JP3997572B2 - Bullet target position detection device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bullet target position detection device that detects a landing position on a target of a shot bullet.
[0002]
[Prior art]
As described in Japanese Examined Patent Publication No. 62-17193, the conventional apparatus includes at least three sensors for detecting a shock wave caused by a high-speed flight of a bullet for each shooting lane, and calculates the target position of the bullet. .
FIG. 5 is a perspective view showing a configuration of a conventional shooting range.
FIG. 6 is a perspective view showing a conventional sensor.
As shown in FIG. 5, the shooting range includes a plurality of shooting lanes 12. The shooting lane 12 has a shooting point 8 shot by the training shooter 7 and a target 1 to be shot. A protective device 9 for avoiding the impact is arranged in front of the target 1, and a landing position detection device 2 provided with at least three spaced sensors 10 behind the protective device 9, that is, outside the field of view of the training shooter 7. Is installed. These landing position detection devices 2 are arranged in the vicinity of the lower end portion of the target 1 and detect a shock wave generated by a bullet fired toward the target 1. In the conventional apparatus, sensors in a long line are provided in front of all targets 1, or sensors in different groups are provided in each target 1, and the landing position detection device 2 for each target 1 is used to detect each target 1. Calculate the target position of the bullet above 1.
[0003]
[Problems to be solved by the invention]
In the above prior art, if the position where the sensor is set is not appropriate, the detection accuracy of bullets on the target will vary, or the detection accuracy will be extremely reduced. For example, a sensor closer to the target (bullet) has a smaller shock wave detection time difference, a smaller effective value, and an extremely lower detection accuracy. For this reason, when it is attempted to mount a sensor in a long horizontal row so as to increase the distance between the target (bullet) and the sensor, there is a problem in the shooting range space and the increase in the cost of the sensor.
In addition, there is a problem that the detection error at the target position caused by the setting deviation (change) of the sensor cannot be corrected by calculation, and erroneous evaluation is performed.
An object of the present invention is to improve the detection accuracy of the center position of a bullet and to detect an abnormal operation of the apparatus.
[0004]
The object is to calculate a target position of the bullet from a plurality of sensors for detecting a shock wave generated when the shot bullet is flying at high speed in the air, and a detection time difference of the shock wave obtained between the sensors. a landing position detecting means provided for each shooting lane includes a vessel, at center position detecting device of the projectile and control means which controls the respective landing position detecting means, shooting the shooting lanes and both sides adjacent thereto The landing position detection means of the lane is made into one group, and the bullet position data for the same bullet is output for each of the landing position detection means by operating the landing position detection means of the group, and a plurality of bullet position data is compared. the Rukoto a means for determining a mid-position to the control means, is achieved.
[0005]
According to the above configuration, since the landing position detection unit of the adjacent shooting lane outputs the landing position output by the adjacent shooting lane for the same bullet, the effective value of the detection time difference is Since the detection accuracy of the landing position is large and high, the detection accuracy of the target position as the whole apparatus is high.
Further, the reliability of the apparatus is improved by comparing and determining the landing positions output by the plurality of landing position detection means.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
First, the configuration of the embodiment of the present invention will be described.
As shown in FIG. 5 and FIG. 6, the main component device includes a plurality of sensors 10 that detect shock waves generated when a fired bullet travels in air at high speed, and a target 1 based on a difference in arrival time of shock waves to each sensor 10. The landing position detection device 2 that measures the target position of the upper bullet and the shooting control device 6 that controls these devices in an integrated manner.
The landing position detection device 2 captures the shock wave of the bullet with a plurality of sensors 10, calculates the target position 13 of the bullet from the difference in arrival time of the shock wave to each sensor 10, and transmits it to the display unit 5 for display via the communication line. It comprises a converter unit 11, a communication cable 3 for connecting them, and a connection box 4. The shooting control device 6 receives and analyzes the landing position data transmitted from the landing position detection device 2. In each shooting field, when there are a plurality of shooting lanes 12, a landing position detection device 2 is provided for each target 1 of each shooting lane 12, and the shooting control device 6 controls all the shooting lanes 12 in an integrated manner.
[0007]
Next, the operation of the embodiment of the present invention will be described.
First, the measurement principle of the bullet middle position will be explained.
FIG. 1 is an explanatory view for explaining the principle of measuring a bullet middle position according to the embodiment of the present invention.
FIG. 2 is a flowchart for explaining the measurement calculation of FIG.
The principle of measuring the bullet middle position 13 on the target 1 is that a shock wave generated when the bullet travels at a high speed in the air is detected by a plurality of sensors 10a, 10b, 10c, 10D, and each sensor 10a, 10b, 10c is detected. The positions having constant distance differences αΔt ₁ , αΔt ₂ from the sensors 10 a, 10 b, 10 c, 10 d are calculated based on the shock wave arrival time differences Δt ₁ , Δt ₂ , Δt ₃ and the propagation speed α of the shock wave to 10d, and the bullet passes Measure position without contact. The sensors 10b and 10d are installed on the line connecting the shooting point 8 and the target 1 by a distance l.
The landing position detection device 2 is provided in each shooting range, but the number of sensors 10 provided corresponding to the shooting points 8 is preferably as small as possible due to problems such as space, but to improve detection accuracy. The greater the number of sensors 10, the better. Since the control for each shooting lane 12 is generally controlled by the shooting control device 6, the existing equipment can be controlled without increasing the number of sensors 10 by simultaneously controlling the landing position detection devices 2 of the adjacent shooting lanes 12. The accuracy of bullet detection can be easily improved.
[0008]
Next, the measurement of the bullet middle position of the present invention will be described.
FIG. 3 is an explanatory diagram for explaining the bullet middle position measurement according to the embodiment of the present invention.
FIG. 4 is a flowchart for explaining the measurement calculation of FIG.
As shown in FIGS. 3 and 5, it is assumed that the training shooter 7 shoots at the target 1b from the shooting point 8 and the bullet hits the bullet center position 13 on the target 1b. The detection of the bullet middle position 13 on the target 1b is performed by adding the target 1a adjacent to the landing position detection device 2b, the landing position detection device 2a of the target 1c, and the landing position detection device 2c, and three landing position detection devices 2a and 2b. The shooting control device 6 controls to carry out by 2c. As shown in FIG. 4, the shooting control device 6 inputs the bullet position value data output from the three landing position detection devices 2a, 2b, and 2c via the communication cable 3 and the connection box 4, and the three types of bullet positions. The value data is compared to finally determine the target position 13 of the bullet. The bullet position comparison method shown in FIG.
(1) Simply average the values,
(2) Average the two values of the landing position detection devices close to the target position of the bullet, and (3) Calculate each landing position detection device with a weight based on the target position of the bullet.
(4) Treat each value with the conventional accumulated value.
(5) Change how data is used on the X and Y axes.
Etc. are considered.
[0009]
There is also a method for calculating the target position of a bullet based on the arrival time difference between shock waves of adjacent sensors attached to adjacent landing position detection devices. At this time, the numerical values can be handled in the same manner as described above.
As described above, according to the present embodiment, the target position of the bullet is accurately measured without changing the current installation space and increasing the number of sensors for detecting the bullet. can do.
[0010]
【The invention's effect】
According to the present invention, by detecting the landing position output by the adjacent landing position detection means for the same bullet, the detection accuracy of the landing position as the entire apparatus is increased.
Further, the reliability of the apparatus is improved by comparing and determining the landing positions output by the plurality of landing position detection means.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram for explaining the principle of measuring a bullet middle position according to an embodiment of the present invention.
FIG. 2 is a flowchart illustrating the measurement calculation of FIG.
FIG. 3 is an explanatory diagram for explaining a bullet middle position measurement according to the embodiment of this invention.
4 is a flowchart for explaining the measurement calculation of FIG. 3;
FIG. 5 is a perspective view showing a configuration of a conventional shooting range.
FIG. 6 is a perspective view showing a conventional sensor.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Target 1a Target 1b Target 1c Target 2 Landing position detection apparatus 2a Landing position detection apparatus 2b Landing position detection apparatus 2c Landing position detection apparatus 3 Communication cable 4 Connection box 5 Display unit 6 Shooting control apparatus 7 Training shooter 8 Shooting point 9 Protective equipment 10 sensor 10a sensor 10b sensor 10c sensor 10d sensor 11 converter unit 12 shooting lane 13 middle position

Claims (1)

A plurality of sensors for detecting shock waves generated when the fired bullets fly at high speed in the air, and a calculator for calculating the target position of the bullets from the difference in detection times of the shock waves obtained between the sensors. In a bullet center position detection device having a landing position detection means provided for each shooting lane and a control means for controlling each landing position detection means, the landing positions of the shooting lane and the adjacent shooting lanes adjacent to the shooting lane The detection means is made into one group, and the landing position detection means of the group is operated to output bullet position data for the same bullet for each of the landing position detection means, and a plurality of bullet position data are compared to determine the target position. A bullet center position detecting device, characterized in that means for performing the operation is provided in the control means.

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