CN101149245B - Light curtain array automatic scoring round target device and method - Google Patents

Abstract

This invention discloses an automatic target-reporting method and system for indoor and outdoor bullet shooting. It includes veiling sensor array, signal collection, coordinates computation and display parts. The basic cell array of the veiling sensor is composed of a linear light source L and corresponding receiving device. The linear light source L is composed of light-emitting diodes that are arranged in line. The receiving device S is formed by the end face of optical fiber. The veiling sensor is three-dimensional frame structure. Two parallel veiling are used together in the X and Y computed coordinate directions. Each of them has two V shaped veiling which form alpha angle with the two parallel veiling. Thus, they form the special veiling sensor array. Only four sets of veiling basic cell arrays can fulfill the three-dimensional no touch measurement of the bullet. It can give the exact location and speed of the bullet on the target. The rate of false reporting rate is low. It will not be interfered by adjacent target.

Description

Light curtain array automatic scoring round target device and method

Technical field

The invention belongs to cartridge shooting with automatic scoring round target device and method and technology field, relate generally to a kind of automatic scoring round target device that utilizes light curtain technology, specifically is exactly a kind of light curtain array automatic scoring round target device and method.

Background technology

In the gunnery training and match of shooting amusement, army, public security department, the method for the statistics of shooting grade has artificial indication of shots and automatic target-indicating.Artificial indication of shots is traditional and the most original method, and there are many drawbacks in it, as has individual subjectivity, is difficult to discern repeated hole, and wastes time and energy, and has certain danger.Along with development of technology, various automatic target-indicating technology constantly occur, and automatic target-indicating has overcome the drawback of artificial indication of shots, but still have bigger difference and deficiency between the different automatic target-indicating technology.The automatic target-indicating technology mainly contains electronics automatic target-indicating technology, acoustics automatic target-indicating technology, photoelectricity automatic target-indicating technology etc. at present.The electronics automatic target-indicating is the target of design specialized, when projectile impact or when penetrating target, by detect each interbedded conduction state of target obtain bullet target position, this method need be made special-purpose target board, and complex structure, the target board that each shooting all need more renew causes bigger waste, and can not well solve the problem of repeated hole.Acoustics automatic target-indicating technology is to produce shock wave when utilizing the bullet supersonic flight, the time that arrives the predetermined sensor array by measurement bullet shock wave is calculated the point of impact position of bullet on predetermined target surface, such domestic and international patented technology is a lot, as Chinese patent CN85107388, CN92106027.0, CN01221138.9, CN03129380.8 etc., U.S. Pat 006198694, US002916289 etc.Though acoustics indication of shots technology has advantage simply and easily, is subjected to the interference of adjacent target position easily, rate of false alarm is higher, and shooter must shoot by vertical target surface, otherwise can produce than mistake, and when outdoor application, is vulnerable to Influences on Wind Velocity.Development along with the optical semiconductor power technology, scoring round target device based on photoelectric technology also constantly occurs, as Chinese patent CN95206124.4, CN3246740, CN200420007418.7 etc., they are to adopt a plurality of luminescent devices and corresponding with it receiving device to form grid, when bullet passes be, cover corresponding light, detect the output signal of the receiving device of correspondence position, judge bullet target position, the precision of this target scoring method is lower, and the photoelectric receiving device and the higher light source of the depth of parallelism that need a plurality of function admirables also will constantly detect the state of a plurality of receiving devices, the design more complicated of circuit part in test process.Adopt the target scoring method of figure acquisition technique in addition in addition, this method needs expensive CCD camera and image processing software, and its automatic target-indicating can't distinguish repeated hole and be used for burst-firing the time.

Project team of the present invention finds report or the document closely related and the same with the present invention more as yet to domestic and international patent documentation and the journal article retrieval of publishing.

Summary of the invention

The objective of the invention is at the prior art present situation, overcome the shortcoming that above-mentioned technology or device exist, invent a kind of scoring round target device and method based on light curtain technology, light curtain array automatic scoring round target device that provides and method, constitute simple, less demanding to light source, testing arrangement of the present invention only needs a photoelectric receiving device.Can accurately measure bullet on predetermined target surface target position, rate of false alarm is low, is not subjected to the interference of adjacent target position, but and shooter's any direction shooting in effective target surface.Be non-cpntact measurement, disposable input is forever used.But the coordinate of bullet on predetermined target surface not only, and speed and direction can test pill impacting the time.

The present invention realizes with following technical proposal:

Light curtain array automatic scoring round target device, by the light curtain sensor, signals collecting, coordinate Calculation and display part constitute, when bullet passes by the light curtain sensor, export the corresponding signal of telecommunication, by the signal pickup assembly collection, obtain the time that bullet passes the light curtain, by coordinate Calculation part should the time and the geometrical structure parameter of light curtain calculate the coordinate of bullet at target, show by display, it is characterized in that: the basic cell array of light curtain sensor is made up of a linear light source L and corresponding receiver devices S, light source L forms by LED is arranged in a straight line, receiving system S is closely rearranged by the end face of optical fiber, and the end face of optical fiber is exactly the working face of receiving system S, and the length of receiving system S is consistent with light source, the optical fiber boundling forms optical cable together, forms one side light curtain between light source L and receiving system S.Smooth curtain sensor of the present invention is three-dimensional frame structure form, and light curtain basic cell array is installed on the frame of frame structure, and being separately installed with light curtain L4-S4 on two opposite faces of the X coordinate direction of measuring is screen ₄L1-S1 is screen with the light curtain ₁Two sides directional light curtain, with the frame both sides of framework one side of this two directional lights curtain orthogonal direction on be separately installed with light source L2 and receiving system S2, its setting angle becomes the α angle with above-mentioned two light curtains, the parallel mirror M 1 that is equipped with on the leg of frame that L2 and S2 framework opposite face are installed with L1, the working face of L2 and S2 is mirror M 1 vis-a-vis, and to become the two light curtains at α angle with above-mentioned two directional light curtains be light curtain screen thereby formed two ₂₁With light curtain screen ₂₂That is to say that the effective optical path that forms at the X coordinate direction of measuring is " W " shape, its effective light curtain is four; Be shared light curtain at Y coordinate direction light curtain L4-S4 and the light curtain L1-S1 two sides directional light curtain measured equally, be on the frame in the same plane in framework one side vertical and with mirror M 1 mirror M 2 is installed with the framework that mirror M 1 is installed, the framework both sides of relative direction are installed light source L3 and receiving system S3 respectively, become the β angle with above-mentioned two directional light curtains, the working face of L3 and S3 is relative with mirror M 2, forms again that to become the two light curtains at β angle with above-mentioned two directional light curtains be light curtain screen ₃₁With light curtain screen ₃₂The effective optical path that forms at the Y coordinate direction of measuring is " W " shape, and its effective light curtain is four.Because two directional light curtains are light curtain screen ₁Screen ₁With light curtain screen ₁X coordinate direction and the Y coordinate direction measured are shared light curtain, and that is to say in two " W " of X coordinate direction and Y coordinate direction has two to be shared, thus actual be six light curtains.But the data of being gathered at X coordinate direction and Y coordinate direction are different, so with respect to a mistake target missile ball, the time parameter of actual acquisition is six.

The basic cell array of smooth curtain sensor of the present invention is made of a linear light source L and optical fiber receiving system S, designed the light curtain sensor of three-dimensional frame structure form again, using two speculums therein allows a pair of basic cell array produce two light curtains simultaneously, realize the stereo data collection and the multivariate data collection of scoring round target device, solved the problem that the pill impacting position is accurately measured, can not only discern heavy target, rate of false alarm is low, be not subjected to the interference of adjacent target position, but realized the light curtain array automatic scoring round target device that all can obtain accurate measurement of shooter's any direction shooting in effective target surface.

The present invention has realized crossing the three-dimensional contactless determination of target missile ball only with quadruplet light curtain basic cell array, accurately locatees not only can for target, and can give speed and the orientation of appearing the target missile ball.

Realization of the present invention is that also the output of receiving system S1 all in the light curtain sensor, receiving system S2, receiving system S3, receiving system S4 links together by optical cable, and the optical signal scioptics of total receiving system output converge on the photosurface of photodetector.

When bullet during through light curtain sensor array, the change in optical signal that causes passes to a side of lens by optical cable, shining on the sensitive area of photodetector after assembling through lens, is converted to signal of telecommunication output.

The present invention only adopts a photodetector to receive the change of optical signal in a plurality of light curtain receiving systems, and only the output that needs a harvester to gather photodetector just can obtain the time that bullet passes each act face successively.

The present invention does not need a large amount of photoelectric receiving devices, and whole automatic scoring round target device only needs a photoelectric receiving device.Simplify the structure, reduced cost, make integral body optimize more.

The present invention is as a kind of automatic target-indicating method, be based on above-mentioned light curtain array automatic scoring round target device, when bullet passes by the light curtain sensor, export the corresponding signal of telecommunication, by the signal pickup assembly collection, thereby obtain the time that bullet passes each light curtain successively, calculate the coordinate of bullet by the coordinate Calculation device according to the geometrical structure parameter of these times and light curtain again at target, show by display, it is characterized in that: gather the time signal of receiving system from six light curtains with a data collecting device, calculate respectively, determining the target position coordinate, concrete step is:

One. import the structural parameters of each light curtain basic cell array, comprise the distance of α angle, β angle and target 4 and the range direction first light curtain face of the present invention;

Two. harvester is gathered the target signal excessively that bullet passes through each light curtain, gathers the time signal that bullet is crossed six set light curtains of the present invention;

Three. utilize the signal of harvester collection to calculate the time value that bullet passes through each light curtain successively by software by the coordinate Calculation device; The coordinate Calculation device is finished by computer, and also can be the coordinate Calculation device be made of the one-chip computer of special use.

Four. structural parameters that will be imported in advance and through the time value substitution formula that harvester is gathered calculate bullet target coordinate and other parameters.Other parameters comprise that bullet crosses the speed and the direction of collection point.

Five. result of calculation is delivered to display show.Realize accurate indication of shots.

The present invention gathers the signal of receiving system from six light curtains with a data collecting device, form specific light curtain with the light curtain sensor, wherein two rectangle plane light curtains are parallel to each other, the mutually orthogonal placement of two " V " shape face light curtains, four light curtains are formed light curtain array, when flight bullet when passing light curtain array, pass the structural parameters of the sharp light curtain array of time of each act face according to the bullet of gathering, can calculate bullet target coordinate, speed and the angle value that flies into target surface.Realize accurately measuring target position coordinate and indication of shots.

Because the present invention starts with from the structure of light curtain basic cell array, by the light curtain sensor design of having carried out space frame structure, used reflective mirror dexterously, make quadruplet light curtain basic cell array, six light curtains have been brought up, can obtain the bearing data from smooth and slick curtain of target missile ball, realize accurate three-dimensional non-cpntact measurement, can accurately measure bullet on predetermined target surface target position, rate of false alarm is low, be not subjected to the interference of adjacent target position, but and shooter's any direction shooting in effective target surface.Can the heavy target of identification.The precision of testing arrangement of the present invention is relevant with the geometric parameter of light curtain array in addition, is subjected to the influence of other factors very little.Less demanding to light source do not need high-quality source of parallel light.Do not need a large amount of photoelectric receiving devices, simple in structure, cost is low, global optimization, and practical disposable input will forever be used.Not only can measure the coordinate of bullet on predetermined target surface, and speed and direction can test pill impacting the time, this is that other hit telling system can't be realized.。

Description of drawings:

Fig. 1 is that system of the present invention constitutes block diagram;

Fig. 2 is the light curtain basic cell array schematic diagram of the light curtain sensor in the light curtain sensor array;

Fig. 3 is the perspective view of light curtain sensor array;

Fig. 4 is the light curtain array distribution map of measurement of x direction coordinate;

Fig. 5 is a light curtain array distribution map of measuring y direction coordinate;

Fig. 6 is that the velocity of shot vector is at spatial distributions figure;

Fig. 7 is a light curtain receiving system output light signal collection index path;

Fig. 8 is the photodetector output signal that data acquisition unit collects;

The specific embodiment:

Below in conjunction with accompanying drawing structural principle of the present invention and operation principle are described in further detail.

Embodiment 1: as shown in Figure 1, implementation of the present invention is: light curtain array automatic scoring round target device, constitute by light curtain sensor, signals collecting, coordinate Calculation and display part, when bullet passes by the light curtain sensor, export the corresponding signal of telecommunication,, obtain the time that bullet passes the light curtain by the signal pickup assembly collection, by coordinate Calculation part should the time and the geometrical structure parameter of light curtain calculate the coordinate of bullet at target, show by display.The basic cell array of light curtain sensor is made up of a linear light source L and corresponding receiver devices S in the light curtain array automatic scoring round target device of the present invention, light source L is by 1 arranged in a straight line composition of LED, receiving system S is closely rearranged by the end face of optical fiber 2, the diameter of optical fiber 2 is 0.8mm in this example, the end face of optical fiber 2 is exactly the working face of receiving system S, the length of receiving system S is consistent with light source, and the length of light source L and receiving system S all is 500mm.Optical fiber 2 boundlings form optical cable 3 together, form one side light curtain screen between light source L and receiving system S, see Fig. 2.Smooth curtain sensor of the present invention is three-dimensional frame structure form, and referring to Fig. 3, frame structure adopts frame for movement, makes framework with the high-strength aluminum alloy section bar, again with the shaped steel integral body that is welded.Light curtain basic cell array is installed on the frame of frame structure, and being separately installed with light curtain L4-S4 on two opposite faces of the X coordinate direction of measuring is screen ₄L1-S1 is screen with the light curtain ₁Two sides directional light curtain, with the frame both sides of framework one side of this two directional lights curtain orthogonal direction on be separately installed with light source L2 and receiving system S2, its setting angle becomes the α angle with above-mentioned two light curtains, the parallel mirror M 1 that is equipped with on the leg of frame that L2 and S2 framework opposite face are installed with L1, mirror M 1 just is contained in the centre position of the frame that frames up, the working face of L2 and S2 is mirror M 1 vis-a-vis, and to become the two light curtains at α angle with above-mentioned two directional light curtains be light curtain screen thereby formed two ₂₁With light curtain screen ₂₂That is to say that the effective optical path that forms at the X coordinate direction of measuring is " W " shape, its effective light curtain is four; Be shared light curtain at Y coordinate direction light curtain L4-S4 and the light curtain L1-S1 two sides directional light curtain measured equally, be on the frame in the same plane in framework one side vertical and with mirror M 1 mirror M 2 is installed with the framework that mirror M 1 is installed, mirror M 2 also is contained in the centre position of the frame that frames up, the framework both sides of relative direction are installed light source L3 and receiving system S3 respectively, become the β angle with above-mentioned two directional light curtains, the working face of L3 and S3 is relative with mirror M 2, forms again that to become the two light curtains at β angle with above-mentioned two directional light curtains be light curtain screen ₃₁With light curtain screen ₃₂The effective optical path that forms at the Y coordinate direction of measuring is " W " shape, and its effective light curtain is four.Because two directional light curtains are light curtain screen ₁Screen ₄With light curtain screen ₄At X coordinate direction and the Y coordinate direction measured is shared light curtain, and that is to say in two " W " of X coordinate direction and Y coordinate direction has two to be shared, thus actual be six light curtains.But the data of being gathered at X coordinate direction and Y coordinate direction are different, thus cross the target missile ball with respect to one, the time parameter of actual acquisition be six each and every one, calculating the target coordinate data according to six time datas.The structure of this routine middle frame is identical with Y coordinate direction physical dimension at the X coordinate direction, and therefore α angle wherein equates with the β angle.

Embodiment 2: overall formation and concrete scheme are with embodiment 1, and referring to Fig. 2, wherein the length of light source L and receiving system S can design according to operating position, and concrete size is by the precision decision of test request.The length of light source L and receiving system S is 1000mm in this example, and it is the optical fiber of 1mm that optical fiber 2 adopts diameter.

Embodiment 3: overall formation and concrete scheme are with embodiment 1, referring to Fig. 7, all receiving system S1, receiving system S2, the output of receiving system S3, receiving system S4 link together by optical cable 3 in the light curtain sensor, and the optical signal scioptics 6 of total receiving system output converge on the photosurface of photodetector 7.The output of the receiving system S of each light curtain sensor of one termination of optical cable 3, the other end is concentrated in together it by clamp mechanism 8.When bullet passes light curtain sensor array, cause receiving system S ₁, S ₂, S ₃, S ₄The change of middle optical fiber luminous flux, optical cable 3 all causes the change of the luminous flux in each receiving system on the convergent lens 6, shines on the sensitive area of photelectric receiver 7 output electric pulse signal after signal processing circuit after the convergence.Instrument has not reduced the quantity of receiving device like this, has more reduced the quantity of signal collecting device, and the signals collecting part is simplified greatly.

Embodiment 4: the automatic target-indicating method of light curtain array automatic scoring round target device

The automatic target-indicating method of light curtain array automatic scoring round target device is based on the automatic target-indicating method of above-mentioned light curtain array automatic scoring round target device, adopt the light curtain array automatic scoring round target device of embodiment 1, when bullet passes by the light curtain sensor, export the corresponding signal of telecommunication, by the signal pickup assembly collection, thereby obtain the time that bullet passes each light curtain successively, calculate the coordinate of bullet by the coordinate Calculation device according to the geometrical structure parameter of these times and light curtain again, show by display at target.The present invention gathers the time signal of receiving system from six light curtains with a data collecting device, calculates respectively, is determining the target position coordinate.When bullet passes the array of being made up of the light curtain sensor successively, receiving system S exports corresponding pulse signal, referring to Fig. 8, by the signal pickup assembly collection, thereby obtain the time that bullet passes each light curtain successively, geometrical structure parameter by these times and light curtain array calculates the coordinate of bullet on target 4 again, and concrete step is:

One. import the structural parameters of each light curtain basic cell array, comprise the distance of α angle, β angle and target 4 and the range direction first light curtain face of the present invention, the parameter d relevant and the length m of light curtain with two directional light interludes distance;

Two. harvester is gathered the target signal excessively that bullet passes through each light curtain; Gather bullet and cross the time signal T of six set light curtains of the present invention;

Three. utilize the signal of harvester collection to calculate the time value that bullet passes through each light curtain successively by software by the coordinate Calculation device; The coordinate Calculation device is finished by computer, and the coordinate Calculation device is made of the one-chip computer of special use.

Four. structural parameters that will be imported in advance and through the time value substitution formula that harvester is gathered calculate bullet target coordinate and other parameters.Other parameters comprise that bullet crosses the speed and the direction of collection point.

Five. result of calculation is delivered to display show.

Wherein after the structure of light curtain sensor array was determined, it was exactly the equation of determining that each in the middle of the array measured curtain face equation, below is the equation of each act face:

Screen ₁：z＝0

Screen ₂₁：-sinα·x+cosα·z＝0

Screen ₂₂：sinα·x+cosα·z＝m·sinα+d·cosα

Screen ₃₁：-sinα·y+cosα·z＝0

Screen ₃₂：sinα·y+cosα·z＝d·cosα+n·sinα

Screen ₄：z＝2d

If the intersection point of bullet and screen1 is (X ₁, Y ₁), velocity is (V _X, V _Y, V _Z)

Then establish an equation under the simultaneous

-sinα·(x1+T ₂₁·V _X)+cosα·(T ₂₁·V _Z)＝0

sinα·(X ₁+T ₂₂·V _X)+cosα·(T ₂₂·V _Z)＝m·sinα+d·cosα

-sinα·(Y ₁+T ₃₁·V _Y)+cosα·(T ₃₁·V _Z)＝0

sinα·(Y ₁+T ₃₂·V _Y)+cosα·(T ₃₂·V _Z)＝d·cosα+n·sinα

T ₄·V _Z＝2d

Find the solution above-mentioned equation and just can try to achieve (X ₁, Y ₁), (V _X, V _Y, V _Z), after the position of target was determined, when promptly the distance of plane, bidding target place and first act face was L, then the coordinate of bullet on target was:

$X={\mathrm{<figure-callout\; id="1"\; label="X"\; filenames="S07119000620071115E000012.png"\; state="\{\{state\}\}">X</figure-callout>}}_1+V_X\&CenterDot;\frac{L}{V_Z}$

$Y={\mathrm{<figure-callout\; id="1"\; label="Y"\; filenames="S07119000620071115E000012.png"\; state="\{\{state\}\}">Y</figure-callout>}}_1+V_Y\&CenterDot;\frac{L}{V_Z}$

The speed of bullet is: $V=\sqrt{{\mathrm{<figure-callout\; id="2"\; label="V\; X"\; filenames="S07119000620071115E000012.png"\; state="\{\{state\}\}">V</figure-callout>}}_X^{}+{\mathrm{<figure-callout\; id="2"\; label="V\; Y"\; filenames="S07119000620071115E000012.png"\; state="\{\{state\}\}">V</figure-callout>}}_Y^{}+{\mathrm{<figure-callout\; id="2"\; label="V\; Z"\; filenames="S07119000620071115E000012.png"\; state="\{\{state\}\}">V</figure-callout>}}_Z^{}}$

Not only accurately obtained the point of impact coordinate of target missile ball, and also can give and appear target velocity amplitude constantly.

Embodiment 5: adopt arbitrary light curtain array automatic scoring round target device among the embodiment 1～3, implementation method is with embodiment 4

Wherein calculating the method for point of impact coordinate can also directly be tried to achieve by the method for solving a triangle.

$\mathrm{\&gamma;}=\arctan \frac{T_{22}+T_{21}-T_4}{\tan \mathrm{\&alpha;}(T_{22}-T_{21})}$

$\mathrm{\&theta;}=\arctan \frac{T_{32}+T_{31}-T_4}{\tan \mathrm{\&alpha;}(T_{32}-T_{31})}$

$V=\frac{2S}{(T_4-T_1)\cos \mathrm{\&gamma;}\cos \mathrm{\&theta;}}$

$X=S\cot \mathrm{\&alpha;}-\frac{S(T_{21}-T_1)\cos (\mathrm{\&alpha;}-\mathrm{\&gamma;})}{(T_4-T_1)\cos \mathrm{\&gamma;}\sin \mathrm{\&alpha;}}$

$Y=S\cot \mathrm{\&alpha;}-\frac{2S(T_{31}-T_1)\cos (\mathrm{\&alpha;}-\mathrm{\&theta;})}{(T_4-T_1)\cos \mathrm{\&theta;}\sin \mathrm{\&alpha;}}$

Embodiment 6: overall constitute and concrete scheme with embodiment 1, referring to Fig. 4 and Fig. 5,

The array of light curtain sensor is made up of the light curtain array of measurement of x direction coordinate and the light curtain array of measurement y direction coordinate respectively.The measuring light curtain of measurement of x direction coordinate is by light source L ₁With reception S ₁The light curtain screen that forms ₁, light source L ₂With reception S ₂The light curtain screen that forms ₂₁, screen ₂₂, light source L ₄With reception S ₄The light curtain screen that forms ₄Four light curtains are formed.Wherein, light source L ₂The light that sends shines mirror M with the α angle ₁On, reverberation shines receiving system S with the α angle equally ₂On, thereby form two light curtain screen ₂₁, screen ₂₂When bullet passed from light curtain sensor array, the moment that bullet passes x orientation measurement light curtain was T ₁, T ₂₁, T ₂₂, T ₄The measuring light curtain of measuring y direction coordinate is by light source L ₁With reception S ₁The light curtain screen that forms ₁, light source L ₃With reception S ₃The light curtain screen that forms ₃₁, screen ₃₂, light source L ₄With reception S ₄The light curtain screen that forms ₄Four light curtains are formed.Wherein, light source L ₃The light that sends shines mirror M with β angle (as β=45 °) ₂On, reverberation shines receiving system S with the β angle equally ₃On, thereby form two light curtain screen ₃₁, screen ₃₂When bullet passed from light curtain sensor array, the moment that bullet passes x orientation measurement light curtain was T ₁, T ₃₁, T ₃₂, T ₄The α angle equates with the β angle in this example.

Just as shown in Figure 4 and Figure 5.Wherein, the measurement light curtain array of each direction of measurement is made up of 4 light curtains, light curtain screen ₁, light curtain scree ₄Two directional light curtains are shared by the light curtain array of two direction of measurement, and two light curtains are that a light source L, receives S and a speculum is formed by a basic cell array in addition, so not only reduced a pair of smooth curtain sensor array, and made two angle adjustment between the measuring light curtain convenient.

Embodiment 7: implementation method is with embodiment 5

When shooter's out of plumb target surface was shot, bullet distributed as shown in Figure 6 in the velocity in space, and wherein θ is the angle of velocity and horizontal plane, is the angle of pitch; γ is the angle of velocity and vertical plane, is the drift angle.Their method for solving provides in embodiment 5.

Claims (3)

1. light curtain array automatic scoring round target device, by the light curtain sensor, signals collecting, coordinate Calculation and display part constitute, when bullet passes the light curtain sensor, export the corresponding signal of telecommunication, by the signal pickup assembly collection, obtain the time that bullet passes the light curtain, by coordinate Calculation part should the time and the geometrical structure parameter of light curtain calculate the coordinate of bullet at target, show by display, it is characterized in that: the basic cell array of light curtain sensor is made up of a linear light source (L) and corresponding receiver devices (S), light source (L) is by LED (1) arranged in a straight line composition, receiving system (S) is closely rearranged by the end face of optical fiber (2), the length of receiving system (S) is consistent with light source, and optical fiber (2) boundling forms optical cable (3) together, forms one side light curtain between light source (L) and receiving system (S); The light curtain sensor is three-dimensional frame structure form, light curtain basic cell array is installed on the frame of frame structure, on two opposite faces of the X coordinate direction of measuring, be separately installed with the 4th light curtain (L4-S4) and first light curtain (L1-S1) the two sides directional light curtain, with the frame both sides of framework one side of this two directional lights curtain orthogonal direction on be separately installed with secondary light source (L2) and second receiving system (S2), its setting angle becomes the α angle with above-mentioned two light curtains, parallel first speculum (M1) that is equipped with on the leg of frame that secondary light source (L2) and second receiving system (S2) framework opposite face are installed with first light source (L1), the working face of secondary light source (L2) and second receiving system (S2) is first speculum (M1) vis-a-vis, the effective optical path that forms at the X coordinate direction of measuring is " W " shape, and its effective light curtain is four; Be shared light curtain equally at Y coordinate direction the 4th light curtain of measuring (L4-S4) and the first light curtain (L1-S1) curtain of pleasing both parties, be on the frame in the same plane in framework one side vertical and with first speculum (M1) second speculum (M2) is installed with the framework that first speculum (M1) is installed, the framework both sides of relative direction are installed the 3rd light source (L3) and the 3rd receiving system (S3) respectively, become the β angle with above-mentioned two directional light curtains, the working face of the 3rd light source (L3) and the 3rd receiving system (S3) is relative with second speculum (M2), the effective optical path that forms at the Y coordinate direction of measuring is " W " shape, and its effective light curtain is four.

2. light curtain array automatic scoring round target device according to claim 1, it is characterized in that: the output of all first receiving device (S1), second receiving system (S2), the 3rd receiving system (S3), the 4th receiving system (S4) links together by optical cable (3) in the said smooth curtain sensor, and the optical signal scioptics (6) of total receiving system output converge on the photosurface of photodetector (7).

3. a light curtain array automatic scoring round target method is to use on claim 1 or 2 described light curtain array automatic scoring round target device, when bullet passes by the light curtain sensor, export the corresponding signal of telecommunication, by the signal pickup assembly collection, thereby obtain the time that bullet passes each light curtain successively, calculate the coordinate of bullet by the coordinate Calculation device according to the geometrical structure parameter of these times and light curtain again at target, show by display, it is characterized in that: gather the time signal of receiving system from six light curtains with a data collecting device, calculate respectively, determining the target position coordinate, concrete step is:

One. import the structural parameters of each light curtain basic cell array;

Two. harvester is gathered the target signal excessively that bullet passes through each light curtain;

Three. utilize the signal of harvester collection to calculate the time value that bullet passes through each light curtain successively by software by the coordinate Calculation device;

Four. structural parameters that will be imported in advance and through the time value substitution formula that harvester is gathered calculate bullet target coordinate and other parameters;

Five. result of calculation is delivered to display show.

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