CN115079094B - Device and method for testing shot point position of integrated acousto-optic composite detection - Google Patents
Device and method for testing shot point position of integrated acousto-optic composite detection Download PDFInfo
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Abstract
The invention provides a device and a method for testing the explosion point position of a projectile by integrated acousto-optic composite detection, which belong to the field of photoelectric testing and comprise a signal acquisition and processing module and two groups of acousto-optic composite testing modules connected through a telescopic slide plate; each group of acousto-optic composite test modules comprises a base and telescopic frames arranged on two sides of the base; the photoelectric detection module is arranged in the middle of the top of the base; the two acoustic sensors are symmetrically arranged on the two telescopic frames; the signal acquisition and processing module receives the shot explosion sound signals detected by the four acoustic sensors and the shot signals detected by the two photoelectric detection modules, processes the signals to extract the time values of the shot explosion sound signals detected by the four acoustic sensors, and calculates the space position of the shot point and the flying speed of the shot according to the two time values. The method can obtain the near-explosion multi-parameter information of the projectile with high precision, and provides reliable data and analysis basis for sustainable development of weapons.
Description
Technical Field
The invention relates to the technical field of photoelectric testing, in particular to a device and a method for testing the explosion point position of a projectile by integrated acousto-optic composite detection.
Background
How to maximize the destruction effect of ammunition becomes the most popular research direction in the development of weapons in various countries, how to exert the maximum killing effect of ammunition, and the control of the optimal detonation position of the projectile is a research hotspot in the development of modern weapons, so that the research of fuze technology has an indispensable pushing effect on the improvement of the weapon system level. Fuzes are an important component of weapon systems, and fuzes that detonate when a projectile approaches a target to a certain extent are called proximity fuzes, which utilize their own transmit and receive echo signal strengths to control an internal initiation device to detonate the projectile. Measuring the explosive position of the proximity fuse in the projectile relative to the target head provides an important reference for the improved development of the fuse. Because the rapid development of modern wars and the complexity of environments in the battlefield also put higher demands on the performance of various proximity fuzes, how to control the detonation time, detonation position, detonation direction and the like of rocket projectiles becomes the focus of fuze technical research, and especially, measuring the near-ground explosion point height of the projectiles plays a very important role in researching and improving the fuze technology and detecting the quality of weapon performance.
The common photoelectric measurement method comprises a CCD intersection measurement method and a high-speed photography method, and takes a double CCD intersection measurement method as an example, the method has the biggest characteristics of higher measurement precision, and the premise is that the arrangement is accurate, the field arrangement is difficult to achieve in an actual test field, so that the coincidence degree of a detection plane is higher, the coincidence degree of the detection plane influences the test precision, and the cost of the test method is higher. The high-speed shooting method only obtains the two-dimensional coordinates of the shot point by shooting a plurality of pieces of image information of the shot explosion moment and utilizing the imaging information of the shot explosion in the image and the actual arrangement position of the high-speed camera on the spot. Compared with a photoelectric measurement method, the acoustic measurement method based on the passive acoustic detection technology is simpler in principle, low in cost and easy to realize, and a plurality of acoustic sensor arrays with a certain geometric relationship are arranged on the ground to receive acoustic signals sent by weapon pellets in the moment of air explosion, so that three-dimensional coordinate information of the positions of the explosion points of the pellets can be obtained, the flight track of the pellets does not need to be tracked, and as long as the pellets enter a test airspace and are not influenced by the characteristics and ballistic characteristics of the pellets, the test work can be carried out in the environment of heavy fog weather and night; the test region is complex, such as complex topography like hills and deep forests is less affected and is not interfered by electrons; in addition, the test equipment formed by the acoustic measurement method has the characteristics of low production cost, convenience in transportation, flexibility in arrangement and the like.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides an integrated sound-light composite detection device for testing the explosion point position of a projectile.
In order to achieve the above object, the present invention provides the following technical solutions:
the integrated sound-light composite detection projectile explosion point position testing device comprises a signal acquisition and processing module and two groups of sound-light composite testing modules;
each group of the acousto-optic composite test modules comprises:
The base and the telescopic frames are arranged on two sides of the base, and the bases of the two groups of acousto-optic composite test modules are connected through telescopic sliding plates;
the photoelectric detection modules are arranged in the middle of the top of the base, the photoelectric detection modules of the two groups of acousto-optic composite test modules form sector detection planes which are parallel to each other, and the sector detection planes are orthogonal to the ballistic line;
the two acoustic sensors are symmetrically arranged on the two telescopic frames;
The signal acquisition and processing module receives four shot explosion sound signals detected by the acoustic sensors and shot signals detected by the two photoelectric detection modules, processes the signals to extract time values of the shot explosion sound signals detected by the four acoustic sensors, and brings in a shot space position calculation model and a shot flight speed calculation function of an acoustic sensor array layout formed by the four acoustic sensors to obtain the shot space position and the shot flight speed.
Preferably, the acousto-optic composite test module includes:
The test module body is arranged in the middle of the top of the base;
The optical lenses are arranged at the top of the testing module body, the optical lenses of the two groups of photoelectric detection modules form sector detection planes which are parallel to each other, and the sector detection planes are orthogonal to the ballistic line;
the multi-element array photoelectric detection sensor is arranged in the test module body and is positioned right below the optical lens; the acoustic sensor and the multi-element array photoelectric detection sensor are in communication connection with the signal acquisition and processing module through a wireless module.
Preferably, the photoelectric detection module further comprises a self-adaptive adjusting circuit and a signal processing module which are electrically connected with the multi-element array photoelectric detection sensor in sequence, and the signal processing module transmits signals to the signal acquisition and processing module through the wireless module.
Preferably, a diaphragm slit is arranged between the optical lens and the multi-element array photoelectric detection sensor.
Preferably, the longitudinal section of base is the type of falling U, every expansion bracket includes:
The two motors are arranged at the top of the base, and the output shafts of the motors penetrate through the base and are connected with gears in a transmission way;
the two telescopic rods are respectively connected with the bottom of the base in a sliding way, and racks meshed with the two gears are respectively arranged on the inner sides of the two telescopic rods;
And two ends of the connecting rod are respectively connected with the outer ends of the two telescopic rods, and the acoustic sensor is arranged on the connecting rod.
Preferably, scale I is arranged on the telescopic rod, scale II is arranged on the telescopic slide plate, the telescopic slide plate adjusts the distance between the two groups of acousto-optic composite test modules, and the distance between the acoustic sensors between the two groups of acousto-optic composite test modules and the distance between the two photoelectric detection modules are measured through the scale II.
Preferably, the test module body is further provided with a power module, a display screen and a function button, the function button is provided with an amplification gain of the self-adaptive adjusting circuit, and the display screen displays the output voltage and current of the photoelectric detection module under the current test environment condition; the power module supplies power to the photoelectric detection module and the acoustic sensor at the same time.
Preferably, two mutually perpendicular levels are arranged at the top of the test module body.
Preferably, the bottom four corners of base all are equipped with the footing, the footing pass through the double-screw bolt with the base spiro union, the double-screw bolt upper end passes the base spiro union has the knob, through the rotation of knob adjustment footing height, realizes the level of acousto-optic composite test module and ground.
Another object of the present invention is to provide a method for testing a shot point position testing device of integrated acousto-optic composite detection, wherein the shot point position testing device of integrated acousto-optic composite detection is arranged on the ground before testing, the distance between the shot point position testing device and an aerial target is closer, the distance between the shot point position testing device and a weapon emission position is farther, and four acoustic sensors of the testing device form an acoustic sensor array, comprising the following steps:
After the weapon emits the projectile, the two acousto-optic composite test modules are triggered synchronously to start working, when the projectile explodes in the detectable area of the acoustic sensor array, the projectile passes through two fan-shaped detection planes, the multi-array photoelectric detection sensor of the photoelectric detection module transmits detected signals to the signal acquisition and processing module, and the time value of the real projectile signal passing through the fan-shaped detection planes is extracted through the signal processing and the constraint relation of the two fan-shaped detection planes; wherein, the time value of the pill signal passing through the first fan-shaped detection plane is defined as t 1, the time value of the pill signal passing through the second fan-shaped detection plane is defined as t 2, the distance d 1 between the two acousto-optic composite test modules is the flying speed of the pill
The distance d 2 between two acoustic sensors in the same acousto-optic composite test module takes the center point of the four-corner acoustic detection array as the origin, the distances between the four acoustic sensors M 1、M2、M3 and M 4 and the origin are all R, andThe connecting line between the acoustic sensors M 1 and M 2 in the parallel same acousto-optic composite test module is taken as an x-axis, and the pointing direction M 2 is taken as a positive direction; taking an acoustic sensor connecting line between two parallel acousto-optic composite test modules as a y-axis, and pointing to M 3 or M 4 as a positive direction; establishing a z-axis according to a right-hand coordinate system principle, and establishing a shot point position coordinate system oxyz with the upward direction being the positive direction; the coordinates of the four acoustic sensors M 1、M2、M3 and M 4 are (-d 2/2,-d1/2,0),(d2/2,-d1/2,0),(-d2/2,d1/2, 0) and (d 2/2,d1/2, 0), respectively; the distance from the shot point to the origin of the coordinate system is r, and the distance from the shot point to the acoustic sensor M 1 is r 1; the sound path differences to the other acoustic sensors M 2、M3 and M 4 are d 12,d13 and d 14, respectively, based on the propagation time of the shot blast sound to acoustic sensor M 1; the propagation time required for the acoustic signal of the shot blast at the shot blast instant to propagate to the acoustic sensor M 1 is t 1, and the time difference between the propagation time to the other acoustic sensors M 2、M3 and M 4 and the propagation time to the acoustic sensor M 1 is respectively: t 12,t13,t14, c is the speed of the transmission of the shot blast sound in the air; establishing a correlation calculation model between the acoustic sensor positions, the propagation time differences between the acoustic sensors and the shot point positions P (x, y, z), as shown in formula (1);
wherein,
Defining an aerial target coordinate system as o 1x1y1z1, taking the head of the target as an origin o 1 of the coordinate system o 1x1y1z1, and the vertical height of the target and the ground is H; the coordinate system oxyz of the testing device and the aerial target coordinate system o 1x1y1z1 have certain deviation, the o-point coordinate of the coordinate oxyz taking the center of the testing device as the origin is set to be (0, 0), the coordinate of the origin o 1 of the aerial target coordinate system o 1x1y1z1 is set to be (R 1,R2, H), and therefore, the calculation function of the position P' (x 1,y1,z1) of the projectile close-frying relative target is shown as a formula (2);
The device and the method for testing the shot point position of the integrated acousto-optic composite detection have the following beneficial effects:
the invention utilizes an integrated structure to construct an acousto-optic composite test module taking an acoustic sensor and a photoelectric detection module as cores, combines the two acousto-optic composite test modules through a telescopic sliding plate to form an integrated test system, forms a parallel fan-shaped detection plane for detecting the flying speed of the projectile according to the photoelectric detection module, and forms a test area for testing the explosion position of the projectile based on an acoustic sensor array; the device and the method for testing the shot point position of the integrated acousto-optic composite detection can obtain the near-explosion multi-parameter information of the shot with high precision, and provide reliable data and analysis basis for sustainable development of weapons.
Drawings
In order to more clearly illustrate the embodiments of the present invention and the design thereof, the drawings required for the embodiments will be briefly described below. The drawings in the following description are only some of the embodiments of the present invention and other drawings may be made by those skilled in the art without the exercise of inventive faculty.
FIG. 1 is a state diagram of the use of the device for testing the location of the shot point of the integrated acousto-optic composite detection in the embodiment of the invention;
FIG. 2 is a schematic structural diagram of an integrated acousto-optic composite detection device for testing the location of a shot point according to an embodiment of the present invention;
FIG. 3 is a top view of a test device according to an embodiment of the present invention;
FIG. 4 is a side view of a test device according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a panel of an acousto-optic composite test module according to an embodiment of the invention;
FIG. 6 is a signal transmission block diagram of an embodiment of the present invention;
fig. 7 is a schematic representation of a shot point location coordinate system established based on a quadrangle acoustic detection array in accordance with an embodiment of the present invention.
Reference numerals illustrate:
The acousto-optic composite testing module 1, a fan-shaped detection plane 2, a computer 3, a base 4, a telescopic frame 5, a motor 501, a gear 502, a telescopic rod 503, a connecting rod 504, a scale I505, a rack 506, a telescopic slide plate 6, a photoelectric detection module 7, a testing module body 701, an optical lens 702, a multi-array photoelectric detection sensor 703, an acoustic sensor 8, a scale II9, a wireless module 10, a signal processing module 11, a power module 12, an adaptive adjustment circuit 13, a display screen 14, a function button 15, a level meter 16, a foot 17, a knob 18 and a diaphragm slit 19.
Detailed Description
The present invention will be described in detail below with reference to the drawings and the embodiments, so that those skilled in the art can better understand the technical scheme of the present invention and can implement the same. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the technical solutions of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless explicitly specified or limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more, and will not be described in detail herein.
Example 1
The invention provides a shot point position testing device for integrated acousto-optic composite detection, which is specifically shown in figures 1 to 6 and comprises a signal acquisition and processing module and two groups of acousto-optic composite testing modules 1; the two groups of acousto-optic composite test modules 1 are placed in parallel at a certain distance through a telescopic sliding plate 6, and the signal acquisition and processing modules are integrated in a computer 3 for testing.
Each group of acousto-optic composite test modules 1 comprises a base 4, telescopic frames 5 arranged on two sides of the base 4, a photoelectric detection module 7 and two acoustic sensors 8. The bases 4 of the two groups of acousto-optic composite test modules 1 are connected through a telescopic slide plate 6; the photoelectric detection modules 7 are arranged in the middle of the top of the base 4, the photoelectric detection modules 7 of the two groups of acousto-optic composite test modules 1 form mutually parallel sector detection planes 2, and the sector detection planes 2 are orthogonal to the ballistic line; the two acoustic sensors 8 are symmetrically arranged on the two telescopic frames 5. The telescopic slide plate 6 in the embodiment is an existing telescopic plate with adjustable length, and the distance between the two groups of acousto-optic composite test modules 1 can be adjusted through the telescopic slide plate 6.
According to two groups of acousto-optic composite test modules which are mutually parallel along the ballistic line, four acoustic sensors form a quadrangle acoustic detection array; when the pellets explode in a test area formed by the four-angle acoustic detection array, according to the time difference of the four acoustic sensors sensing the explosion acoustic signals of the pellets, the position information of the explosion points of the pellets can be obtained, in addition, when the pellets fly through two fan-shaped detection planes, the two photoelectric detection modules detect the information of flying pellets, the time value of the pellet signals is obtained through a signal processing method, and the space position calculation model of the explosion points of the pellets and the calculation function of the flying speeds of the pellets are brought into the acoustic sensor array layout, so that the speed of flying pellets is calculated.
The signal acquisition and processing module receives the shot explosion sound signals detected by the four acoustic sensors 8 and the shot signals detected by the two photoelectric detection modules 7, processes the signals to extract the time values of the shot explosion sound signals detected by the four acoustic sensors 8 and the time values of the shots passing through the two fan-shaped detection planes, and brings the shot explosion point space position calculation model and the shot flight speed calculation function of the array layout of the acoustic sensors 8 to obtain the shot explosion point space position and the shot flight speed.
Further, as shown in fig. 4 and 6, in the present embodiment, the acousto-optic composite testing module 1 includes a testing module body 701, an optical lens 702, and a multi-array photoelectric detection sensor 703. The test module body 701 is arranged in the middle of the top of the base 4; the optical lens 702 is disposed on top of the testing module body 701, and the optical lens of the optical lens 702 is disposed upwards. The multi-array photoelectric detection sensor 703 is disposed inside the test module body 701 and below the optical lens 702; the acoustic sensor 8 and the multi-element array photo-detector sensor 703 are communicatively coupled to the signal acquisition and processing module via a wireless module 10. Meanwhile, in order to process the information collected by the multi-element array photoelectric detection sensor 703, the photoelectric detection module 7 of this embodiment further includes an adaptive adjustment circuit 13 and a signal processing module 11 that are electrically connected in sequence with the multi-element array photoelectric detection sensor 703, where the signal processing module 11 transmits signals to the signal collecting and processing module through the wireless module 10. In order to improve the accuracy of optical signal acquisition, a diaphragm slit 19 is disposed between the optical lens 702 and the multi-array photoelectric detection sensor 703 in this embodiment.
In this embodiment, as shown in fig. 2 and 3, the longitudinal section of the base 4 is inverted U-shaped, and each expansion bracket 5 includes two motors 501, two expansion links 503, and a connecting rod 504. The two motors 501 are arranged at the top of the base 4, and the output shafts of the motors penetrate through the base 4 and are connected with gears 502 in a transmission way; the two telescopic rods 503 are respectively connected with the bottom of the base 4 in a sliding way, and racks 506 meshed with the two gears 502 are respectively arranged on the inner sides of the two telescopic rods 503; the two ends of the connecting rod 504 are respectively connected with the outer ends of the two telescopic rods 503, and the acoustic sensor 8 is arranged on the connecting rod 504. The gear 502 is driven to rotate by forward rotation or overturning of the motor 501, and the gear 502 drives the rack 506 meshed with the gear to move towards the base 4 or away from the base 4, so that the distance between the connecting rod 504 and the base 4 is adjusted, and the purpose of adjusting the position of the acoustic sensor 8 is achieved.
For convenience in testing distance, in this embodiment, scale I505 is provided on telescopic rod 503, scale II9 is provided on telescopic slide plate 6, and telescopic slide plate 6 adjusts the interval between two groups of acousto-optic composite test modules 1, and the distance of acoustic sensor 8 between two groups of acousto-optic composite test modules 1 and the distance between two photoelectric detection modules 7 are measured through scale II9, and the moving distance is conveniently watched through scale I505 and scale II 9.
The gear 502 is meshed with the rack 506 on the telescopic rod 503 through the rotation of the motor 501 in different rotation directions, so that the telescopic rod 503 is contracted; the telescopic rod 503 is provided with the acoustic sensors 8, the telescopic rod 503 is adjusted to stretch, and the distance between the two acoustic sensors 8 in the same acousto-optic composite test module can be obtained through the scale I505 on the telescopic rod 503. The distance between the two groups of acousto-optic composite test modules and the distance between the two photoelectric detection modules are obtained according to the scale II 9 by adjusting the distance of the telescopic slide plate 6, and the distance of the acoustic sensor between the two groups of acousto-optic composite test modules and the distance between the two photoelectric detection modules are also obtained.
For convenience, as shown in fig. 5, in this embodiment, the test module body 701 is further provided with a power module 12, a display screen 14 and a function button 15, the function button 15 sets an amplification gain of the adaptive adjustment circuit 13, and the display screen 14 displays the output voltage and current of the photoelectric detection module 7 under the current test environmental condition; the power supply module 12 supplies power to both the photo-detection module 7 and the acoustic sensor 8.
In order to ensure the levelness of the acousto-optic composite test module 1 during the test, in this embodiment, two mutually perpendicular level gauges 16 are disposed on the top of the test module body 701. Footing 17 is arranged at four corners of the bottom of the base 4, the footing 17 is in threaded connection with the base 4 through a stud, and a knob 18 is in threaded connection with the upper end of the stud through the base 4. Whether the acousto-optic composite test module 1 has the ground parallel or not can be detected through the two level gauges 16, when the levelness does not meet the requirement, the levelness of the test module body 10 is adjusted through the rotation of the knob 18 and the levelness of the test module body 10 is adjusted, so that the acousto-optic composite test module 1 and the ground are horizontal, and the sector detection plane 2 of the scale I is vertical to the horizontal ground.
Another object of the present invention is to provide a method for testing the location of a shot point of integrated acousto-optic composite detection, comprising the steps of:
Before testing, the integrated sound-light combined detection shot point position testing system is arranged on the ground, and is closer to an aerial target and farther from a weapon emission position. The distance between the two groups of acousto-optic composite test modules 1 is adjusted to a set distance through the telescopic sliding plate 6; and by adjusting the length of the telescopic frame 5, the positions of the four acoustic sensors 8 are adjusted, and the four acoustic sensors 8 form an acoustic sensor array.
Step 2, after the weapon launches the projectile, trigger two acousto-optic compound test modules 1 to start working synchronously, as shown in figure 7, when the projectile explodes in the area that the acoustic sensor 8 array can detect, the projectile passes two fan-shaped detection planes, the photoelectric detection module 7 transmits the detected signal to the signal acquisition and processing module, extract the moment value that the real projectile signal passes the fan-shaped detection plane through the constraint relation of signal processing and two fan-shaped detection planes; wherein, the time value of the pill signal passing through the first fan-shaped detection plane is defined as t 1, the time value of the pill signal passing through the second fan-shaped detection plane is defined as t 2, the distance d 1 between the two acousto-optic composite test modules 1 is the flying speed of the pill
Step 3, the distance d 2 between two acoustic sensors 8 in the same acousto-optic composite test module 1 takes the center point of the four-corner acoustic detection array as the origin, the distances between the four acoustic sensors M 1、M2、M3 and M 4 and the origin are all R, andThe connecting line between the acoustic sensors M 1 and M 2 in the parallel same acousto-optic composite test module 1 is taken as an x axis, and the pointing direction M 2 is taken as a positive direction; the acoustic sensor connecting line between the two parallel acousto-optic composite test modules 1 is taken as a y axis, and the direction M 3 or M 4 is taken as a positive direction; establishing a z-axis according to a right-hand coordinate system principle, and constructing a shot point position coordinate system oxyz with positive upward direction, wherein the coordinates of the four acoustic sensors M 1、M2、M3 and M 4 are (-d 2/2,-d1/2,0),(d2/2,-d1/2,0),(-d2/2,d1/2, 0) and (d 2/2,d1/2, 0) respectively; the distance from the shot point to the origin of the coordinate system is r, and the distance from the shot point to the acoustic sensor M 1 is r 1; the sound path differences to the other acoustic sensors M 2、M3 and M 4 are d 12,d13 and d 14, respectively, based on the propagation time of the shot blast sound to acoustic sensor M 1; the propagation time required for the acoustic signal of the shot blast at the shot blast instant to propagate to the acoustic sensor M 1 is t 1, and the time difference between the propagation time to the other acoustic sensors M 2、M3 and M 4 and the propagation time to the acoustic sensor M 1 is respectively: t 12,t13,t14, c is the speed of the transmission of the shot blast sound in the air; establishing a correlation calculation model between the acoustic sensor positions, the propagation time differences between the acoustic sensors and the shot point positions P (x, y, z), as shown in formula (1);
wherein,
Defining an aerial target coordinate system as o 1x1y1z1, taking the head of the target as an origin o 1 of the coordinate system o 1x1y1z1, and the vertical height of the target and the ground is H; the coordinate system oxyz of the testing device and the aerial target coordinate system o 1x1y1z1 have certain deviation, the o-point coordinate of the coordinate oxyz taking the center of the testing device as the origin is set to be (0, 0), the coordinate of the origin o 1 of the aerial target coordinate system o 1x1y1z1 is set to be (R 1,R2, H), and therefore, the calculation function of the position P' (x 1,y1,z1) of the projectile close-frying relative target is shown as a formula (2);
The invention provides a device and a method for testing the explosion point position of a projectile by integrated acousto-optic composite detection, which are characterized in that an acoustic sensor and an acousto-optic composite test module of a photoelectric detection module taking a photoelectric detector as a core are constructed by utilizing an integrated structure, two acousto-optic composite test modules are combined through a telescopic sliding plate to form an integrated test system, a parallel fan-shaped detection plane for detecting the flight speed of the projectile is formed according to the photoelectric detection module, and a test area for testing the explosion position of the projectile is formed based on an acoustic sensor array; the device and the method for testing the shot point position of the integrated acousto-optic composite detection can obtain the near-explosion multi-parameter information of the shot with high precision, and provide reliable data and analysis basis for sustainable development of weapons.
The above embodiments are merely preferred embodiments of the present invention, the protection scope of the present invention is not limited thereto, and any simple changes or equivalent substitutions of technical solutions that can be obviously obtained by those skilled in the art within the technical scope of the present invention disclosed in the present invention belong to the protection scope of the present invention.
Claims (8)
1. The integrated sound-light composite detection projectile point position testing device is characterized by comprising a signal acquisition and processing module and two groups of sound-light composite testing modules (1);
each group of the acousto-optic composite test modules (1) comprises:
The test device comprises a base (4) and telescopic frames (5) arranged on two sides of the base (4), wherein the bases (4) of two groups of the acousto-optic composite test modules (1) are connected through telescopic sliding plates (6);
The photoelectric detection modules (7) are arranged in the middle of the top of the base (4), the photoelectric detection modules (7) of the two groups of the acousto-optic composite test modules (1) form sector detection planes (2) which are parallel to each other, and the sector detection planes (2) are orthogonal to the ballistic lines;
The two acoustic sensors (8) are symmetrically arranged on the two telescopic frames (5);
the signal acquisition and processing module receives the shot explosion sound signals detected by the four acoustic sensors (8) and the shot signals detected by the two photoelectric detection modules (7), processes the signals to extract the time values of the shot explosion sound signals detected by the four acoustic sensors (8) and the time values of the shots passing through the two fan-shaped detection planes, and calculates to obtain the space position of shot explosion points and the flying speed of the shots;
The photodetection module (7) includes:
the test module body (701) is arranged in the middle of the top of the base (4);
The optical lenses (702) are arranged at the top of the test module body (701), the optical lenses (702) of the two groups of photoelectric detection modules (7) form sector detection planes (2) which are parallel to each other, and the sector detection planes (2) are orthogonal to ballistic lines;
A multi-array photoelectric detection sensor (703) arranged inside the test module body (701) and positioned under the optical lens (702); the acoustic sensor (8) and the multi-element array photoelectric detection sensor (703) are in communication connection with the signal acquisition and processing module through a wireless module (10);
The photoelectric detection module (7) further comprises a self-adaptive adjusting circuit (13) and a signal processing module (11) which are electrically connected with the multi-element array photoelectric detection sensor (703) in sequence, and the signal processing module (11) transmits signals to the signal acquisition and processing module through the wireless module (10).
2. The device for testing the shot point position of integrated acousto-optic composite detection according to claim 1, wherein a diaphragm slit (19) is arranged between the optical lens (702) and the multi-array photoelectric detection sensor (703).
3. The device for testing the explosion point of the projectile by integrated acousto-optic composite detection according to claim 1, wherein the longitudinal section of the base (4) is of an inverted U shape, and each telescopic frame (5) comprises:
the two motors (501) are arranged at the top of the base (4), and the output shafts of the motors penetrate through the base (4) and are connected with gears (502) in a transmission way;
The two telescopic rods (503) are respectively connected with the bottom of the base (4) in a sliding manner, and racks (506) meshed with the two gears (502) are respectively arranged on the inner sides of the two telescopic rods (503);
and the two ends of the connecting rod (504) are respectively connected with the outer ends of the two telescopic rods (503), and the acoustic sensor (8) is arranged on the connecting rod (504).
4. The device for testing the explosion point of the projectile by integrated acousto-optic composite detection according to claim 3, wherein a scale I (505) is arranged on the telescopic rod (503), a scale II (9) is arranged on the telescopic slide plate (6), the telescopic slide plate (6) adjusts the interval between two groups of acousto-optic composite test modules (1), and the distance between acoustic sensors (8) between the two groups of acousto-optic composite test modules (1) and the distance between two photoelectric detection modules (7) are measured through the scale II (9).
5. The integrated acousto-optic composite detection projectile point position testing device according to claim 1, wherein a power module (12), a display screen (14) and a function button (15) are further arranged on the testing module body (701), the function button (15) is provided with an amplification gain of the self-adaptive adjusting circuit (13), and the display screen (14) displays output voltage and current of the photoelectric detection module (7) under the current testing environment condition; the power supply module (12) supplies power to the photoelectric detection module (7) and the acoustic sensor (8) at the same time.
6. The device for testing the shot point position of the integrated acousto-optic composite detection according to claim 1, wherein two mutually perpendicular level gauges (16) are arranged on the top of the testing module body (701).
7. The device for testing the explosion point of the projectile by integrated acousto-optic composite detection according to claim 6, wherein feet (17) are arranged at four corners of the bottom of the base (4), the feet (17) are in threaded connection with the base (4) through studs, a knob (18) is in threaded connection with the upper ends of the studs through the base (4), and the level of the acousto-optic composite testing module (1) and the ground is achieved by adjusting the height of the feet through rotation of the knob (18).
8. Testing method of an integrated acousto-optic composite detection shot point location parameter testing device according to any of the claims 2 to 7, the four acoustic sensors (8) of the testing device constituting an acoustic sensor array, characterized in that it comprises the steps of:
after the weapon launches the projectile, trigger two acousto-optic compound test modules (1) to start working synchronously, when the projectile explodes in the area that the acoustic sensor array can detect, the projectile passes two fan-shaped detection planes, the multiple array photoelectric detection sensor (703) of the photoelectric detection module (7) transmits the detected signal to the signal acquisition and processing module, extract the moment value that the real projectile signal passes the fan-shaped detection plane through the constraint relation of signal processing and two fan-shaped detection planes; wherein, the time value of the pill signal passing through the first fan-shaped detection plane is defined as t 1, the time value of the pill signal passing through the second fan-shaped detection plane is defined as t 2, the distance d 1 between the two acousto-optic composite test modules (1) is defined as the flying speed of the pill
The distance d 2 between two acoustic sensors (8) in the same acousto-optic composite test module (1) takes the center point of a four-corner acoustic detection array as an origin, the distances between the four acoustic sensors M 1、M2、M3 and M 4 and the origin are all R, andThe connecting line between the acoustic sensors M 1 and M 2 in the parallel same acousto-optic composite test module (1) is taken as an x-axis, and the pointing direction M 2 is taken as a positive direction; the acoustic sensor connecting line between the two parallel acousto-optic composite test modules (1) is taken as a y axis, and the direction M 3 or M 4 is taken as a positive direction; establishing a z-axis according to a right-hand coordinate system principle, and establishing a shot point position coordinate system oxyz with the upward direction being the positive direction; the coordinates of the four acoustic sensors M 1、M2、M3 and M 4 are (-d 2/2,-d1/2,0),(d2/2,-d1/2,0),(-d2/2,d1/2, 0) and (d 2/2,d1/2, 0), respectively; the distance from the shot point to the origin of the coordinate system is r, and the distance from the shot point to the acoustic sensor M 1 is r 1; the sound path differences to the other acoustic sensors M 2、M3 and M 4 are d 12,d13 and d 14, respectively, based on the propagation time of the shot blast sound to acoustic sensor M 1; the propagation time required for the acoustic signal of the shot blast at the shot blast instant to propagate to the acoustic sensor M 1 is t 1, and the time difference between the propagation time to the other acoustic sensors M 2、M3 and M 4 and the propagation time to the acoustic sensor M 1 is respectively: t 12,t13,t14, c is the speed of the transmission of the shot blast sound in the air; establishing a correlation calculation model between the acoustic sensor positions, the propagation time differences between the acoustic sensors and the shot point positions P (x, y, z), as shown in formula (1);
wherein,
Defining an aerial target coordinate system as o 1x1y1z1, taking the head of the target as an origin o 1 of the coordinate system o 1x1y1z1, and the vertical height of the target and the ground is H; the coordinate system oxyz of the testing device and the aerial target coordinate system o 1x1y1z1 have certain deviation, the o-point coordinate of the coordinate oxyz taking the center of the testing device as the origin is set to be (0, 0), the coordinate of the origin o 1 of the aerial target coordinate system o 1x1y1z1 is set to be (R 1,R2, H), and therefore, the calculation function of the position P' (x 1,y1,z1) of the projectile close-frying relative target is shown as a formula (2);
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