. It is assumed that by making the space closed, the effect of blocking disturbances will be about 3 times higher, and by trapping the impact sound in the closed space, the sound pressure will increase, which will have a disturbance blocking effect of about 3 times, and if you look at these in total, it will be about 9 times more effective. can be expected to have a disturbance blocking effect. Furthermore, by arranging the acoustic sensors 27-1 to 27-4 in the closed space 29, the BB bullet 12 will not collide with the acoustic sensors 27-1 to 27-4, and such Failure of the acoustic sensors 27-1 to 27-4 due to a collision is also avoided.

Further, in the target device 11, by arranging the acoustic sensors 27-1 to 27-4 in the closed space 29, it is possible to eliminate disturbances caused by surrounding sounds in addition to the firing sound of the soft air gun. For example, compared to a configuration in which the back plate 23 is removed from the housing 21 and the acoustic sensors 27-1 to 27-4 are placed in an open space, the acoustic sensors 27-1 to 27-4 are placed in a closed space 29. 4, the measurement sensitivity with which the acoustic sensors 27-1 to 27-4 measure impact sound is improved (for example, by about three times). As a result, for example, the noise resistance is improved by lowering the gain, and the difference in detection values for each of the acoustic sensors 27-1 to 27-4 depending on the distance to the impact position is reduced, and the acoustic The measurement accuracy based on the signal can be improved. Note that the space 29 only needs to be able to block out sounds from the outside to some extent, and unlike a closed space that is completely cut off from the outside, there may be some gap. Of course, it is more preferable if the space 29 is completely isolated from the outside.

By the way, it is assumed that the BB bullets 12 that fall toward the collection plate 25 after being reflected by the target plate 24 will bounce back to some extent on the collection plate 25. The structure is designed to suppress bounce back.

The structure of the collection plate 25 will be described with reference to FIG. 2.

FIG. 2 shows a schematic configuration example in which the lower part of the target device 11 is enlarged. 2A is a configuration example of the target device 11 viewed from the left side, FIG. 2B is a configuration example of the target device 11 viewed from the front side, and FIG. 2C is a configuration example of the target device 11 viewed from the right side. This is an example of the configuration I saw.

As shown in FIGS. 2A and 2C, the collection plate 25 has an inclined portion that descends from the front plate 22 toward the rear plate 23 at an inclination angle of 6.0°, and near the rear end of the collection plate 25. A predetermined range (for example, a range of 10 mm from the rear end) has a shape with no longitudinal slope. In other words, the collection plate 25 is formed by bending so that the inclined portion on the front side forms an angle of 6.0° with respect to a predetermined range of portion near the rear end. Further, as shown in FIG. 2B, the collection plate 25 is fixed to the housing 21 so as to be inclined downward from the right side plate 21b toward the left side plate 21c at an inclination angle of 2.7°. In this way, the collection plate 25 is formed so that the BB bullet 12 can roll smoothly from the right side plate 21b toward the left side plate 21c by providing a portion near the rear end that is not inclined forward or backward. be done.

The collection plate 25 is constructed by laminating shock absorbing materials 32 and 33 made of different materials on a plate member 31 that has been subjected to such bending processing. For example, the plate member 31 uses a thin iron plate with a thickness of 0.6 mm, the shock absorber 32 uses a urethane sponge with a thickness of 3.0 mm, and the shock absorber 33 uses a soft plate with a thickness of 2.0 mm. Polyvinyl chloride resin is used.
In this way, for example, by arranging the shock absorber 32 made of urethane sponge between the plate member 31 and the shock absorber 33, a state in which the shock absorber 33 is floating with respect to the plate member 31 can be achieved. Therefore, the energy of the falling BB bullet 12 can be absorbed by the impact absorbing material 33 being bent. Specifically, when a BB bullet 12 of up to about 0.3J lands on a shock absorber 33 made of soft vinyl chloride resin (hardness #570) with a thickness of 2.0 mm, the dent that occurs in the shock absorber 33 is within 3 mm. Since it is certain that the energy of the BB bullet 12 whose energy is attenuated by the collision with the target plate 24 is 0.3 J or less, it is confirmed that the collection plate 25 can sufficiently absorb the impact of the BB bullet 12. confirmed.

That is, by having such a laminated structure, the collection plate 25 can absorb the energy of the BB bullet 12 that is reflected by the target plate 24 and suppress the rebound of the BB bullet 12, so that the BB bullet 12 can be prevented from rebounding. The bullet 12 will roll according to the inclination of the collection plate 25. In addition, since the collection plate 25 is inclined downward toward the rear side, even if the BB bullet 12 bounces off the collection plate 25, the BB bullet 12 will head toward the rear side, and the housing It is prevented from jumping out from the front opening of 21. Note that rotation remains even in the BB bullet 12 whose energy has been attenuated by the collision with the target plate 24, so the rotation causes the BB bullet 12 to jump diagonally downward or violently roll around on the collection plate 25. There is. On the other hand, since the collection plate 25 is entirely surrounded by the right side plate 21b, left side plate 21c, front plate 22, and target plate 24, the BB bullets 12 rolling around on the collection plate 25 are It is prevented from jumping out from the front opening.

Therefore, the target device 11 can reliably collect the BB bullet 12 in the limited space within the housing 21. Thereby, the target device 11 can be downsized, and manufacturing costs can be reduced. For example, the housing 21 of the target device 11 is designed to have a height of approximately 25.3 cm and a width of 38.6 cm when viewed from the front side. In addition, the target device 11 can keep the height of the front plate 22 as low as about 4.3 cm, and can collect the BB bullets 12 in the area hidden by the front plate 22 when viewed from the front. A substrate 28 can be placed. By keeping the height of the area required to collect the BB bullet 12 (collection area) low in this way, it is possible to use the notebook personal computer 121 as described later with reference to FIG. 10, for example. It can be done.

Further, as shown in FIGS. 2A and 2B, an opening 34 for discharging the BB bullet 12 to the outside is formed in the left side plate 21c. The opening 34 is opened in consideration of the thickness of the collection plate 25, and the lower end of the opening 34 is opened with the left end of the rear end portion of the collection plate 25 in contact with the bottom plate 21d. It is formed at a position that is higher than the lower surface plate 21d by the thickness of the plate 25. Further, the end of the opening 34 on the back side is formed so as to substantially coincide with the surface of the target plate 24 facing the front side.

The opening 34 is formed in this way, and the BB bullets 12 that have rolled toward the back side and the left side according to the inclination of the collection plate 25 are ejected from the opening 34, as described above with reference to FIG. As such, it passes through the discharge port nozzle 26 and is collected into the collection case 13.

As shown in FIGS. 2A and 2C, the front end of the plate member 31 is bent downward, and this bending shape causes the plate member 31 to flex. is prevented from occurring. Further, as shown in FIG. 2A, the lower left rear end of the plate member 31 is arranged so as to be in contact with the lower surface plate 21d, and the target plate 24 is fixed at an inclination angle of 10° with respect to the vertical. Ru.

Next, the detailed configuration of the target device 11 will be described with reference to FIGS. 3 to 6.

3 shows a front view of the target device 11, FIG. 4 shows a left side view of the target device 11, and FIG. 5 shows a right side view of the target device 11. FIG. 6 shows a view taken along the line AA in FIG. 5.

As shown in FIGS. 3 to 6, in the target device 11, the target plate 24 is attached planarly inside the housing 21 using fixing members 41a to 41d that fix the four sides of the target plate 24.

The fixing member 41a is attached to the inner surface of the top plate 21a so as to extend in the left-right direction, and the fixing member 41b is attached to the inner surface of the right side plate 21b so as to extend along the inclination angle of the target plate 24. The fixing member 41c is attached to the inner surface of the left side plate 21c so as to extend along the inclination angle of the target plate 24, and the fixing member 41d is attached to the inner surface of the lower surface plate 21d so as to extend in the left-right direction.

For example, as shown in FIG. 5, two screw holes are formed in the fixing member 41b, and the fixing member 41b is attached to the inner surface of the right side plate 21b using screws from the outside of the right side plate 21b. It is attached. Note that, as shown in FIG. 5, a connector 43 for connecting a signal cable to be connected to the signal processing board 28 is arranged on the right side plate 21b.

Further, as shown in FIG. 4, two screw holes are formed in the fixing member 41c, and the fixing member 41c is attached to the inner surface of the left side plate 21c using screws from the outside of the left side plate 21c. It is attached. Similarly, screw holes (not shown) are formed in the fixing members 41a and 41d, and they are attached to the upper surface plate 21a and the lower surface plate 21d from outside using screws, respectively.

The upper side of the target plate 24 is fixed to the fixing member 41a from the front of the housing 21 using screws. Similarly, the right side of the target plate 24 is fixed to the fixing member 41b using screws from the front of the housing 21, and the left side of the target plate 24 is fixed to the fixing member 41c using screws from the front of the housing 21. It is fixed using. Further, the lower side of the target plate 24 is fixed to the fixing member 41d from the rear of the housing 21 using screws.

Furthermore, in the target device 11, the front end portion of the top plate 21a is bent inward to form an inclined surface, thereby forming a bent portion 42a at the front end of the top plate 21a. The bent portion 42a of the top plate 21a is formed, for example, so that the fixing member 41a is hidden when the target device 11 is viewed from the front.

Similarly, by bending the front end portion of the right side plate 21b inward to form an inclined surface, a bent portion 42b is formed at the front end of the right side plate 21b so that the fixing member 41b is hidden when viewed from the front. Ru. Further, by bending the front end portion of the left side plate 21c inward to form an inclined surface, a bent portion 42c is formed at the front end of the left side plate 21c so that the fixing member 41c is hidden when viewed from the front. .

In this manner, in the target device 11, the bent portions 42a to 42c are formed on the upper side and left and right sides of the front opening of the housing 21, so that the BB bullet 12 can be directly attached to the fixed members 41a to 41c. collision can be avoided. Further, the bent portions 42a to 42c form inclined surfaces toward the inside of the casing 21, so that when the BB bullet 12 collides with the bent portions 42a to 42c, it is reflected toward the inside of the casing 21. Then, the BB bullet 12 can be collected at the target device 11.

As described above, the target device 11 is arranged such that the four sides of the target plate 24 are fixed by the fixing members 41a to 41d, and the target plate 24 is stretched in the space inside the housing 21, so that the target plate 24 is fixed to the target plate 24. The structure is such that the target plate 24 is bent when the BB bullet 12 collides with it. Thereby, in the target device 11, the kinetic energy of the BB bullet 12 can be effectively absorbed by the target plate 24. Furthermore, as described above, by arranging the collecting plate 25 below the front side of the target plate 24, the targeting device 11 can reliably collect the BB bullets 12 in a minimum space.

Next, the acoustic sensor 27 will be explained with reference to FIG.

As shown in FIG. 7, the acoustic sensor 27 is fixed to one end of the board 51, and the other end of the board 51 is used for connecting a cable (not shown) for transmitting an acoustic signal to the signal processing board 28. A connector 52 is fixed. Then, the board 51 is fixed to the housing 21 via the spacer 54 using two screws 55-1 and 55-2 and two nuts 56-1 and 56-2.

Further, a sensitivity adjustment damping layer 53 made of a film having a predetermined thickness is attached to the acoustic sensor 27. By attaching the sensitivity adjustment damping layer 53 to the acoustic sensor 27, the sensitivity of the acoustic sensor 27 can be adjusted by attenuating the impact sound that reaches the acoustic sensor 27.

Therefore, in the target device 11, the sensitivity adjustment damping layer 53 is adjusted so that the volume of the impact sound generated when the BB bullet 12 lands on the target plate 24 is within the range of the volume detectable by the acoustic sensor 27. By adjusting the thickness, the acoustic sensor 27 can reliably detect impact sounds. For example, the thickness of the sensitivity adjustment damping layer 53 is adjusted so that the average level of the impact sound when the BB bullet 12 hits the center of the target plate 24 is at the center of the sound volume range that can be detected by the acoustic sensor 27. By making adjustments, impact sounds can be detected better. Thereby, in the target device 11, the acoustic sensor 27 can reliably detect the impact sound, and can output a detection signal that can more accurately detect the impact position, impact speed, and the like.

Next, the discharge port nozzle 26 will be explained with reference to FIG.

The discharge nozzle 26 is formed by bending a steel plate with a thickness of 0.6 mm, for example, and is formed into a rectangular cylindrical shape having an inner dimension comparable to that of the opening 34 formed in the left side plate 21c.
Further, the end of the outlet nozzle 26 on the side where the outlet nozzle 26 is attached to the left side plate 21c is open toward the length direction of the outlet nozzle 26, and the end on the opposite side is opened downward toward the tip. An inclined surface 26a is formed, and an opening 26b is formed on the lower surface of the discharge port nozzle 26 at the end thereof.

Therefore, the BB bullet 12 that has passed through the opening 34 of the left side plate 21c passes through the cylindrical discharge nozzle 26 and is reflected downward by the inclined surface 26a, as shown by the dashed line in FIG. and is discharged from the opening 26b.

In this manner, in the target device 11, by providing the discharge port nozzle 26, for example, even if the momentum of the BB bullet 12 is not sufficiently decelerated before passing through the opening 34, it is reflected on the inclined surface 26a. Since the BB bullet 12 is directed downward, the BB bullet 12 can be reliably collected by the collection case 13.

Next, FIG. 9 is a diagram showing a first configuration example of a target system including the target device 11.

As shown in FIG. 9, the target system 101 is configured such that an external monitor 112 that displays a screen similar to that of a personal computer 111 is placed on the back side of the target device 11. Further, a signal cable 113 can be connected to a connector 43 disposed on the right side plate 21b of the target device 11, and the personal computer 111 and the target device 11 are connected via the signal cable 113. Furthermore, the personal computer 111 and external monitor 112 are connected via a video cable 114.

Further, the target device 11 is attached with a plurality of legs 116 having adjusters that can adjust the placement position of the target device 11 in the height direction. It is arranged so that the height matches the position of the screen 112. In this way, the target device 11 is lifted from the plane on which the external monitor 112 is placed by the plurality of legs 116, and the BB bullet 12 is prevented from entering the space below the target device 11. A protection plate 117 is attached to the front leg portion 116 of the target device 11 to protect the target device 11 from the target device 11.

The external monitor 112 displays a target image 115 that is the target when firing the BB bullet 12, and the target image 115 is displayed from the front side of the targeting device 11 through the transparent target plate 24 and the back plate 23. It is said to be visible.

In the display example shown in FIG. 9, a scoreboard is displayed on the external monitor 112 on the right side of the target image 115, on which shooting results such as operations and scores are posted, and the user does not have to take his/her line of sight far away while shooting. The user can confirm the shooting result without using the personal computer 111, which is more convenient than checking the shooting result on the personal computer 111, for example. Note that, for example, the user can hide unnecessary items on the external monitor 112 or display the target image 115 on the entire external monitor 112. Further, in the case of a moving target in which a small target image is moved and displayed, it is preferable that the target image move across the entire screen of the external monitor 112 so that the target image moves around as wide a range as possible.

Further, in the target system 101, the acoustic signals output from the acoustic sensors 27-1 to 27-4 of the target device 11 are subjected to signal processing by the signal processing board 28 and supplied to the personal computer 111 as detection signals. The personal computer 111 performs calculations based on the detection signal supplied from the signal processing board 28 by executing application software for shooting. For example, the personal computer 111 can determine the impact position, which is the position on the target plate 24 at which the BB bullet 12 landed, the impact velocity, which is the speed of the BB bullet 12 when it landed on the target plate 24, and the impact position, which is the position on the target plate 24 where the BB bullet 12 landed, the impact velocity, which is the speed of the BB bullet 12 when it landed on the target plate 24, Calculate the energy of BB bullet 12 at the time of the attack.

For example, the personal computer 111 calculates the impact position at which the BB bullet hits the target plate 24 based on the impact sound detection time signal supplied as a detection signal from the signal processing board 28 . Furthermore, the personal computer 111 calculates the bullet velocity and energy when the BB bullet hits the target plate 24 based on the peak hold signal supplied as a detection signal from the signal processing board 28 . Then, the personal computer 111 displays a landing mark (see FIG. 11) indicating the spot where the BB bullet 12 has landed, corresponding to the landing position in the target image 115 displayed on the external monitor 112, every time a bullet is detected. do. The personal computer 111 also displays scores based on the impact position, as well as the impact speed and energy of the BB bullet 12 on a scoreboard on the right side of the target image 115 on the external monitor 112. Further, the scoreboard displayed on the external monitor 112 may display only the elapsed time and the score.

In this way, in the target system 101, the bullet impact mark is displayed on the target image 115 every time a target is shot, so the user can experience more realistic target shooting, and can easily find the next target. Aiming correction can be done naturally. Furthermore, in the targeting system 101, the user's convenience can be further improved by displaying the score based on the impact position, the impact speed and energy of the BB bullet 12 on the external monitor 112. Note that only one of the impact speed and energy may be determined and displayed.

Next, FIG. 10 is a diagram showing a second configuration example of a target system including the target device 11.

As shown in FIG. 10, in the target system 101A, the monitor section 122 of the notebook personal computer 121 is arranged on the back side of the target device 11, and the keyboard section 123 of the notebook personal computer 121 is arranged below the target device 11. It consists of Further, a signal cable (not shown) can be connected to a connector 43 disposed on the right side plate 21b of the target device 11, and the notebook personal computer 121 and the target device 11 are connected via the signal cable. Further, in the target system 101A, legs 118 extending forward are used so that the protection plate 117 can be placed in front of the keyboard section 123 of the notebook personal computer 121.

In the target system 101A, similarly to the target system 101 in FIG. It can be performed. Then, on the monitor unit 122 of the notebook personal computer 121, the impact mark is displayed at the impact position in the target image 115, the score based on the impact position, and the impact speed and energy of the BB bullet 12 are displayed. You can

In the display example of FIG. 10, the monitor unit 122 displays a scoreboard on the right side of the target image 115 on which shooting results such as operations and scores are posted. For example, if the scoreboard is hidden, The target image 115 can be displayed on the entire monitor section 122. In this case, in order to avoid difficulties in operation and score confirmation, only the scoreboard can be displayed in an independent sub-window. For example, by displaying a scoreboard on a sub-monitor, tablet PC, smartphone, etc., the user can check the shooting results at hand, which can further improve convenience.

For example, since the target image 115 is displayed in a large size that occupies more than half of the monitor unit 122, it is possible to move away from the target system 101A within an operable distance (for example, about 10 m) using a wireless mouse or the like. You can perform operations from any position. Specifically, it is possible to adopt an operation in which left-clicking the target image 115 causes the competition to start, and left-clicking the target image 115 again after the competition has started causes the competition to stop. Furthermore, when the target image 115 is right-clicked, the target image 115 is displayed on the full screen of the monitor unit 122, and when the target image 115 is right-clicked again while the target image 115 is displayed on the full screen, the target image 115 is reduced and displayed on a scoreboard, etc. It is possible to employ an operation that causes the display state to be displayed (display state as shown in FIG. 10). Alternatively, when it is detected that the BB bullet 12 has collided with the target board 24 while waiting for the start of the competition, an operation may be adopted in which the competition is started.

In the target systems 101 and 101A configured as described above, acoustic sensors 27-1 to 27-4 are arranged in the closed space 29 of the target device 11. Therefore, the personal computer 111 and the notebook personal computer 121 can more accurately calculate the impact position, impact speed, etc. of the BB bullet 12 using the detection signal output from the signal processing board 28 of the target device 11. can.

In this embodiment, a configuration has been described in which the external monitor 112 in FIG. 9 and the monitor unit 122 in FIG. 10 are arranged on the back side of the target device 11. The signal processing board 28 may also be used, and a thin display section such as a liquid crystal panel may be installed or fixed to the target device 11 so that the target device 11 can operate independently without being connected to the personal computer 111 or the like. The display section can be configured to be attached to the housing 21 instead of the back plate 23. Alternatively, the display unit may be fixed behind the back plate 23 with the back plate 23 provided. Furthermore, for example, by removing the back plate 23 from the target device 11 and arranging the display section so as to be in contact with the back surface of the target device 11, the closed space 29 can be configured using the display section. It's okay. In this way, the method of installing the display section on the target device 11 is not limited to the embodiment described above.

Further, the target device 11 may have a configuration in which a tablet-type personal computer is installed (internally or attached) on the back side of the housing 21, and the target image 115 and the scoreboard can be displayed on the tablet-type personal computer. I can do it. In this case, for example, instead of a configuration that requires connection to a personal computer 111 as shown in FIG. 9, it is possible to realize a target system that can operate by the target device 11 alone.

In the target device 11, which is configured to be able to operate independently, the user uses a smartphone, a glasses-type terminal, a dedicated remote controller, a personal computer, etc., to connect wirelessly using a wireless LAN (Local Area Network), etc. operations can be performed. Thereby, when using the target device 11, convenience can be further improved.

The target system 101 also includes an output unit such as a speaker that outputs arbitrary sound (for example, impact sound, destruction sound, scream, music, etc.) depending on at least one of the impact point, impact speed, or energy. be able to. Furthermore, those sounds can be outputted from the output unit at a volume based on at least one of the landing speed and energy. Thereby, it is possible to enhance the playability of shooting using the target system 101. In addition, the score corresponding to the point of impact can be read out aloud. Thereby, the user can know the obtained score without taking his eyes off the target image 115.

Furthermore, the display method for displaying the target image 115 is not limited to a display unit such as a liquid crystal panel. For example, the back plate 23 or the target plate 24 may be made of an opaque plate, coated with white or other paint, affixed with white or other cloth, or placed in front or behind the back plate 23 so that the projector can A method of projecting the target image 115 can be adopted.

Here, with reference to FIG. 11, the detection results of the impact positions in the target systems 101 and 101A will be described.

11A shows a target image 115A representing the calculation result of the impact position in a state where the back plate 23 is fixed to the housing 21 and the acoustic sensors 27-1 to 27-4 are arranged in the closed space 29. It is shown. In FIG. 11B, the back plate 23 is removed from the casing 21, and the acoustic sensor 27-1 is placed in an open space with the back plate 23 placed at a distance of 20 mm from the casing 21, for example. A target image 115B representing the detection result of the impact position in a state where the bullets 27-4 to 27-4 are arranged is shown.

11A and 11B, for example, the soft air gun is fixed so as to maintain a predetermined height, and the soft air gun is fixed at a predetermined height, and the air gun is sequentially moved from the left side to the right side with respect to the target device 11 at regular intervals (for example, 1 cm intervals). , the impact position when the BB bullet 12 is fired toward the target device 11 is shown.
For example, in the display example of A in FIG. 11, the first to 33rd impact positions are indicated by impact marks using circles with respective numbers. In the display example shown in FIG. 11B, the fourth to 28th impact positions are indicated by impact marks using circles with respective numbers.

As shown in FIG. 11A, when the acoustic sensors 27-1 to 27-4 are arranged in the closed space 29, the impact position is horizontally at a substantially constant height throughout the target image 115A. The result is that they line up in a line in the direction. That is, as a result of firing the BB bullet 12 from a soft air gun fixed to maintain a predetermined height, the impact position is calculated to be at a constant height on the target image 115A within a predetermined error range. There is.

On the other hand, as shown in FIG. As a result, the landing positions generally vary in the vertical direction. In particular, in the target image 115B, while it was possible to detect the 4th to 27th bullets, it was not possible to accurately detect the bullets near the left and right ends, that is, the 1st to 3rd and 29th bullets. As a result, the 28th bullet was erroneously detected because the 33rd bullet from the 33rd bullet could not be detected.

For example, in the target systems 101 and 101A, by repeatedly firing the BB bullets 12 at predetermined intervals (for example, 1 cm intervals) over the entire surface of the target plate 24, and referring to the database of measurement data obtained as a result, Calculations are performed to measure the landing position and landing speed of the BB bullet 12. Therefore, it is important to ensure reproducibility between the impact sound when obtaining measurement data and the impact sound when measuring the impact position and impact speed of the BB bullet 12. Therefore, in the target device 11, better reproducibility can be obtained by arranging the acoustic sensors 27-1 to 27-4 in a closed space 29 where the acoustic environment is constant. .

As described above, in the target systems 101 and 101A, the acoustic sensors 27-1 to 27-4 are arranged in the closed space 29, and the acoustic sensors 27-1 to 27-4 are arranged in the open space. The accuracy of measuring the impact position can be improved compared to the configuration in which the impact position is measured.
Similarly, with regard to the landing speed of bullets, the measurement accuracy can be improved by arranging the acoustic sensors 27-1 to 27-4 in the closed space 29.

By the way, since the speed of sound changes depending on the temperature, the target device 11 can be configured to include a temperature sensor. In this configuration, the signal processing board 28 corrects the sound speed based on the temperature information detected by the temperature sensor, and calculates the impact point using the corrected sound speed, thereby determining the impact position with higher accuracy. be able to. Here, by arranging the temperature sensor included in the target device 11 in the closed space 29 similarly to the acoustic sensors 27-1 to 27-4, the speed of sound in the space 29 can be accurately used. The landing position can be accurately measured based on the impact sound detected by the acoustic sensors 27-1 to 27-4. For example, if the sensitivity of the acoustic sensors 27-1 to 27-4 is affected by temperature, the amplification degree of the acoustic sensors 27-1 to 27-4 is corrected based on the temperature information detected by the temperature sensor. By doing so, it is possible to further improve the measurement accuracy of the impact position, impact speed, energy, etc.

In addition, in this embodiment mentioned above, in the target device 11, the target board 24 is fixed so that it may incline with respect to perpendicular|vertical, but the target board 24 does not necessarily need to be fixed in an inclined manner. For example, by tilting the target plate 24, the BB bullets 12 are reflected downward, making it easier to collect the BB bullets 12. On the other hand, for example, even if the target plate 24 is fixed vertically, the width of the housing 21 in the front and rear direction is ensured to be sufficient to prevent the BB bullets 12 reflected from the target plate 24 from flying out. By doing so, the BB bullet 12 can be reliably recovered. Further, in this embodiment, a configuration using four acoustic sensors 27-1 to 27-4 has been described, but the number of acoustic sensors 27 is not limited to four. For example, depending on the size or shape of the target device 11, a number of acoustic sensors 27 such as three, six, or eight that can appropriately measure the landing position and the like can be used.

Note that in this specification, the system refers to the entire device configured by a plurality of devices. Further, the embodiments of the present invention are not limited to the embodiments described above, and various changes can be made without departing from the gist of the present invention.

For example, the present invention is not limited to the target system 101 that is the target of the BB bullet 12 fired by a soft air gun, but is applicable to any competition or game in which a flying object is hit against a target, specifically, darts. , may be applied to targeting systems such as blowguns. In this case, the hit position where the dart or blowgun hits can be accurately detected, and the dart or blowgun arrow may be displayed at the hit position on the target image instead of the impact mark. Naturally, it is necessary to round off the tips of darts and blowgun arrows instead of BB bullets so that they do not pierce the target plate 24. In addition, when such a flying object is used, instead of the collection plate 25, a collection unit such as a basket for collecting the flying object that has bounced off the target plate 24 can be provided.

Furthermore, by increasing the strength of the target plate 24, the present invention can also be applied to a target system for a real gun (air gun, etc.), which has stronger energy upon impact than a toy gun (soft air gun).

11 Target device, 12 BB bullet, 13 Recovery case, 21 Housing, 21a Top plate, 21b Right side plate, 21c Left side plate, 21d Bottom plate, 22 Front plate, 23 Rear plate, 24 Target plate, 25 Collection plate, 26 discharge port nozzle, 27 acoustic sensor, 28 signal processing board, 31 plate member, 32 and 33 shock absorber, 34 opening

Claims (7)

A transparent target plate where the target for firing a flying object is placed on the back side,
When the target plate formed of a soft member that suppresses the repulsion of the flying object deflects and receives the collision of the flying object, the target is configured to vibrate like a membrane stretched over an opening. A fixing member that fixes the board;
a detection unit disposed in at least a space behind the target plate and detecting an impact sound generated when the flying object collides with the target plate;
A targeting system, wherein at least the front of the space is covered by the target plate. Signal processing is performed on the acoustic signal output in response to the impact sound detected by the detection unit, and the impact position at which the flying object lands on the target plate, or the position at which the flying object lands on the target plate is determined. The target system according to claim 1, further comprising: a signal processing unit that outputs a detection signal used to calculate either velocity or energy. The targeting system according to claim 2, wherein a plate-shaped transparent member is arranged behind the space. The target according to claim 2, wherein a display unit is arranged at the rear of the space to display a target image that is the target and to display an image representing the impact of the flying object according to the impact position with respect to the target image. system. The target system according to claim 4, wherein the display unit is a monitor unit of a notebook personal computer that executes software that calculates either the impact position, the velocity, or the energy based on the detection signal. . The target system according to claim 4, wherein the display unit is a tablet-type personal computer that executes software that calculates either the impact position, the velocity, or the energy based on the detection signal. The target system according to any one of claims 1 to 3, wherein a projector projects an image representing the landing of the flying object according to the landing position of the flying object with respect to the target image, together with the target image that is the target.

Images