CN110470183B - Three-dimensional target part detection method and detection device based on time difference calculation - Google Patents
Three-dimensional target part detection method and detection device based on time difference calculation Download PDFInfo
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- CN110470183B CN110470183B CN201910663073.1A CN201910663073A CN110470183B CN 110470183 B CN110470183 B CN 110470183B CN 201910663073 A CN201910663073 A CN 201910663073A CN 110470183 B CN110470183 B CN 110470183B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A33/00—Adaptations for training; Gun simulators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41J—TARGETS; TARGET RANGES; BULLET CATCHERS
- F41J5/00—Target indicating systems; Target-hit or score detecting systems
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Abstract
The invention discloses a time difference calculation-based three-dimensional target part detection method and a detection device thereof, relates to a method and detection equipment applied to target practice target scoring, can be applied to an automatic target scoring system of a human-shaped target hitting part, and belongs to the field of live-fire practice shooting training equipment. The detection device of the three-dimensional target position based on time difference calculation is provided with a hollow target which can be punctured by bullets, wherein a shock wave sensor is arranged in the center of the lower part of the target and is connected with a data processing device through a data line; the data processing device is also connected with the signal acquisition device on the surface of the target through a data line; the shock wave sensor can detect sound signals which are transmitted through air when a bullet passes through a target cavity after the bullet breaks through the target; the signal acquisition device on the surface of the target can acquire signals generated when the bullet touches the target; the transmission speed of the sound signal is less than the speed of the signal collected by the signal collecting device. The data processing device is a computer.
Description
Technical Field
The invention discloses a time difference calculation-based three-dimensional target part detection method and a detection device thereof, relates to a method and detection equipment applied to target practice target scoring, can be applied to an automatic target scoring system of a human-shaped target hitting part, and belongs to the field of live-fire practice shooting training equipment.
Background
The three-dimensional humanoid target with the hit part automatic detection function can truly simulate the true human body target, so that the reality and the effectiveness of design training are improved, and the three-dimensional humanoid target becomes a research hotspot in the field of training equipment.
Generally, automatic precision target scoring can only realize positioning detection of touching one reference plane, and positioning detection of a three-dimensional target is always a research difficulty and a hotspot. The existing technology capable of realizing automatic target scoring of the three-dimensional target is combined with various technical means such as sound, light, electricity and the like, and has the disadvantages of complex structure, higher cost and difficult use and maintenance.
It is therefore necessary to provide a new solution to meet the actual targeting needs.
Disclosure of Invention
The invention provides a principle based on different transmission speeds of signals in different media, which utilizes the speed difference to detect the height of a bullet hitting a target so as to calculate the specific part of the bullet hitting the target.
By utilizing the technical scheme provided by the invention, a complex structural design does not need to be considered, the manufacturing and maintenance cost is reduced, the user experience satisfaction degree is improved, and the engineering application value is good.
The detection device of the three-dimensional target position based on time difference calculation is provided with a hollow target which can be punctured by bullets, wherein a shock wave sensor is arranged in the center of the lower part of the target and is connected with a data processing device through a data line; the data processing device is also connected with the signal acquisition device on the surface of the target through a data line; the shock wave sensor can detect sound signals which are transmitted through air when a bullet passes through a target cavity after the bullet breaks through the target; the signal acquisition device on the surface of the target can acquire signals generated when the bullet touches the target; the transmission speed of the sound signal is less than the speed of the signal collected by the signal collecting device.
The data processing device is a computer.
The target is a three-dimensional humanoid target.
The signal acquisition device comprises two signal acquisition devices, wherein one signal acquisition device is that a conductive layer covers the surface or the inner wall of a target, the target is made of an insulating material, the conductive layer is connected with an electrostatic detection circuit, and a timer is arranged on the electrostatic detection circuit or in a data processing device; the static electricity detection circuit is used for capturing static electricity generated by friction between the bullet and air during high-speed flight, when the bullet hits a target, positive charges stored by the bullet are released onto the conductive layer, are detected by the static electricity detection circuit, and are timed by the timer.
The insulating material is plastic, hard board and foaming material, preferably foaming material.
The method for detecting the three-dimensional target part based on the time difference calculation comprises the following steps: the son is ejected out of the chamber to fly at a high speed, and positive charges are accumulated by friction with air in flight; the bullet hits the conductive layer on the surface of the target and releases positive charges, the static detection circuit detects a static signal and synchronously starts a timer; the bullet penetrates the target, flies in the cavity of the target, the sound signal collected by the shock wave sensor positioned at the bottom of the target is transmitted to the data processing device, namely after the bullet penetrates the humanoid three-dimensional target, the shock wave sensor receives the signal and stops timing to be recorded as T1, at the moment, T1 is time difference, the hit height position H1= C1T 1 at the moment can be calculated through T1 and the propagation speed C1 of sound speed in the air, the position of the corresponding human body is deduced according to the height of the bullet hitting the target, and therefore the hit position (head, chest and abdomen) of the humanoid three-dimensional target is reported.
The other signal acquisition device is as follows: the surface or the inner wall of the lower part of the target is provided with a vibration sensor which can collect vibration signals generated when the bullet breaks through the target, and a timer is arranged on the vibration sensor or in the data processing device; the vibration sensor collects vibration signals when the bullet hits the target, and triggers the timer to time.
The target is made of a hard material with good vibration conduction performance; the hard material is plastic, metal or ceramic.
The bottom of the shock wave sensor is also provided with a supporting structure connected with the target, and the supporting structure is made of vibration isolation materials and prevents crosstalk of vibration signals conducted by the target.
The vibration isolation material is a foaming material or a rubber pad.
The method for detecting by using the signal acquisition device comprises the following steps:
the bullet hits the target, the vibration sensor detects a vibration signal, and a timer is synchronously started, wherein the timing time is T1; the bullet penetrates the target, flies in the cavity of the target, the sound signal collected by the shock wave sensor positioned at the bottom of the target is transmitted to the data processing device, namely after the bullet penetrates the humanoid three-dimensional target, the shock wave sensor receives the signal and stops timing and recording as T2, if the speed of vibration transmitted in the medium is knownAnd the propagation speeds of the shock wave in the air are v1 and v2 respectively, and the hit height position at the moment can be calculated by setting delta T = T1-T2
And deducing the corresponding human body part according to the height of the target hit by the bullet, thereby reporting the hit part (head, chest and abdomen) of the human-shaped three-dimensional target.
Further, the static or vibration signal acquisition device is divided into two independent parts which are respectively used for the front half part and the rear half part of the human-shaped three-dimensional target; the static or vibration sensor or the data processing device is also respectively provided with a corresponding timer;
when the bullet hits the three-dimensional humanoid target from the front direction, the vibration sensor corresponding to the front side acquires a signal and obtains a timing time T1, and when the bullet passes through the cavity and hits the back side of the three-dimensional humanoid target, the vibration sensor corresponding to the back side acquires a signal and obtains a timing time T2, which satisfies T1<T2; when the bullet hits the three-dimensional humanoid target from the direction of the back, the vibration sensor corresponding to the back acquires a signal and obtains a timing time T2, when the bullet passes through the cavity and hits the front of the three-dimensional humanoid target, the vibration sensor corresponding to the front acquires a signal and obtains a timing time T1, and the timing time T1 is satisfied when the bullet meets the requirements of T1>T2; therefore, the general direction (front/back) of the bullet can be judged by judging the sequence of the T1 and the T2; taking Tmin = min (T1, T2) and setting the time when the shock wave signal generated by the bullet in the cavity reaches the shock wave sensor to be T3, H1= C1 Tmin or
(where v1, v2 are the speed of vibration transmitted in a medium and the speed of shock wave propagating in air, respectively,. DELTA.T = Tmin-T3) the height of the bullet hit was calculated, thereby approximately reporting the hit (head, chest, abdomen) of the human-shaped three-dimensional target
The invention has the beneficial effects that: the hit part positioning method is simple to realize, high in reliability and precision, low in manufacturing and maintenance cost and capable of meeting the actual training requirements, and is provided in the field of automatic target scoring of human-shaped three-dimensional targets.
Drawings
Fig. 1 is a schematic cross-sectional structural view of a device for detecting a three-dimensional target site based on time difference calculation according to the present invention (example 1).
Fig. 2 is a schematic sectional view of the apparatus for detecting a three-dimensional target site according to the present invention based on time difference calculation (example 3).
Fig. 3 is a schematic perspective view of the detection apparatus for a three-dimensional target site according to the present invention based on time difference calculation (example 2 or example 3).
Detailed Description
The invention is described in further detail below with reference to the accompanying figures 1-3:
the detection device of the three-dimensional target part based on time difference calculation is provided with a hollow target 1 which can be punctured by bullets, wherein a shock wave sensor 2 is arranged at the center of the lower part of the target 1, and the shock wave sensor 2 is connected with a data processing device through a data line; the data processing device is also connected with a signal acquisition device on the surface of the target 1 through a data line; the shock wave sensor 2 can detect sound signals which are transmitted through air when a bullet passes through the cavity of the target 1 after the bullet breaks through the target 1; the signal acquisition device on the surface of the target 1 can acquire signals generated when a bullet touches the target; the transmission speed of the sound signal is less than the speed of the signal collected by the signal collecting device.
The data processing device is a computer.
The target 1 is a three-dimensional humanoid target.
Example 1
Referring to the attached figure 1, a conducting layer 3 covers the surface or the inner wall of a target 1, the target 1 is made of an insulating material, the conducting layer 3 is connected with an electrostatic detection circuit, and a timer is further arranged on the electrostatic detection circuit or in a data processing device; the static electricity detection circuit is used for capturing static electricity generated by friction between the bullet and air during high-speed flight, when the bullet hits the target 1, positive charges stored by the bullet are released onto the conductive layer 3, are detected by the static electricity detection circuit, and are timed by a timer.
The insulating material is plastic, hard board and foaming material, preferably foaming material.
The method for detecting the three-dimensional target part based on the time difference calculation comprises the following steps: the son is ejected out of the chamber to fly at a high speed, and positive charges are accumulated by friction with air in flight; the bullet hits the conducting layer on the surface of the target 1 and releases positive charges, the static detection circuit detects a static signal and synchronously starts a timer; the bullet penetrates the target 1, flies in the cavity of the target 1, the sound signal collected by the shock wave sensor 2 positioned at the bottom of the target 1 is transmitted to the data processing device, namely after the bullet penetrates the human-shaped three-dimensional target, the shock wave sensor 2 receives the signal and stops timing and recording as T1, at the moment, T1 is time difference, the hit height position H1= C1T 1 at the moment can be calculated through T1 and the propagation speed C1 of sound speed in the air, and the corresponding human body position is deduced according to the height of the bullet hitting the target 1, so that the hit position (head, chest and abdomen) of the human-shaped three-dimensional target is reported.
Example 2
Referring to fig. 2-3, a vibration sensor 4 is disposed on the surface or inner wall of the lower portion of the target 1, and is capable of collecting vibration signals generated when the bullet breaks through the target 1, and a timer is further disposed on the vibration sensor 4 or in the data processing device; the vibration sensor 4 collects a vibration signal when the bullet penetrates the target 1, and when the bullet hits the target 1, the vibration sensor 4 detects the vibration signal and counts time by a timer.
The target 1 is made of a hard material with good vibration conduction performance; the hard material is plastic, metal or ceramic.
The bottom of the shock wave sensor 2 is also provided with a supporting structure 5 connected with the target 1, and the supporting structure 5 is made of a vibration isolation material and is used for preventing crosstalk of vibration signals conducted by the target 1.
The vibration isolation material is a foaming material or a rubber pad.
The method for detecting by using the signal acquisition device comprises the following steps:
the bullet hits the target 1, the vibration sensor 4 detects the vibration signal and starts synchronouslyA movable timer with the timing time of T1; the bullet penetrates the target 1, flies in the cavity of the target 1, the sound signal collected by the shock wave sensor 2 positioned at the bottom of the target 1 is transmitted to the data processing device, namely after the bullet penetrates the humanoid three-dimensional target, the shock wave sensor 2 stops recording as T2 when receiving the signal, if the speed of vibration transmitted in a medium and the speed of shock wave transmitted in the air are respectively v1 and v2, and if delta T = T1-T2 are set, the hit height position can be calculated at the moment
And deducing the corresponding human body part according to the height of the bullet hitting the target 1, thereby reporting the hit part (head, chest and abdomen) of the human-shaped three-dimensional target.
Example 3
Referring to fig. 2-3, the signal acquisition device is provided with vibration sensors 4 on the surface or inner wall of the lower part of the target 1, i.e. the front and back sides are respectively provided with one vibration sensor 4; the vibration sensor 4 or the data processing device is also respectively provided with a corresponding timer;
when the bullet hits the three-dimensional humanoid target from the front direction, the vibration sensor corresponding to the front side acquires a signal and obtains a timing time T1, and when the bullet passes through the cavity and hits the back side of the three-dimensional humanoid target, the vibration sensor corresponding to the back side acquires a signal and obtains a timing time T2, which satisfies T1<T2; when the bullet hits the three-dimensional humanoid target from the direction of the back, the vibration sensor corresponding to the back acquires a signal and obtains a timing time T2, when the bullet passes through the cavity and hits the front of the three-dimensional humanoid target, the vibration sensor corresponding to the front acquires a signal and obtains a timing time T1, and the timing time T1 is satisfied when the bullet meets the requirements of T1>T2; therefore, the general direction (front/back) of the bullet can be judged by judging the sequence of the T1 and the T2; taking Tmin = min (T1, T2), and setting the moment of arrival of a shock signal generated by a bullet in the cavity as T3
(wherein v1 and v2 are vibration, respectively)The speed of motion transmitted in the medium and the speed of shock wave propagation in the air, Δ T = Tmin-T3) calculates the height of the bullet hit, thereby approximately reporting the hit (head, chest, abdomen) of the human-shaped solid target.
The invention has the beneficial effects that: the hit part positioning device which is simple to realize, high in reliability, high in precision and low in manufacturing and maintenance cost and can meet the actual training requirement is provided in the field of automatic target scoring of the human-shaped three-dimensional target, the position of the hit target can be rapidly and accurately calculated by the technical scheme recorded in the invention, the positioning precision in the vertical direction can be controlled within 30mm, and particularly the precision of the scheme recorded in the embodiment 1 can be controlled within 10 mm; in the embodiment 3, the hit position in the vertical direction can be positioned, and whether the gunner hits the target on the front side or the back side can be displayed, so that the method has good practical significance.
Claims (3)
1. A detection device of a three-dimensional target part based on time difference calculation is provided with a hollow target which can be punctured by a bullet, and is characterized in that: the shock wave sensor is arranged in the center of the lower part of the target and is connected with the data processing device through a data line; the data processing device is also connected with the signal acquisition device through a data line; the shock wave sensor can detect sound signals which are transmitted through air when a bullet passes through a target cavity after the bullet breaks through the target; the signal acquisition device on the surface of the target can acquire signals generated when the bullet touches the target; the transmission speed of the sound signal is lower than the speed of the signal collected by the signal collecting device;
the data processing device is a computer;
the target is a three-dimensional humanoid target;
the signal acquisition device is as follows: the surface or the inner wall of the two sides of the lower part of the target is provided with a vibration sensor, namely the front surface and the back surface are respectively provided with a vibration sensor; the device can collect vibration signals generated when the bullet breaks down the target, and a timer is arranged on the vibration sensor or in the data processing device; the method comprises the following steps that a vibration sensor collects vibration signals when a bullet penetrates through a target, detects the vibration signals when the bullet hits the target, and times are conducted through a timer;
the method for detecting the three-dimensional target part by the detection device of the three-dimensional target part based on the time difference calculation comprises the following steps:
when the bullet hits the three-dimensional humanoid target from the front direction, the vibration sensor corresponding to the front side acquires a signal and obtains a timing time T1, and when the bullet passes through the cavity and hits the back side of the three-dimensional humanoid target, the vibration sensor corresponding to the back side acquires a signal and obtains a timing time T2, which satisfies T1<T2; when the bullet hits the three-dimensional humanoid target from the direction of the back surface, the vibration sensor corresponding to the back surface acquires a signal and obtains a timing time T2, when the bullet passes through the cavity and hits the front surface of the three-dimensional humanoid target, the vibration sensor corresponding to the front surface acquires a signal and obtains a timing time T1, and the timing time T1 is satisfied when the bullet meets the requirements of T1>T2; therefore, the general direction of the bullet can be judged by judging the sequence of T1 and T2; taking Tmin = min (T1, T2), and setting the moment of arrival of a shock signal generated by a bullet in the cavity as T3
Wherein v is1、v2Calculating the height of a bullet hitting part by respectively calculating the speed of vibration transmitted in a medium and the speed of shock wave propagating in the air, wherein the Δ T = Tmin-T3, and thus reporting the hitting part of the humanoid three-dimensional target.
2. The device for detecting the three-dimensional target region based on the moveout calculation according to claim 1, wherein: the target is made of a hard material with good vibration conduction performance; the hard material is plastic, metal or ceramic.
3. The device for detecting the three-dimensional target region based on the moveout calculation according to claim 1, wherein: the bottom of the shock wave sensor is also provided with a supporting structure connected with the target, and the supporting structure is made of vibration isolation materials and is used for preventing crosstalk of vibration signals transmitted by the target;
the vibration isolation material is a foaming material or a rubber pad.
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| CN85107388A (en) * | 1985-09-30 | 1987-04-15 | 中国科学院声学研究所 | The acoustic method of bullet trajectory |
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| KR20030011958A (en) * | 2003-01-13 | 2003-02-11 | 권대식 | Device for finding and indicating the hit point of target |
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| CN205175231U (en) * | 2015-08-12 | 2016-04-20 | 董高庆 | Automatic target device that reports of light arms shooting |
| CN206192189U (en) * | 2016-11-11 | 2017-05-24 | 甘肃神枪声像科技工程有限公司 | Closely target device is reported automatically to acoustic -electric location |
| CN206670463U (en) * | 2017-03-15 | 2017-11-24 | 北京军石科技有限公司 | Three-dimensional intelligent target |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP2040025A1 (en) * | 2007-09-21 | 2009-03-25 | Saab Ab | Shooting target system for automatic determination of point of impact |
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- 2019-07-22 CN CN201910663073.1A patent/CN110470183B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85107388A (en) * | 1985-09-30 | 1987-04-15 | 中国科学院声学研究所 | The acoustic method of bullet trajectory |
| CN1074753A (en) * | 1992-01-14 | 1993-07-28 | 抚顺市发明学会技术服务部 | Ball firing automatic target checking, hit telling system |
| KR20030011958A (en) * | 2003-01-13 | 2003-02-11 | 권대식 | Device for finding and indicating the hit point of target |
| CN101839677A (en) * | 2010-04-08 | 2010-09-22 | 西安工业大学 | Acousto-optic automatic target reporting system |
| CN205175231U (en) * | 2015-08-12 | 2016-04-20 | 董高庆 | Automatic target device that reports of light arms shooting |
| CN206192189U (en) * | 2016-11-11 | 2017-05-24 | 甘肃神枪声像科技工程有限公司 | Closely target device is reported automatically to acoustic -electric location |
| CN206670463U (en) * | 2017-03-15 | 2017-11-24 | 北京军石科技有限公司 | Three-dimensional intelligent target |
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