Device and method for measuring initial speed of array gun barrel through wedge-shaped light curtain array
An array and light curtain technology, applied in the field of shooting range testing, can solve the problem of inability to measure the flight speed of multiple projectiles, and achieve the effect of convenient target deployment, diverse functions and flexible combination.
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Embodiment 1
[0030] The invention is a device for measuring the muzzle velocity of an array gun barrel by a wedge-shaped light curtain array. The applied target array gun barrel is a 2×2 launcher, and the schematic diagram of the gun barrel position is as follows figure 1 shown. Such as image 3 As shown, the measurement device consists of a wedge-shaped light curtain array, a signal processing and amplification module 3, and a connecting rod 4. The wedge-shaped light curtain array is specifically a wedge-shaped four-light curtain array, wherein each wedge-shaped light curtain consists of a light source 1 and a photodiode receiving module 2, or multiple light curtains can share one light source 1, and the photodiode module 2 is perpendicular to the center line of the light source 1, such as figure 2 shown. The light source 1 is installed on the light source structural frame 5, the photodiode module 2 and the signal processing module 3 are installed in the receiving device structural fr...
Embodiment 2
[0032] Measuring device is as embodiment 1, assumes as Figure 4 The angle β between the wedge-shaped light curtains shown 1 = β 2 = β 3 = β 4 = β, the spatial position of the gun barrel of the array gun barrel corresponds to each light curtain in the wedge-shaped four-light curtain array respectively, the angle between the corresponding position of the gun barrel of A and the light source is γ, and the vertical distance from the light source 1 is H, The distance from the Y axis where the light source 1 is located is x, and the distance between the light source 1 and the photoelectric receiving device is R, such as Figure 4 shown. Then there are:
[0033]
[0034] According to the figure, it can be seen that 0<γ<β, and the maximum critical value of γ is β, then:
[0035]
[0036] When L is a fixed value, the maximum value of x is which is
[0037]
[0038] That is, the smaller R is, the larger γ is; the larger R is, the smaller γ is; when R is a constant val...
Embodiment 3
[0042] The measuring device is as in Example 1. The two sides of the light source structure frame 5 and the receiving device structure frame 6 are respectively equipped with a columnar laser standard indicator 7. When the measuring device is installed, the accuracy of the installation is guaranteed according to the beam coincidence of the corresponding laser standard indicator. .
[0043] Columnar lasers can be installed on both edges of the field of view of each wedge-shaped light curtain, as a boundary with another light curtain, and aligned with the gun barrel when in use, so as to distinguish which area it is in.
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