CN115638697A - All-time enhanced external ballistic parameter measurement device and method - Google Patents

Abstract

The invention belongs to the technical field of target range testing, and particularly relates to an all-time enhanced type outer ballistic parameter measuring device and method. The device includes infrared ray transceiver, wireless data transmission device, computer and two unmanned aerial vehicles, and the sky curtain target is all installed to two unmanned aerial vehicle below, the sky curtain target-including the shell with its internal set firmly can form the lens group of N font light curtain. The luminous flux of the projectile entering the lens group through the N-shaped light curtain becomes small, and the change of the luminous flux is converted into an electric signal; the electric signal is calculated by a computer to obtain the information of the projectile. The invention has high safety factor, accurate measurement and wide application range, and can avoid using the infrared altimeter to influence the detection precision of the double N-shaped light curtain by pertinently selecting the ultrasonic altimeter. The device has the advantages of simple structure, low cost, convenience in carrying and operation, simple target arrangement, high position fault tolerance and great improvement on adaptability.

Description

All-time enhanced external ballistic parameter measurement device and method

The technical field is as follows:

the invention belongs to the technical field of target range testing, mainly relates to a canopy target measuring device for measuring the flight speeds of various caliber projectiles by adopting a photoelectric technology, and particularly relates to an all-day enhanced type outer ballistic parameter measuring device and method.

Background art:

in the development and production of guns, cannons, projectiles and propellant powder, the initial speed of a projectile is a key parameter which needs to be tested frequently. At present, a common method for producing a calibration target range is to form a speed measuring system by a region interception device and a time measuring instrument. The area-intercepting devices commonly used in domestic target ranges at present are coil targets, sky screen targets and light screen targets, and the coil targets, the sky screen targets and the light screen targets detect the moment when the shot passes through a detection area by adopting a non-contact measurement principle.

The existing sky screen target is generally carried out outdoors and cannot work at night because the working principle is limited and the sky with certain brightness must be aligned when the sky screen target is used. Some live-action tests using a backdrop target outdoors sometimes continue to dark due to various conditions, and there is a pressing need for a backdrop target that can work at night. Sometimes, the test is in a rainy or rainy day, and the dark clouds cover the sky, so that the sky brightness enough for the work of the backdrop target is influenced, and the test is interrupted. To sum up, in the middle of the practical test, need can not receive the canopy target of sky luminance influence to can work at night, conveniently remove the canopy target of use, to make the canopy target not receive the sky luminance influence, just must use artificial light source, make the background region that the canopy target visual field aims at become bright, and its luminance will be enough to guarantee the canopy target normal work. The common artificial light source usually uses an artificial light source with fixed brightness, the artificial light source in the whole system is the place with the highest power consumption ratio, the use of a high-power fixed light source can cause the waste of power consumption in the use process, and the use of a low-power light source can not ensure the normal work of the whole system, so that only the high-power light source can be used for ensuring the work of the system, and the waste of the power consumption is caused.

The sky screen target equipped with artificial light source can be used indoors and at night because it is not affected by sky brightness. For example, the sky-screen target light source mentioned in chinese patent ZL 200420086340.2 can satisfy the above requirements, but the layout of the light source is very difficult. Firstly, when the backdrop target is laid, two light curtains of the backdrop target are required to be separated by a certain target distance and parallel, and the configured artificial light sources must be strictly parallel and in the view field of the backdrop target, so that the difficulty in laying the backdrop target is increased; secondly, when the backdrop target is arranged below the trajectory, the light source needs to be erected right above the backdrop target, and the difficulty is higher. The XGK-2002 type light curtain target used in large area in domestic target range can work at night and can be used indoors and outdoors due to the adoption of the LED light source, but the light curtain target has limited target surface, and a frame for supporting an instrument is required to be used in a projectile passing area, so that the frame has the risk of being hit by projectiles, and the XGK-2002 type light curtain target cannot be used for some projectiles with clamping flaps and projectile bands.

To sum up, present speed measuring system exists the sky curtain target and can not use under the not enough condition of light source, and frame construction brings simultaneously and erects the degree of difficulty greatly, factor of safety is low, uses fixed high-power light source to cause shortcomings such as the consumption is extravagant. The search for a canopy target detection device and method which can supplement a light source and have no frame structure is the key research direction of technical personnel in the technical field by continuously improving a speed measuring device based on a canopy target.

The invention content is as follows:

the invention aims to provide an all-time enhanced type outer ballistic parameter measuring device and method, and aims to solve the problems that in the prior art, the device cannot be used under the condition of insufficient light sources, an attached frame structure is high in erection difficulty and low in safety coefficient, and power consumption is wasted due to the fact that a fixed light source is used.

An all-time enhanced outer ballistic parameter measuring device comprises an infrared ray receiving and transmitting device, a wireless data transmitting device, a computer and two unmanned aerial vehicles, wherein sky screen targets are arranged below the two unmanned aerial vehicles, and each sky screen target comprises a shell and a lens group which is fixedly arranged in the shell and can form an N-shaped light screen; altimeters are installed on the side surfaces of the four-rotor unmanned aerial vehicle, and an infrared receiving device and a wireless data receiving and transmitting device are respectively installed on the opposite side surfaces of the two unmanned aerial vehicles; the dot matrix LED lamp is arranged below the unmanned aerial vehicle, and the LED lamp light emitted by the dot matrix LED and the backdrop target are arranged on the same plane.

Furthermore, the lens group comprises a cylindrical shell, a lens is arranged in the cylindrical shell along the axis, and an N-shaped photodiode is arranged at the end part of the cylindrical shell.

Further, the unmanned aerial vehicle is a quad-rotor unmanned aerial vehicle; the altimeter is an ultrasonic altimeter.

Further, the measurement method of the all-time enhanced outer ballistic parameter measurement device comprises the following steps:

the two quad-rotor unmanned aerial vehicles fly above the dot-matrix LED, after the wireless data transmitting device is powered on, the altimeter transmits the current height H to the computer through the wireless data transmitting device, the computer adjusts the brightness of the dot-matrix LED according to the ultrasonic altimeter, the luminous flux of the shot entering the lens group through the N-shaped light curtain is reduced, the change of the luminous flux generates a corresponding shot passing-curtain signal through the computer, and the corresponding shot passing-curtain signal is converted into an electric signal through the lens; the electric signal transmits data to the computer through the wireless data transmitting device; the shot information can be obtained by the calculation of the data gathered by the computer.

Further, the formula for adjusting the brightness of the dot-matrix LED is

Wherein L is the brightness of the dot-matrix LED, F is the focal length of the lens, H is the height of the ultrasonic altimeter, F is the number of diaphragm, and E is the minimum luminous flux of the lens.

Further, the above calculation process is:

in the range of 7 target surfaces of the double N-shaped light curtain, the time for setting the shots to pass through 6 target surfaces of the N shape is t ₁ 、t ₂ 、t ₃ 、t ₄ 、t ₅ 、t ₆ . S is the distance between two lens groups, light curtain G ₁ And G ₂ Between them is alpha

Wherein the included angle between the projection of the velocity vector on the YOZ plane and the XOZ plane is as follows: gamma ray ₂ ，G ₂ And G ₅ The target distance of the formed speed measuring target is Scos beta. Further, the shot information includes a pitch angle θ, an azimuth angle γ, a velocity V, a coordinate amount X, and/or a coordinate amount y. Compared with the prior art, the invention has the following advantages:

(1) The safety coefficient is high: can be applicable to the trajectory detection of more shots through control unmanned aerial vehicle height-adjusting, avoid using frame construction to avoid the damage that the shot piece brought frame construction, the cost is practiced thrift in the change mutually, has also ensured personnel's safety.

(2) The measurement is accurate, and the application scope is wide: the height of the quad-rotor unmanned aerial vehicle and the brightness of the dot-matrix photoelectric tube can be adjusted according to different projectiles, so that the measurement is more accurate; the test can be carried out at night or under the condition that the light brightness is not enough, the influence of sky brightness change and day and night alternation is avoided, and the timeliness of the experiment is greatly improved.

(3) Based on the use environment of the invention, the ultrasonic altimeter is selected in a targeted manner, so that the influence of the infrared altimeter on the detection precision of the double N-shaped light curtain can be avoided.

(4) The device has the advantages of simple structure, low cost, convenience in carrying and operation, simple target arrangement, high position fault tolerance and great improvement on adaptability.

(5) The brightness of the dot-matrix LED is adjusted in real time according to the height, power consumption is saved, and meanwhile the method is adaptive to detection of various shot parameters.

Description of the drawings:

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a view in the direction A of FIG. 1;

fig. 3 is a bottom view of the quad-rotor drone of fig. 1;

FIG. 4 is a detailed view of the light curtain of the present invention;

FIG. 5 is a schematic diagram of the lens assembly of the present invention.

In the figure: 1. a dot-matrix LED lamp; 2. a quad-rotor unmanned aerial vehicle; 3. an infrared ray transmitting/receiving device; 4. an altimeter; 5. a wireless data transmission device; 6. a backdrop target; 7. an N-shaped light curtain; 8. a lens group; 9. LED light.

The specific implementation mode is as follows:

in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-3, an all-time enhanced external ballistic trajectory parameter measurement device comprises an infrared transceiver 3, an ultrasonic altimeter 4, a wireless data transmission device 5, a computer, a sky screen target 6 and two quad-rotor unmanned aerial vehicles 2. The canopy target 6 is installed to 2 below of two four rotor unmanned aerial vehicles said, canopy target 6 includes the shell and its internal set's the lens group 8 that can form N font light curtain 7, lens group 8 includes the column shell, is provided with lens along axis (light path direction) in the column shell, is provided with N font photodiode at column shell tip. Altimeters 4 are arranged on the side surfaces of the four-rotor unmanned aerial vehicles 2, and an infrared receiving device 3 and a wireless data transceiver 5 are respectively arranged on the opposite side surfaces of the two four-rotor unmanned aerial vehicles 2; dot matrix LED lamp 1 is in unmanned aerial vehicle's below, and LED light 9 that dot matrix LED1 sent is in the coplanar with sky curtain target 6.

The design principle of the invention is as follows: like figure 1, the 3 range finding of infrared ray receiving arrangement between two four rotor unmanned aerial vehicle 2 guarantees that two four rotor unmanned aerial vehicle 2 planes of locating and dot matrix type LED lamp 1 are located same level. The ultrasonic altimeter 4 that four rotor unmanned aerial vehicle 2 carried guarantees holistic high stability. Carry wireless data transmission device 5 on four rotor unmanned aerial vehicle 2. The 2 lower parts of four rotor unmanned aerial vehicle carry the canopy target 6, and the light that N font light curtain 7 and 1 production of dot matrix LED lamp that the lens group 8 produced in the canopy target 6 were located the coplanar. Wireless data sending device 5 is with the circuit signal to the computer of 2 high information of four rotor unmanned aerial vehicle, 2 interval information of two four rotor unmanned aerial vehicle and the target projectile body, real-time control dot matrix type LED luminance and outer trajectory parameter measured data behind the computer processing signal.

As shown in fig. 2, the real-time dot-matrix LED brightness can be obtained from the height information of the quad-rotor drone 2. The N-shaped light curtain 7 formed by the backdrop target 6 takes natural light as background in the daytime, and uses LED light 9 as background at night or when the light condition is poor. Due to the action of the N-shaped photodiode, the field of view of the imaging lens is a fan shape with a certain thickness, commonly called as a canopy, see fig. 4. When the projectile passes through the N-shaped light curtain 7, part of light rays entering the lens can be shielded, so that the luminous flux entering the lens group 8 is reduced, and the change of the luminous flux can generate a corresponding projectile passing signal through a photoelectric conversion device and a signal processing circuit. The user can use the computer to gather the information to obtain the parameter measurement of the projectile target-passing trajectory.

The invention provides a measuring method of an enhanced type outer ballistic parameter measuring device in all-day, which comprises the following steps:

(1) Two 2 flights of four rotor unmanned aerial vehicle are in the sky of dot matrix type LED1, behind the 5 switch on power of wireless data transmitting device, and supersound altimeter 4 transmits data to the computer with current height H through wireless data transmitting device 5, and the computer adjusts dot matrix type LED1 luminance according to ultrasonic altimeter 4, and the computational formula is:

wherein L is the brightness of the dot-matrix LED, F is the focal length of the lens, H is the height of the ultrasonic altimeter, F is the number of F-turns,

(2) When the projectile passes through the N-shaped light curtain 7, part of light rays entering the lens can be shielded, so that the luminous flux entering the lens group 8 becomes small, and the change of the luminous flux generates a corresponding projectile passing signal through the computer and is converted into an electric signal through the lens; the electric signal transmits data to the computer through the wireless data transmitting device 5;

(3) The data are summarized by a computer, and the computer calculates the following calculation processes:

the time when the projectile passes through the N-shaped 6 target surfaces is set to be t respectively within the range of the 7 target surfaces of the double N-shaped light curtain ₁ 、t ₂ 、t ₃ 、t ₄ 、t ₅ 、t ₆ S is the distance between two lens groups, light curtain G ₁ And G ₂ Between them is alpha

Wherein the included angle between the projection of the velocity vector on the YOZ plane and the XOZ plane is gamma ₂ ，G ₂ And G ₅ The target distance of the formed speed measuring target is Scos beta.

And the pitching angle theta, the azimuth angle gamma, the speed V, the coordinate quantity X and/or the coordinate quantity y of the projectile can be obtained through calculation.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the specification and the drawings of the present invention should be included in the scope of the present invention.

Claims (7)

1. An all-time enhanced outer ballistic parameter measuring device comprises an infrared ray transceiving device (3), a wireless data transmitting device (5) and a computer, and is characterized by further comprising two unmanned aerial vehicles, wherein canopy targets (6) are mounted at the lower parts of the two unmanned aerial vehicles, and each canopy target (6) comprises a shell and a lens group (8) which is fixedly arranged in the shell and can form an N-shaped light curtain (7); altimeters (4) are installed on the side surfaces of the four-rotor unmanned aerial vehicles (2), and infrared receiving devices (3) and wireless data receiving and transmitting devices (5) are respectively installed on the opposite side surfaces of the two unmanned aerial vehicles; the dot matrix type LED lamp (1) is arranged below the unmanned aerial vehicle, and the LED light (9) emitted by the dot matrix type LED (1) and the backdrop target (6) are arranged on the same plane.

2. The all-day enhanced external ballistic parameter measurement device of claim 1, wherein: the lens group (8) comprises a cylindrical shell, a lens is arranged in the cylindrical shell along the axis, and an N-shaped photodiode is arranged at the end part of the cylindrical shell.

3. The enhanced all-day external ballistic parameter measurement device of claim 1 or 2, characterized in that: the unmanned aerial vehicle is a quad-rotor unmanned aerial vehicle (2); the altimeter (4) is an ultrasonic altimeter.

4. The measurement method of the all-time enhanced external ballistic parameter measurement device according to claim 1, characterized by comprising the steps of:

the two unmanned aerial vehicles fly above the dot matrix type LED (1), after the wireless data transmitting device (5) is powered on, the altimeter (4) transmits the current height H to the computer through the wireless data transmitting device (5), the computer adjusts the brightness of the dot matrix type LED (1) according to the altimeter (4), the luminous flux of a bullet entering the lens group (8) through the N-shaped light curtain (7) is reduced, the change of the luminous flux generates a corresponding bullet passing signal through the computer, and the corresponding bullet passing signal is converted into an electric signal through the lens; the electric signal transmits data to a computer through a wireless data transmitting device (5); the computer collects the data and calculates to obtain the information of the projectile.

5. The method of claim 4, wherein the brightness of the lattice LED is adjusted by the formula

Wherein L is the brightness of the dot-matrix LED, F is the focal length of the lens, H is the height of the ultrasonic altimeter, F is the number of diaphragm, and E is the minimum luminous flux of the lens.

6. The measurement method of the all-day enhanced external ballistic parameter measurement device according to claim 4 or 5, wherein the calculation process is as follows:

in the range of 7 target surfaces of the double N-shaped light curtain, the time for setting the shot to pass through 6 target surfaces of the N shape is t ₁ 、t ₂ 、t ₃ 、t ₄ 、t ₅ 、t ₆ S is the distance between two lens groups, light curtain G ₁ And G ₂ Between them is alpha

Wherein the included angle between the projection of the velocity vector on the YOZ plane and the XOZ plane is gamma ₂ ，G ₂ And G ₅ The target distance of the formed speed measuring target is Scos beta.

7. The method of claim 6, wherein the projectile information includes pitch angle θ, azimuth angle γ, velocity V, coordinate quantity X and/or coordinate quantity y.

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