Auxiliary aiming system of firearm and device thereof

Abstract

The invention is suitable for the technical field of firearm aiming, and provides an auxiliary aiming system and device of a firearm, and the auxiliary aiming system comprises an obtaining module used for obtaining a first wind resistance coefficient K of a bullet shot from the firearm in advance; the trajectory point determining module is arranged in a sighting telescope of the firearm; the calculation module is used for performing calculation according to a preset trajectory point calculation model and the first wind resistance coefficient K to obtain a trajectory point of a bullet to fly out of the gun; the aiming point prompting module is arranged in the sighting telescope; the ballistic point obtained by the ballistic point determining module is displayed in an eyepiece of the sighting telescope; and the user aligns the aiming point in the eyepiece with the ballistic point to aim at the target object. According to the system and the device provided by the invention, the ballistic point is pre-determined for reference of the user, the user is assisted to aim at the target object before shooting, and the shooting accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of firearm aiming, and in particular to an auxiliary aiming system and a device of a firearm. Background Art

[0002] In the prior art, the aiming technique of firearms is usually mainly based on the experience of the user. Therefore, in the process of using firearms, such as hunting rifles or sports airguns, beginners or users with average firearms skills often fail to accurately aim at the target object, so these users usually fail when using the hunting rifle or sports airgun to shoot the target object. This causes them to lose interest in using the hunting rifle or sports airgun, and is also not conducive to improving their shooting ability.

[0003] In order to help users improve their aiming ability when using firearms, it is necessary to help users find the ballistic point when shooting. However, in the prior art, there is no better technology for obtaining the ballistic point of a bullet to be fired from the firearm to help users aim.

[0004] In summary, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0005] In view of the above-mentioned defects, the purpose of the present invention is to provide a firearm auxiliary aiming system and device thereof, so as to predetermine the ballistic point for the user to refer to, thereby assisting the user to aim at the target object before shooting and improving the shooting accuracy.

[0006] In order to achieve the above object, the present invention provides a firearm auxiliary aiming system for assisting a user in aiming at a target object, the auxiliary aiming system comprising:

[0007] An acquisition module, used for pre-acquiring a first drag coefficient K of a bullet fired from the firearm;

[0008] A ballistic point determination module is provided in the sight of the firearm; and is used to calculate according to a preset ballistic point calculation model and the first drag coefficient K to obtain the ballistic point of the bullet to be ejected from the firearm;

[0009] an aiming point prompting module, arranged in the sight; displaying the trajectory point obtained by the trajectory point determination module in the eyepiece of the sight; the user aligning the aiming point in the eyepiece with the trajectory point to aim at the target object;

[0010] In the preset trajectory point calculation model, the trajectory point Δy of the bullet is an unknown number, and the first drag coefficient K and other related parameters are constants.

[0011] According to the auxiliary aiming system, the acquisition module includes:

[0012] The first horizontal distance measurement submodule of the measuring submodule is used to measure the horizontal flight distance L1 of the bullet fired from the firearm;

[0013] A ballistic point measurement submodule, used to measure the ballistic point Δy1 of the bullet fired from the firearm;

[0014] The first operation submodule is used to substitute the horizontal flight distance L1 and the trajectory point Δy1 into the trajectory point operation model for operation to obtain the first drag coefficient K.

[0015] According to the auxiliary aiming system, the auxiliary aiming system further includes:

[0016] A trajectory point operation model construction module, used to construct the trajectory point operation model in advance according to relevant parameters of the trajectory point operation;

[0017] The trajectory point calculation model includes a preset relationship:

[0018]

[0019] in,

[0020] The Δy is the distance the bullet falls in the direction of gravity after flying for t time, also known as the ballistic point;

[0021] The g is the acceleration due to gravity,

[0022] The V 0 is the initial velocity of the bullet,

[0023] K is the first drag coefficient;

[0024] S 0 is the distance from the bullet to the user-calibrated far zero point;

[0025] in,

[0026] The Δy, L and K are unknowns;

[0027] When the first operation submodule performs calculation, the horizontal flight distance L1 and the trajectory point Δy1 are substituted into the relationship (1) to calculate the first drag coefficient K, wherein L1 is L in the relationship (1), and Δy1 is Δy in the relationship (1).

[0028] According to the auxiliary aiming system, the trajectory point determination module includes:

[0029] A storage and update submodule, used for storing the trajectory point calculation model and the first drag coefficient K obtained by the first calculation submodule;

[0030] A second horizontal distance measurement submodule, used to measure the horizontal flight distance L2 of the bullet to be fired from the firearm to reach the target object;

[0031] A second operation submodule is used for substituting the first drag coefficient K and the horizontal flight distance L2 into the trajectory point operation model for operation to obtain the trajectory point Δy2 of the bullet to be ejected from the firearm when the user uses the sight to aim at the target object;

[0032] When the second operation submodule performs calculation, the horizontal flight distance L2 and the first drag coefficient K are substituted into the relational expression (1) to calculate Δy2, wherein L2 is L in the relational expression (1), and Δy2 is Δy in the relational expression (1);

[0033] The first horizontal distance measuring submodule and / or the second horizontal distance measuring submodule and / or the ballistic point measuring submodule of the measuring submodule are rangefinders of the sight.

[0034] According to the auxiliary aiming system, the trajectory point calculation model building module includes:

[0035] The first relational expression constructing submodule is used to establish the relational expression between the speed and time of the bullet at any time during the flight according to the relevant parameters of the bullet during the flight:

[0036]

[0037] in,

[0038] V t is the velocity of the bullet at any time t during its flight;

[0039] V 0 is the initial speed of the bullet;

[0040] K is the first drag coefficient K;

[0041] The second relational formula building submodule is used to establish the horizontal flight distance L and initial speed V of the bullet after any time t according to the relational formula (2). 0 The set of relations includes:

[0042]

[0043] e Lk – 1 = V 0kt (4);

[0044]

[0045] in,

[0046] L is the horizontal distance the bullet flies;

[0047] t is the time the bullet flies;

[0048] The third relational formula building submodule 43 is used to establish the relational formula between the bullet flight time t and the bullet flight horizontal distance L as follows:

[0049] L=V 0 cosα*t;

[0050] Where: α is the angle between the initial velocity of the bullet and the horizontal direction;

[0051] The fourth relational equation building submodule is used to preset the barrel outlet of the firearm that fires the bullet as the coordinate origin, the barrel shoots horizontally, the horizontal direction is the X axis, and the gravity direction is the Y axis; the relational equation for establishing the ballistic point of the bullet in the gravity direction is:

[0052] Δy=V 0 sinα·t–0.5gt 2 (6);

[0053] in,

[0054] Δy is the distance the bullet falls in the direction of gravity after flying for t time;

[0055] V 0 sinα is the velocity component of the initial velocity of the bullet in the direction of gravity;

[0056] g is the acceleration due to gravity;

[0057] The time when the bullet reaches the far zero point is T 0 , the distance from the bullet to the far zero point is S 0 ; When the bullet reaches the far zero point, Δy=0, and the relationship is obtained:

[0058]

[0059] And according to the relationship group (5), the relationship is obtained:

[0060]

[0061] The fifth relational expression constructing submodule is used to construct the relational expression according to and Substituting into the relationship Δy=V 0 sinα·t–0.5gt 2 (6); obtain the relationship:

[0062]

[0063] The ballistic point calculation model is established using the relationship (1).

[0064] According to the auxiliary aiming system, the acquisition module is also used to pre-acquire a plurality of first drag coefficients K of various bullets fired from different firearms;

[0065] The ballistic point determination module is further used to perform calculations according to a preset ballistic point calculation model and the corresponding first drag coefficient K to obtain a ballistic point of a bullet to be ejected from the firearm;

[0066] The firearm includes a hunting gun or a sporting air gun.

[0067] According to the auxiliary aiming system, the auxiliary aiming system further comprises:

[0068] a recalibration module, electrically connected to the acquisition module and the ballistic point determination module respectively; when the firearm and / or bullet compatible with the sight is replaced, or when a preset time and / or a preset number of shots are reached, the recalibration module sends a first control instruction to the acquisition module to control the acquisition module to re-pre-acquire the first drag coefficient K of the bullet fired from the firearm; and / or

[0069] The timing reminder module is used to time the preset time and / or the preset number of shots, and send a reminder message to the recalibration module and / or the user when the preset time and / or the preset number of shots are reached.

[0070] According to the auxiliary aiming system, the auxiliary aiming system also includes: a recalibration start button arranged on the surface of the sight, the recalibration start button is electrically connected to the recalibration module, and pressing the recalibration start button starts or shuts down the recalibration module.

[0071] In order to achieve another object of the present invention, the present invention also provides a sight including any one of the auxiliary sighting systems described above.

[0072] In order to achieve another object of the present invention, the present invention also provides a firearm comprising any one of the auxiliary aiming systems described above.

[0073] In the present invention, the auxiliary aiming system is configured to include: an acquisition module, a ballistic point determination module, and an aiming point prompt module. The acquisition module pre-acquires the first drag coefficient K of the bullet fired from the firearm; the ballistic point determination module set in the sight of the firearm calculates according to a preset ballistic point calculation model and the first drag coefficient K to obtain the ballistic point of the bullet to be fired from the firearm; the ballistic point Δy of the bullet in the preset ballistic point calculation model is an unknown number, and the first drag coefficient K and other related parameters are constants. The aiming point prompt module set in the sight displays the ballistic point obtained by the ballistic point determination module in the eyepiece of the sight; the user aligns the aiming point in the eyepiece with the ballistic point and aims at the target object; thereby, the ballistic point is pre-determined and provided for the user's reference, assisting the user in aiming at the target object before shooting, and improving the shooting accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] Figure 1 It is a block diagram of the auxiliary aiming system of a firearm provided by one embodiment of the present invention;

[0075] Figure 2 It is a block diagram of a firearm auxiliary aiming system provided by another embodiment of the present invention;

[0076] Figure 3 It is a block diagram of a sighting scope provided by one embodiment of the present invention;

[0077] Figure 4 It is a schematic diagram of the initial velocity of a bullet and the horizontal flight distance provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0078] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0079] It should be noted that references to "one embodiment", "embodiment", "example embodiment", etc. in this specification refer to the embodiment described, which may include specific features, structures or characteristics, but not every embodiment must include these specific features, structures or characteristics. In addition, such expressions do not refer to the same embodiment. Furthermore, when describing specific features, structures or characteristics in conjunction with an embodiment, whether or not there is an explicit description, it has been shown that it is within the knowledge of those skilled in the art to combine such features, structures or characteristics into other embodiments.

[0080] In addition, certain words are used in the specification and subsequent claims to refer to specific components or parts. Those with ordinary knowledge in the relevant field should understand that manufacturers can use different nouns or terms to refer to the same component or part. This specification and subsequent claims do not use differences in names as a way to distinguish components or parts, but use differences in the functions of components or parts as the criteria for distinction. "Including" and "including" mentioned throughout the specification and subsequent claims are open-ended terms and should be interpreted as "including but not limited to". In addition, the word "connected" here includes any direct and indirect electrical connection means. Indirect electrical connection means include connection through other devices.

[0081] See also Figure 1 In one embodiment of the present invention, a firearm auxiliary aiming system 100 is provided to assist a user in aiming at a target object. The auxiliary aiming system 100 includes:

[0082] An acquisition module 10, used for pre-acquiring a first drag coefficient K of a bullet fired from the firearm;

[0083] The ballistic point determination module 20 is disposed in the sight 101 of the firearm; and is used to calculate according to a preset ballistic point calculation model and the first drag coefficient K to obtain the ballistic point of the bullet to be ejected from the firearm;

[0084] The aiming point prompting module 30 is arranged in the sight 101; the trajectory point obtained by the trajectory point determining module 20 is displayed in the eyepiece of the sight 101; the user aligns the aiming point in the eyepiece with the trajectory point and aims at the target object;

[0085] In the preset trajectory point calculation model, the trajectory point Δy of the bullet is an unknown number, and the first drag coefficient K and other related parameters are constants.

[0086] In this embodiment, the auxiliary aiming system 100 assists the user to aim at the target object. For the same type of bullet fired from the same firearm, the first drag coefficient K is relatively consistent. Specifically, in the prior art, the calculation of the first drag coefficient k is as follows: assuming Bc is the ballistic coefficient, ρ is the air density, and f is the correction coefficient (unknown), then the calculation formula of k is: Bc describes the parameters of the bullet. The Bc values ​​of different bullets will vary greatly. This difference is corrected by f in formula (9). Therefore, different first drag coefficient K values ​​can describe various bullets fired from the same firearm; or various bullets fired from different firearms. In this embodiment, the first drag coefficient K of the same type of bullet fired from the same firearm is pre-acquired by the acquisition module 10. Therefore, when the user is ready to use the same type of bullet fired from the same firearm to shoot the target object next time, the trajectory point determination module 20 can calculate according to the preset trajectory point calculation model and the first drag coefficient K to obtain the trajectory point of the bullet to be ejected from the firearm. Then, the aiming point prompt module 30 displays the trajectory point obtained by the trajectory point determination module 20 in the eyepiece of the sight 101; thus, the user can see the difference between the trajectory point and the aiming point in the eyepiece, and the user can adjust the position of the firearm to align the aiming point in the eyepiece with the trajectory point, thereby achieving aiming at the target object and helping the user improve the aiming of the firearm. It can enhance the user's interest in gun shooting and also help the user improve his shooting ability. The aiming point can also be called the far zero point.

[0087] See also Figure 2 In one embodiment of the present invention, the acquisition module 10 includes:

[0088] The first horizontal distance measuring submodule 11 is used to measure the horizontal flight distance L1 of the bullet fired from the firearm; 1 It is the horizontal flight distance of the bullet when it reaches the ballistic point, which can be obtained by measuring the horizontal distance between the bullet's exit position and the ballistic point with a rangefinder;

[0089] The ballistic point measurement submodule 12 is used to measure the ballistic point Δy1 of the bullet fired from the firearm; Δy1 is the vertical distance the bullet falls in the direction of gravity when it reaches the ballistic point, which can be obtained by measuring the vertical distance between the exit position of the bullet and the ballistic point in the direction of gravity with a rangefinder;

[0090] When the first drag coefficient K is obtained in advance, it is necessary to measure the horizontal flight distance L1 of the bullet and the trajectory point Δy1 of the bullet after the bullet is fired. The specific measurement can be tested by a rangefinder set on the sight 101. The rangefinder can be a laser rangefinder or an infrared rangefinder.

[0091] The first operation submodule 13 is used to substitute the horizontal flight distance L1 and the trajectory point Δy1 into the trajectory point operation model for operation to obtain the first drag coefficient K. The trajectory point operation model includes a preset relationship:

[0092] Wherein, Δy is the distance that the bullet falls in the direction of gravity after flying for t time, also called the ballistic point; g is the acceleration due to gravity, and V 0 is the initial velocity of the bullet, K is the first drag coefficient; T 0 is the time when the bullet reaches the far zero point, S 0 is the distance from the bullet to the far zero point calibrated by the user; wherein Δy, L and K are unknown numbers;

[0093] When the first operation submodule 13 performs calculation, the horizontal flight distance L1 and the ballistic point Δy1 are substituted into the relational expression (1) to calculate the first drag coefficient K, wherein L1 is L in the relational expression (1), and Δy1 is Δy in the relational expression (1). Of course, the ballistic point calculation model may also include other calculation models.

[0094] In one embodiment of the present invention, the auxiliary aiming system 100 further includes:

[0095] The trajectory point calculation model building module 40 is used to build the trajectory point calculation model according to the relevant parameters of the trajectory point calculation in advance. Specifically, the trajectory point calculation model building module 40 includes:

[0096] The first relational expression constructing submodule 41 is used to establish the relational expression between the velocity and time of the bullet at any time during the flight according to the relevant parameters of the bullet during the flight: in,

[0097] V t is the velocity of the bullet at any time t during its flight;

[0098] V 0 is the initial speed of the bullet;

[0099] K is the first drag coefficient K;

[0100] First, the first relational expression constructing submodule 41 derives the relational expression between the velocity and time of the bullet at any time. 0 is the initial speed of the bullet, S 1 is the second drag coefficient, t is the time at any time, M b is the mass of the bullet, V t is the speed of the bullet at any time t, a is the acceleration of the bullet caused by air resistance, F a is the air resistance to the bullet. Assuming that the air resistance of an ordinary rifle bullet in motion is proportional to the square of the bullet speed, then F a =-S 1 V t 2; a=F a / M b ; Let k = S 1 / M b , the following relationship is obtained:

[0101] a=-kV t 2 ;

[0102] Since acceleration is the derivative of velocity with respect to time,

[0103] Therefore, the following relationship is obtained:

[0104]

[0105] Solve the secondary equation:

[0106]

[0107] The relationship between the speed of the bullet and time at any time is:

[0108] The second relational formula building submodule 42 is used to establish the horizontal flight distance L and the initial speed V of the bullet after any time t according to the relational formula (2). 0 The set of relations includes:

[0109]

[0110] e Lk – 1 = V 0 kt (4);

[0111]

[0112] in,

[0113] L is the horizontal distance the bullet flies;

[0114] t is the time the bullet flies;

[0115] The flight distance L and initial velocity V of the bullet after any time t are derived by the second relational formula construction submodule 42. 0 The specific derivation process of the second relational construction submodule 42 is as follows: Let L be the distance the bullet flies, then: Combined Relationship The derivation is as follows:

[0116]

[0117] Solve the secondary equation:

[0118]

[0119] The following three relationships are obtained:

[0120] Further solving gives:

[0121] Further solving gives: e Lk –1=V 0 kt (4);

[0122] Further solving gives:

[0123] The third relational formula building submodule 43 is used to establish the relational formula between the bullet flight time t and the bullet flight horizontal distance L as L=V 0 Specifically, the third relational expression constructing submodule 43 sets the initial velocity of the bullet V 0 The angle in the horizontal direction is α (unknown quantity), such as Figure 4 As shown, the initial horizontal velocity of the bullet is V 0 cosα, then L=V 0 cosα*t.

[0124] Where: α is the angle between the initial velocity of the bullet and the horizontal direction;

[0125] The fourth relational equation building submodule 44 is used to preset the barrel outlet of the firearm that fires the bullet as the coordinate origin, the barrel shoots horizontally, the horizontal direction is the X axis, and the gravity direction is the Y axis; the relational equation for establishing the ballistic point of the bullet in the gravity direction is: Δy=V 0 sinα·t–0.5gt(6); where Δy is the distance the bullet falls in the direction of gravity after flying for t time; V 0 sinα is the velocity component of the initial velocity of the bullet in the direction of gravity; g is the acceleration of gravity; the time when the bullet reaches the far zero point is T 0 , the distance from the bullet to the far zero point is S 0 ; When the bullet reaches the far zero point, Δy=0, and the relationship is obtained: And according to the relationship group (5), the relationship is obtained:

[0126]

[0127] Specifically, the fourth relational constructing submodule 44 assumes that Δy is the distance that the bullet falls in the direction of gravity after flying for a time period of t; Figure 4 It can be seen that the velocity component of the bullet's initial velocity in the direction of gravity is V 0sinα; g is the acceleration due to gravity. Set the barrel outlet of the firearm of the bullet as the coordinate origin (0,0), shoot horizontally (or nearly horizontally), the horizontal direction is the X axis, and the direction of gravity is the Y axis, then the relationship is: Δy=V 0 sinα·t–0.5gt2(6). Let the time when the bullet reaches the far zero point be T 0 , the distance from the zero point is S 0 ; When the bullet reaches the far zero point, Δy=0, and the relationship is: 0=V 0 sinα·T 0 –0.5 gT 0 2, and concluded that: as well as

[0128] The fifth relational expression constructing submodule 45 is used to perform calculations based on the relational expression groups (3) to (5) and (7) to obtain the relational expression And the relationship and Substituting into the relationship Δy=V 0 sinα·t–0.5gt 2 (6); obtain the relationship: To establish the ballistic point calculation model.

[0129] The fifth relational expression constructing submodule 45 is based on The relationship can be obtained:

[0130]

[0131] Sinα and T 0 Substitute Δy=V 0 sinα·t–0.5gt 2 (6), we get the relationship:

[0132]

[0133] So far, equation (1) is a complete formula for calculating the trajectory point of a bullet in the direction of gravity. In this formula, the drag coefficient k is unknown and the trajectory point position Δy is unknown. 0 As the initial velocity of the bullet, V 0 It is not fixed and there will be errors, but in equation (1), V 0 k appears as a whole, so V 0 This can be corrected by adding a coefficient to k.

[0134] Therefore, as long as k is calculated, the calculation formula of the bullet's trajectory point in the direction of gravity is established. And this relational formula (1) can be adapted to various bullets and guns, and is very practical. However, the calculation of the k value requires obtaining various accurate parameters of the gun and the bullet, which is almost impossible. The auxiliary aiming system 100 of the gun provided by the present application combines theory with practice, implants the relational formula (1) into the hardware system of the auxiliary aiming system 100 of the gun, allows the shooter to shoot once at a distance L, and the shooter can specify it arbitrarily, and then measures the parameter Δy with a measuring instrument, and then inputs the relational formula (1) through multiple functional modules of the auxiliary aiming system 100 together with the above-mentioned other known parameters; the trajectory point determination module 20 can obtain the k value according to the relational formula (1), and substitutes k as a constant into the relational formula (1). At this point, equation (1) holds true, and since this k value is obtained in advance through actual measurement based on the gun used and the type of bullet used, when the user uses the same gun and the same type of bullet to shoot, the auxiliary aiming system 100 can very accurately calculate the ballistic point of the gun and the bullet, thereby assisting the user in aiming and shooting.

[0135] See also Figure 2 In one embodiment of the present invention, the trajectory point determination module 20 includes:

[0136] A storage and updating submodule 21, configured to store the trajectory point calculation model and the first drag coefficient K obtained by the first calculation submodule 13;

[0137] A second horizontal distance measurement submodule 22 is used to measure the horizontal flight distance L2 of the bullet to be fired from the firearm to reach the target object;

[0138] The second operation submodule 23 is used to substitute the first drag coefficient K and the horizontal flight distance L2 into the trajectory point operation model for operation to obtain the trajectory point Δy2 of the bullet to be ejected from the firearm when the user uses the sight 101 to aim at the target object;

[0139] When the second operation submodule 23 performs calculation, the horizontal flight distance L2 and the first drag coefficient K are substituted into the relational expression (1) to calculate Δy2, wherein L2 is L in the relational expression (1), and Δy2 is Δy in the relational expression (1);

[0140] In this embodiment, the storage and update submodule 21 stores the trajectory point calculation model and the first drag coefficient K obtained by the first calculation submodule 13; specifically, before the user shoots, a shooting test is performed using a firearm and a bullet to obtain the first drag coefficient K, and then the user uses the same firearm and the same bullet to shoot, and the second horizontal distance measurement submodule 22 can measure the horizontal flight distance L2 of the bullet to be fired from the firearm to reach the target object; when the user uses the sight 101 to aim at the target object, the second calculation submodule 23 substitutes the first drag coefficient K and the horizontal flight distance L2 into the trajectory point calculation model for calculation to obtain the trajectory point Δy2 of the bullet to be fired from the firearm. Among them, the first horizontal distance measurement submodule 11 and / or the second horizontal distance measurement submodule 22 and / or the trajectory point measurement submodule 12 are the rangefinders of the sight 101.

[0141] In addition, the acquisition module 10 is also used to pre-acquire a plurality of first drag coefficients K of various bullets fired from different firearms; that is, various bullets fired from different firearms are used to shoot in advance to obtain a plurality of first drag coefficients K; the first drag coefficient K value is stored with the corresponding combination of firearms and bullets; in subsequent shooting, the corresponding first drag coefficient K is called out according to the firearm and bullet used by the user. The ballistic point determination module 20 is also used to calculate according to the preset ballistic point calculation model and the corresponding first drag coefficient K to obtain the ballistic point of the bullet to be fired from the firearm; thereby, auxiliary aiming of the user's shooting can be achieved. The firearm includes a hunting gun or a sports air gun, etc.

[0142] See also Figure 2 In one embodiment of the present invention, the auxiliary aiming system 100 further includes:

[0143] The recalibration module 50 is electrically connected to the acquisition module 10 and the ballistic point determination module 20 respectively; when the firearm and / or bullet compatible with the sight 101 is replaced, or when the preset time and / or the preset number of shots are reached, the recalibration module 50 sends a first control instruction to the acquisition module 10 to control the acquisition module 10 to re-pre-acquire the first drag coefficient K of the bullet fired from the firearm; and / or

[0144] The timing reminder module 60 is used to time the preset time and / or the preset number of shots, and send a reminder message to the recalibration module 50 and / or the user when the preset time and / or the preset number of shots are reached.

[0145] In this embodiment, the first drag coefficient K is recalibrated by the recalibration module 50. When the firearm and / or bullet that matches the sight 101 is replaced, the first drag coefficient K may be different, so it is necessary to reshoot to obtain the corresponding first drag coefficient K. And the first drag coefficient K affected by the same firearm will also change due to the long time of use, so a preset time is set, and when the time is reached, reshoot to obtain the corresponding first drag coefficient K. This can accurately help the user aim at the target object when shooting. The timing reminder module 60 is used to time the preset time, and the preset time can be half a year, a year, etc. It can also be re-shooting after reaching a predetermined number of shootings, such as 300 times, 500 times, etc., and each bullet fired is counted as one time to obtain the corresponding first drag coefficient K calibration. In the embodiment of the present application, S1 and S are the second drag coefficients, which and the first drag coefficient K both represent drag coefficients, but K is a multiple relationship with S1 and S.

[0146] In one embodiment of the present invention, the auxiliary aiming system 100 further includes: a recalibration start button provided on the surface of the aiming scope 101, the recalibration start button being electrically connected to the recalibration module 50, and pressing the recalibration start button starts or shuts down the recalibration module 50. The user can manually start or shut down the operation of the recalibration module 50 through the recalibration start button.

[0147] See also Figure 3 In other embodiments of the present invention, a sighting scope 101 including an auxiliary aiming system 100 is also provided. The sighting scope 101 can assist a user in aiming at a target object for shooting. A firearm including the auxiliary aiming system 100 is also provided. Shooting using the firearm including the auxiliary aiming system 100 can obtain the auxiliary aiming of the auxiliary aiming system 100. At this time, when the shooter observes the target object, such as various animals, and shoots using the sighting scope 101 of the firearm including the auxiliary aiming system 100, the auxiliary aiming system 100 can conveniently and quickly calculate the accurate ballistic point, and display the ballistic point for the shooter's reference, so that the shooter can achieve accurate shooting without long-term training. As a result, the accuracy of shooting is no longer highly dependent on the experience and level of the shooter as in the prior art.

[0148] In addition, the technical means of determining the ballistic point of the present application is also superior to the prior art. In the prior art, there are generally two methods for determining the ballistic point of a bullet. The first method is to make a table of ballistic landing points. The variables of the table are: firearm type, bullet type, various wind speed values, various distance values, etc. When using it, the ballistic landing point value is obtained by looking up the table. Making the table requires a lot of manpower and material resources. The entire table making process is very cumbersome and very unrealistic for individual users. In addition, the consistency requirements for firearms and bullets are relatively high. If the parameters of the same type of firearms or bullets are greatly different, the accuracy of the table cannot be guaranteed.

[0149] The second method is the formula derivation method: the ballistic point is calculated according to the theoretical formula. This method is the most commonly used, but it requires the user to input accurate gun parameters and bullet parameters. For ordinary users, they may not understand these professional parameters, so they cannot guarantee the correct input of these parameters. In addition, since the gun parameters or bullet parameters cannot be guaranteed to be completely consistent during the production process, or some parameters of the gun change due to long-term use, these will lead to inaccurate theoretical calculation results. In the present invention, a very accurate ballistic calculation relationship can be obtained by establishing a ballistic point calculation model based on theoretical formula derivation and combining actual ballistic data for coefficient correction. The coefficients of this relationship (1) match the firearm and bullet used by the user, which omits the tedious work of making charts and has a basis for theoretical formula derivation. Therefore, it is more accurate. The auxiliary aiming system 100 can better obtain the ballistic point of the bullet to be fired and assist the shooter in aiming.

[0150] In the embodiment of the present invention, by establishing the falling distance Δy of the bullet in the direction of gravity when it reaches the target point 1 The relationship is: This relational expression can be applied to the calculation of ballistic points of various firearms and various bullets, and is highly practical. 1 It is the distance the bullet falls relative to the exit position of the bullet in the direction of gravity when it reaches the target point; S 0 is the horizontal flight distance of the bullet when it reaches the far zero point. The far zero point is a preset calibration point. When the bullet reaches the far zero point, it intersects with the aiming line in the sight 101. Therefore, when the bullet reaches the far zero point, the trajectory deviation is 0. Since the far zero point is a preset calibration point, S 0 is a known parameter, and when the bullet reaches the far zero point, Δy 1 =0. 1 It is the horizontal flight distance of the bullet when it reaches the target point, which can be obtained by measuring the horizontal distance between the bullet's exit position and the target point with a rangefinder. S is the second drag coefficient, M b is the mass of the bullet. Therefore, if the k value is calculated by the formula, it is necessary to obtain the parameters of the bullet and the drag coefficient. The drag coefficient involves parameters such as air density, and the k value may have errors due to the inconsistency between the various parameters obtained and the actual data, which affects the calculation of the bullet's trajectory. Therefore, in the embodiment of the present invention, a preset model of firearm and a preset model of bullet are used for shooting, and the flight distance L of the preset model of bullet in the horizontal direction when it reaches the target point is measured by a rangefinder. 1 The value is measured by a measuring instrument to measure the falling distance Δy of the bullet of the preset model in the direction of gravity when it reaches the target point. 1 value, according to the L 1 value, the Δy 1 The k value is obtained by using a relationship between the k value and the falling distance of the bullet in the direction of gravity when the bullet reaches the target point; the k value is matched with the preset firearm model and the preset bullet model; the k value is obtained through actual ballistic data without the user knowing various parameters, and the error of the obtained k value is small, and the k value is compatible with the preset firearm model and the preset bullet model, and in the relationship between the falling distance of the bullet in the direction of gravity when the bullet reaches the target point, v 0 k appears as a whole, and the k value obtained through actual testing can also correct v 0 The error between the parameter and the actual data due to reasons such as aging of the gun. After obtaining the k value, when using the preset model of firearms and the preset model of bullets for shooting, the k value corresponding to the preset model of firearms and the preset model of bullets is called, and the relationship between the falling distance of the bullet in the direction of gravity when the bullet reaches the target point substituted into the k value is used as the calculation formula for the falling distance of the preset model of bullets in the direction of gravity when they reach the target point; the flight distance of the preset model of bullets in the horizontal direction when they reach the target point can be obtained according to the rangefinder measurement, and the falling distance of the bullet in the direction of gravity relative to the exit position of the bullet when the preset model of bullets reaches the target point can be obtained by the calculation formula for the falling distance of the preset model of bullets in the direction of gravity when they reach the target point, thereby obtaining the trajectory of the preset model of bullets, and the trajectory can be displayed on the sight 101 for the shooter to refer to, thereby improving the accuracy of shooting.

[0151] It should be noted that the present application can be implemented in software and / or a combination of software and hardware, for example, can be implemented using an application specific integrated circuit (ASIC), a general purpose computer or any other similar hardware device. In one embodiment, the software program of the present application can be executed by a processor to implement the above steps or functions. Similarly, the software program of the present application (including relevant data structures) can be stored in a computer-readable recording medium, for example, a RAM memory, a magnetic or optical drive or a floppy disk and similar devices. In addition, some steps or functions of the present application can be implemented using hardware, for example, as a circuit that cooperates with a processor to perform each step or function.

[0152] In summary, in the present invention, the auxiliary aiming system is configured to include: an acquisition module, a ballistic point determination module, and an aiming point prompt module. The acquisition module pre-acquires the first drag coefficient K of the bullet fired from the firearm; the ballistic point determination module provided in the sight 101 of the firearm calculates according to a preset ballistic point calculation model and the first drag coefficient K to obtain the ballistic point of the bullet to be fired from the firearm; the ballistic point Δy of the bullet in the preset ballistic point calculation model is an unknown number, and the first drag coefficient K and other related parameters are constants. The aiming point prompt module provided in the sight 101 displays the ballistic point obtained by the ballistic point determination module in the eyepiece of the sight 101; the user aligns the aiming point in the eyepiece with the ballistic point and aims at the target object; thereby, the ballistic point is pre-determined and provided for the user's reference, assisting the user in aiming at the target object before shooting, and improving the shooting accuracy.

[0153] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A firearm auxiliary aiming system, used to assist a user in aiming at a target object, characterized in that: The auxiliary aiming system comprises: An acquisition module, used for pre-acquiring a first drag coefficient K of a bullet fired from the firearm; A ballistic point determination module is provided in the sight of the firearm; and is used to calculate according to a preset ballistic point calculation model and the first drag coefficient K to obtain the ballistic point of the bullet to be ejected from the firearm; an aiming point prompting module, arranged in the sight; displaying the trajectory point obtained by the trajectory point determination module in the eyepiece of the sight; the user aligning the aiming point in the eyepiece with the trajectory point to aim at the target object; In the preset trajectory point calculation model, the trajectory point Δy of the bullet is an unknown number, and the first drag coefficient K and other related parameters are constants.

2. The auxiliary aiming system according to claim 1, characterized in that: The acquisition module comprises: A first horizontal distance measurement submodule, used to measure the horizontal flight distance L1 of the bullet fired from the firearm; A ballistic point measurement submodule, used to measure the ballistic point Δy1 of the bullet fired from the firearm; The first operation submodule is used to substitute the horizontal flight distance L1 and the trajectory point Δy1 into the trajectory point operation model for operation to obtain the first drag coefficient K.

3. The auxiliary aiming system according to claim 2, characterized in that: The auxiliary aiming system also includes: A trajectory point operation model construction module, used to construct the trajectory point operation model in advance according to relevant parameters of the trajectory point operation; The trajectory point calculation model includes a preset relationship: Wherein, Δy is the distance that the bullet falls in the direction of gravity after flying for t time, also called the ballistic point; g is the acceleration of gravity, V0 is the initial velocity of the bullet, K is the first drag coefficient; S0 is the distance from the bullet to the far zero point calibrated by the user; Wherein, Δy, L and K are unknown numbers; When the first operation submodule performs calculation, the horizontal flight distance L1 and the trajectory point Δy1 are substituted into the relationship (1) to calculate the first drag coefficient K, wherein L1 is L in the relationship (1), and Δy1 is Δy in the relationship (1).

4. The auxiliary aiming system according to claim 3, characterized in that: The trajectory point determination module comprises: A storage and update submodule, used for storing the trajectory point calculation model and the first drag coefficient K obtained by the first calculation submodule; A second horizontal distance measurement submodule, used to measure the horizontal flight distance L2 of the bullet to be fired from the firearm to reach the target object; A second operation submodule is used for substituting the first drag coefficient K and the horizontal flight distance L2 into the trajectory point operation model for operation to obtain the trajectory point Δy2 of the bullet to be ejected from the firearm when the user uses the sight to aim at the target object; When the second operation submodule performs calculation, the horizontal flight distance L2 and the first drag coefficient K are substituted into the relational expression (1) to calculate Δy2, wherein L2 is L in the relational expression (1), and Δy2 is Δy in the relational expression (1); The first horizontal distance measuring submodule and / or the second horizontal distance measuring submodule and / or the ballistic point measuring submodule is a rangefinder of the sight.

5. The auxiliary aiming system according to claim 3, characterized in that: The ballistic point calculation model building module includes: The first relational expression constructing submodule is used to establish the relational expression between the speed and time of the bullet at any time during the flight according to the relevant parameters of the bullet during the flight: in, V t is the velocity of the bullet at any time t during its flight; V0 is the initial speed of the bullet; K is the first drag coefficient K; The second relational formula building submodule is used to establish, according to the relational formula (2), a relational formula group of the horizontal flight distance L and the initial speed V0 of the bullet after flying for an arbitrary time t, including: of Lk – 1 = V0kt (4); in, L is the horizontal distance the bullet flies; t is the time the bullet flies; The third relational formula building submodule 43 is used to establish the relational formula between the bullet flight time t and the bullet flight horizontal distance L as follows: L = V0cosα*t; Where: α is the angle between the initial velocity of the bullet and the horizontal direction; The fourth relational equation building submodule is used to preset the barrel outlet of the firearm that fires the bullet as the coordinate origin, the barrel shoots horizontally, the horizontal direction is the X axis, and the gravity direction is the Y axis; the relational equation for establishing the ballistic point of the bullet in the gravity direction is: Δy=V0 sinα·t–0.5gt 2 (6); in, Δy is the distance the bullet falls in the direction of gravity after flying for t time; V0 sinα is the velocity component of the initial velocity of the bullet in the direction of gravity; g is the acceleration due to gravity; The time when the bullet reaches the far zero point is T0, and the distance the bullet reaches the far zero point is S0; When the bullet reaches the far zero point, Δy=0, and the relationship is obtained: And according to the relationship group (5), the relationship is obtained: The fifth relational expression constructing submodule is used to construct the relational expression according to and Substituting into the relationship Δy=V0sinα·t–0.5gt2□(6), we obtain the relationship: The ballistic point calculation model is established using the relationship (1).

6. The auxiliary aiming system according to claim 1, characterized in that: The acquisition module is also used to pre-acquire a plurality of first drag coefficients K of various bullets fired from different firearms; The ballistic point determination module is further used to perform calculations according to a preset ballistic point calculation model and the corresponding first drag coefficient K to obtain a ballistic point of a bullet to be ejected from the firearm; The firearm includes a hunting gun or a sporting air gun.

7. The auxiliary aiming system according to claim 1, characterized in that: The auxiliary aiming system also includes: a recalibration module, electrically connected to the acquisition module and the ballistic point determination module respectively; when the firearm and / or bullet compatible with the sight is replaced, or when a preset time and / or a preset number of shots are reached, the recalibration module sends a first control instruction to the acquisition module to control the acquisition module to re-pre-acquire the first drag coefficient K of the bullet fired from the firearm; and / or The timing reminder module is used to time the preset time and / or the preset number of shots, and send a reminder message to the recalibration module and / or the user when the preset time and / or the preset number of shots are reached.

8. The auxiliary aiming system according to claim 7, characterized in that: The auxiliary aiming system further comprises: a recalibration start button arranged on the surface of the sight, the recalibration start button is electrically connected to the recalibration module, and pressing the recalibration start button starts or closes the recalibration module.

9. A sight comprising the auxiliary sighting system according to any one of claims 1 to 8.

10. A firearm comprising the auxiliary aiming system according to any one of claims 1 to 8.

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