An overlapping combination light curtain electronic target system

Abstract

An overlapping combined light curtain electronic target system, by setting an overlapping region along the junction of two interconnected fan-shaped light curtains representing the same parameter on an optical detection coordinate plane, enables the bullet impact point at the junction of the light curtains to be completely included within one of the fan-shaped light curtains, thereby improving the target reporting accuracy and efficiency. The system is characterized by including a three-dimensional spatial structure with an internal optical detection coordinate plane, wherein the optical detection coordinate plane includes a first fan-shaped light curtain and a second fan-shaped light curtain representing the same parameter. The first and second fan-shaped light curtains are interconnected to form an overlapping region. The first boundary line of the overlapping region itself is light from the first fan-shaped light curtain, and the second boundary line of the overlapping region itself is light from the second fan-shaped light curtain. The first boundary line is located inside the second fan-shaped light curtain, and the second boundary line is located inside the first fan-shaped light curtain.

Description

Technical Field

[0001] This invention relates to light curtain electronic target technology, and in particular to an overlapping combination light curtain electronic target system. By setting an overlapping area of ​​two interconnected fan-shaped light curtains representing the same parameters along their connection point on the optical detection coordinate plane, the impact point at the connection point of the light curtains can be completely included in one of the fan-shaped light curtains, thereby improving the accuracy and efficiency of target reporting. Background Technology

[0002] A light curtain electronic target typically uses an array of multiple transmitters and receivers to form a quadrilateral optical detection coordinate plane. At one corner of the quadrilateral (e.g., the lower left corner), two transmitters are sometimes placed, each responsible for a 45-degree half-sector. These two 45-degree half-sectors are combined or connected to form a complete 90-degree sector. The light rays on this complete sector represent the same coordinate parameter. Similarly, at the other corner of the quadrilateral (e.g., the lower right corner), two transmitters are also placed to form another complete sector intersecting the previous light rays, thus obtaining another coordinate parameter. For any point of impact on the optical detection coordinate plane, the coordinate value of the point of impact can be determined by the parameter values ​​of the two coordinate parameters. The inventors have discovered that achieving high precision in connecting the two half-sectors representing the same coordinate parameter is difficult. Even with high-precision connection, it may cause confusion regarding which half-sector the coordinate parameter of the point of impact in the connecting area belongs to, thus adversely affecting the target reporting accuracy and efficiency. The inventors believe that if two interconnected fan-shaped light curtains representing the same parameter are arranged along their junction on the optical detection coordinate plane, with an overlapping region formed at their junction—for example, on the lower right side of the diagonal line from the lower left corner—that is, the light rays from the upper left side are rotated and deflected to the right, or deflected horizontally downwards or horizontally to the right through the upper left fan-shaped light curtain, the impact point at the junction can be completely contained within one of the fan-shaped light curtains. For example, the left boundary line of the overlapping region itself falls entirely within the upper left fan-shaped light curtain, and the right boundary line of the overlapping region itself falls entirely within the lower right fan-shaped light curtain. Therefore, there is no problem with the positioning of the impact point along the left and right boundary lines, and the problem of selecting the coordinate parameters of the impact point near the junction line caused by the previous seam-type connection (without an overlapping region) is avoided, thereby improving the accuracy and efficiency of target reporting. In view of this, the inventors have completed this invention. Summary of the Invention

[0003] This invention addresses the deficiencies or shortcomings of existing technologies by providing an overlapping combined light curtain electronic target system. By setting an overlapping area along the junction of two interconnected fan-shaped light curtains representing the same parameters on the optical detection coordinate plane, the impact point at the junction of the light curtains can be completely included within one of the fan-shaped light curtains, thereby improving the accuracy and efficiency of target reporting.

[0004] The technical solution of this invention is as follows:

[0005] An overlapping combined light curtain electronic target system is characterized by comprising a three-dimensional spatial structure with an internal optical detection coordinate surface. The optical detection coordinate surface includes a first sector light curtain and a second sector light curtain representing the same parameter. The first sector light curtain and the second sector light curtain are connected to each other to form an overlapping area. The first boundary line of the overlapping area itself is light from the first sector light curtain, and the second boundary line of the overlapping area itself is light from the second sector light curtain. The first boundary line is located inside the second sector light curtain, and the second boundary line is located inside the first sector light curtain.

[0006] The three-dimensional spatial structure includes a front layer and a rear layer. A first transmitter and a second transmitter are arranged at the lower left corner of the three-dimensional spatial structure. The first transmitter is located in the front layer, and the second transmitter is located in the rear layer. A first receiver array is arranged on the right side of the front layer, and a second receiver array is arranged on the upper side of the rear layer. The first transmitter and the first receiver array form a first fan-shaped light curtain through light transmission and reception, and the second transmitter and the second receiver array form a second fan-shaped light curtain through light transmission and reception.

[0007] The combination of the first and second sector light curtains covers the entire optical detection coordinate plane.

[0008] The overlapping area of ​​the light curtain is formed by rotating or parallel shifting the first or second fan-shaped light curtain.

[0009] A third transmitter and a fourth transmitter are located at the lower right corner of the three-dimensional spatial structure. The third transmitter is located in the front layer, and the fourth transmitter is located in the rear layer. A third receiver array is located on the upper side of the front layer, and a fourth receiver array is located on the left side of the rear layer. The third transmitter and the third receiver array form the third fan-shaped light curtain through light transmission and reception, and the fourth transmitter and the fourth receiver array form the fourth fan-shaped light curtain through light transmission and reception. The third and fourth fan-shaped light curtains are interconnected to form an overlapping area.

[0010] The combination of the third and fourth sector light curtains covers the entire optical detection coordinate plane.

[0011] The first receiver array, the second receiver array, the third receiver array, and the fourth receiver array each have independent optical path sealing, or they can be combined with optical path sealing.

[0012] The first transmitter, the first receiver array, the third transmitter, and the third receiver array are located on the same plane within the front layer.

[0013] The second transmitter, the second receiver array, the fourth transmitter, and the fourth receiver array are located on the same plane within the rear layer.

[0014] The first receiver array, the second receiver array, the third receiver array, and the fourth receiver array all have a double-layer staggered dense arrangement structure in front of and behind the receivers.

[0015] The technical effects of this invention are as follows: This invention provides an overlapping combined light curtain electronic target system. By setting an overlapping area at the junction of two interconnected fan-shaped light curtains representing the same parameters on the optical detection coordinate plane, for example, forming an overlapping area on the lower right side of the diagonal line at the lower left corner, that is, the light rays from the upper left side are rotated and deflected to the right, or deflected horizontally downwards or horizontally to the right through the upper left fan-shaped light curtain. This allows the bullet impact point at the junction to be completely included within one of the fan-shaped light curtains. For example, the left boundary line of the overlapping area itself falls completely within the upper left fan-shaped light curtain, and the right boundary line of the overlapping area itself falls completely within the lower right fan-shaped light curtain. Therefore, there is no problem of bullet impact point positioning on the left and right boundary lines, and the problem of selection difficulties for the coordinate parameters of the bullet impact point near the junction line caused by the previous seam-type connection (without an overlapping area) is avoided. This is beneficial to improving the accuracy and efficiency of target reporting. Furthermore, by employing a staggered, densely packed double-layer structure (where "front and back" refers to front and back on the same planar layer, while "front and back" in the staggered front and back arrangement of two receiver arrays and two transmitters refers to front and back between different planar layers), a denser distribution of trajectory coordinate lines can be achieved, thereby further improving target reporting accuracy and efficiency. The first transmitter, the first receiver array, the third transmitter, and the third receiver array are located on the same plane within the front layer; alternatively, the second transmitter, the second receiver array, the fourth transmitter, and the fourth receiver array are located on the same plane within the rear layer, which can reduce the thickness of the target. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a system for forming an overlapping combined light curtain electronic target through parallel offset.

[0017] Figure 2 This is a schematic diagram of a system for forming an overlapping combined light curtain electronic target by rotational offset.

[0018] The reference numerals in the attached diagram are listed below: 1-Three-dimensional spatial structure (within which an optical detection coordinate plane is formed); 2-Lower left corner; 3-First transmitter or first transmitter at the lower left corner of the front layer; 4-Second transmitter or second transmitter at the lower left corner of the rear layer; 5-Lower right corner; 6-First receiver array or first receiver array on the right side of the front layer; 7-Second receiver array or second receiver array on the upper side of the rear layer; 8-First fan-shaped light curtain or arc of the first fan-shaped light curtain (located in the lower right region); 9-Right-projected light ray from the lower right region; 10-First diagonal light ray; 11-Second fan-shaped light curtain or arc of the second fan-shaped light curtain (located in the upper left region); 12-Upward-projected light ray from the upper left region; A-Offset angle of the second fan-shaped light curtain rotating to the right; B-Overlapping area of ​​the light curtain or overlapping fan-shaped area of ​​the light curtain or fan-shaped angle of the overlapping area of ​​the light curtain (the overlapping area of ​​the light curtain can be formed by rotating or parallel offset of the first or second fan-shaped light curtain); C-Distance of the second fan-shaped light curtain shifting downwards in parallel. Detailed Implementation

[0019] The following is in conjunction with the attached diagram ( Figure 1 The present invention will be described below.

[0020] Figure 1 This is a schematic diagram of a system for forming an overlapping combined light curtain electron target through parallel offset. (Example) Figure 1 As shown, an overlapping combined light curtain electronic target system includes a three-dimensional spatial structure 1 with an internal optical detection coordinate plane. The optical detection coordinate plane includes a first fan-shaped light curtain 8 and a second fan-shaped light curtain 11 representing the same parameter. The first fan-shaped light curtain 8 and the second fan-shaped light curtain 11 are interconnected to form a light curtain overlapping region B. The first boundary line of the light curtain overlapping region B itself is the light ray from the first fan-shaped light curtain 8. Figure 1 The center is located at the upper left, i.e., the 45-degree line, i.e., the first diagonal ray 10), and the second boundary line of the overlapping area B of the light curtain itself is the ray from the second fan-shaped light curtain 11. Figure 1 The first boundary line is located inside the second fan-shaped light curtain 11, and the second boundary line is located inside the first fan-shaped light curtain 8. The three-dimensional space structure 1 includes a front layer and a rear layer. A first transmitter 3 and a second transmitter 4 are arranged at the lower left corner 2 of the three-dimensional space structure 1. The first transmitter 3 is located in the front layer, and the second transmitter 4 is located in the rear layer. A first receiver array 6 is arranged on the right side of the front layer, and a second receiver array 7 is arranged on the upper side of the rear layer. The first transmitter 3 and the first receiver array 6 form the first fan-shaped light curtain 8 through light transmission and reception. Figure 1 The inner part of the quadrilateral (lower right part), the second transmitter 4 and the second receiver array 7 form the second fan-shaped light curtain 11 through corresponding light transmission and reception. Figure 1(The inner part of the square, upper left part).

[0021] The combination of the first fan-shaped light curtain 8 and the second fan-shaped light curtain 11 covers the entire optical detection coordinate plane. The overlapping area B of the light curtains is formed by rotating or parallel shifting either the first fan-shaped light curtain 8 or the second fan-shaped light curtain 11. Figure 1 The middle part is a parallel offset method. For example, the second fan-shaped light curtain 11 is offset downwards by a parallel distance C. Figure 2 The rotational offset method is used; for example, the second sector light curtain 11 is rotated and offset to the right by an offset angle A. A third transmitter and a fourth transmitter are located at the lower right corner 5 of the three-dimensional spatial structure 1. The third transmitter is located in the front layer, and the fourth transmitter is located in the rear layer. A third receiver array is located on the upper side of the front layer, and a fourth receiver array is located on the left side of the rear layer. The third transmitter and the third receiver array form the third sector light curtain through light transmission and reception, and the fourth transmitter and the fourth receiver array form the fourth sector light curtain through light transmission and reception. The third and fourth sector light curtains overlap to form a light curtain overlap area. The combination of the third and fourth sector light curtains covers the entire optical detection coordinate plane.

[0022] The first receiver array 6, the second receiver array 7, the third receiver array, and the fourth receiver array each have independent optical path sealing, or are combined with optical path sealing. The first transmitter 3, the first receiver array 6, the third transmitter, and the third receiver array are located on the same plane within the front layer. The second transmitter 4, the second receiver array 7, the fourth transmitter, and the fourth receiver array are located on the same plane within the rear layer. The first receiver array 6, the second receiver array 7, the third receiver array, and the fourth receiver array all have a double-layer staggered dense arrangement structure for the receivers.

[0023] It is hereby indicated that the above description is intended to help those skilled in the art to understand the present invention, but is not intended to limit the scope of protection of the present invention. Any equivalent substitutions, modifications, improvements, and / or simplifications of the above description that do not depart from the essence of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A superimposed combined light curtain electronic target system, characterized in that, The system includes a three-dimensional spatial structure with an internal optical detection coordinate surface. The optical detection coordinate surface includes a first fan-shaped light curtain and a second fan-shaped light curtain representing the same parameter. The first fan-shaped light curtain and the second fan-shaped light curtain are connected to each other to form an overlapping area. The first boundary line of the overlapping area itself is the light ray from the first fan-shaped light curtain, and the second boundary line of the overlapping area itself is the light ray from the second fan-shaped light curtain. The first boundary line is located inside the second fan-shaped light curtain, and the second boundary line is located inside the first fan-shaped light curtain. The three-dimensional spatial structure includes a front layer and a rear layer. A first transmitter and a second transmitter are arranged at the lower left corner of the three-dimensional spatial structure. The first transmitter is located in the front layer, and the second transmitter is located in the rear layer. A first receiver array is arranged on the right side of the front layer, and a second receiver array is arranged on the upper side of the rear layer. The first transmitter and the first receiver array form a first fan-shaped light curtain through light transmission and reception, and the second transmitter and the second receiver array form a second fan-shaped light curtain through light transmission and reception. The overlapping area of ​​the light curtains allows the impact points at the junction to be completely included within one of the fan-shaped light curtains, thus avoiding the selection difficulties caused by the coordinate parameters of the impact points near the junction line.

2. The overlapping combined light curtain electronic target system according to claim 1, characterized in that, The combination of the first and second sector light curtains covers the entire optical detection coordinate plane.

3. The overlapping combined light curtain electronic target system according to claim 1, characterized in that, The overlapping area of ​​the light curtain is formed by rotating or parallel shifting the first or second fan-shaped light curtain.

4. The overlapping combined light curtain electronic target system according to claim 1, characterized in that, A third transmitter and a fourth transmitter are located at the lower right corner of the three-dimensional spatial structure. The third transmitter is located in the front layer, and the fourth transmitter is located in the rear layer. A third receiver array is located on the upper side of the front layer, and a fourth receiver array is located on the left side of the rear layer. The third transmitter and the third receiver array form a third fan-shaped light curtain through light transmission and reception, and the fourth transmitter and the fourth receiver array form a fourth fan-shaped light curtain through light transmission and reception. The third and fourth fan-shaped light curtains are interconnected to form an overlapping area.

5. The overlapping combined light curtain electronic target system according to claim 4, characterized in that, The combination of the third and fourth sector light curtains covers the entire optical detection coordinate plane.

6. The overlapping combined light curtain electronic target system according to claim 4, characterized in that, The first receiver array, the second receiver array, the third receiver array, and the fourth receiver array each have independent optical path sealing, or they can be combined with optical path sealing.

7. The overlapping combined light curtain electronic target system according to claim 4, characterized in that, The first transmitter, the first receiver array, the third transmitter, and the third receiver array are located on the same plane within the front layer.

8. The overlapping combined light curtain electronic target system according to claim 4, characterized in that, The second transmitter, the second receiver array, the fourth transmitter, and the fourth receiver array are located on the same plane within the rear layer.

9. The overlapping combined light curtain electronic target system according to claim 1, characterized in that, Both the first receiver array and the second receiver array have a double-layer staggered dense arrangement structure in front of and behind the receiver.

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