초록 ▼

The invention comprises a method, apparatus and equipment for detecting the hit location of a projectile passing through a target plane. A light source generates at least two zones of light which subtend between them a specified angle. The light zones sweep the target plane, illuminating a projectil

The invention comprises a method, apparatus and equipment for detecting the hit location of a projectile passing through a target plane. A light source generates at least two zones of light which subtend between them a specified angle. The light zones sweep the target plane, illuminating a projectile crossing the target plane and casting a shadow of the projectile onto a screen, preferably a difuse, ground-glass screen. The screen shadow or image is detected by a spatially resolving photodetector, and the test signals so obtained are then analyzed as follows: the individual test signals from individual photodetector elements are integrated during one measurement cycle and the sum signals from individual detector elements so obtained are added or integrated into a final sum; the final sum is compared with a reference value; and in the event of a deviation from the reference value, the possibly darkened element of the photodetector is determined and the projectile location in the target plane is inferred therefrom.

대표청구항 ▼

A method for detecting the spatial position of a projectile passing through a target plane, comprising the steps of: generating at least two light zones angularly intersecting one another; sweeping the target plane with said at least two angularly intersecting light zones; passing a projectile throu

A method for detecting the spatial position of a projectile passing through a target plane, comprising the steps of: generating at least two light zones angularly intersecting one another; sweeping the target plane with said at least two angularly intersecting light zones; passing a projectile through the target plane illuminated by said at least two angularly intersecting light zones and producing shadow images of the projectile on screen means; detecting the shadow images on said screen means by spatially resolving photodetector means to obtain a signal representative of the location of the projectile in the target plane; and electronically analyzing the signal to determine the location of the projectile in the tarrier plane.