CN113567702A - Magneto-optical speed measuring system for measuring bullet speed and magneto-optical speed measuring method thereof - Google Patents
Magneto-optical speed measuring system for measuring bullet speed and magneto-optical speed measuring method thereof Download PDFInfo
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- CN113567702A CN113567702A CN202110976074.9A CN202110976074A CN113567702A CN 113567702 A CN113567702 A CN 113567702A CN 202110976074 A CN202110976074 A CN 202110976074A CN 113567702 A CN113567702 A CN 113567702A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/50—Devices characterised by the use of electric or magnetic means for measuring linear speed
- G01P3/54—Devices characterised by the use of electric or magnetic means for measuring linear speed by measuring frequency of generated current or voltage
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P1/00—Details of instruments
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/36—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
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Abstract
The invention discloses a magneto-optical speed measuring system for measuring bullet speed, which comprises a bullet tube, a host and an oscilloscope, wherein the host is respectively connected with the bullet tube and the oscilloscope, a detector is arranged in the bullet tube and comprises at least one group of two sets of electromagnetic mechanisms and at least one group of two sets of photoelectric mechanisms, the electromagnetic mechanisms are nested in the side wall of the bullet tube, the photoelectric mechanisms are vertically arranged in the bullet tube, and the host starts the photoelectric mechanisms and acquires signals of the photoelectric mechanisms and the electromagnetic mechanisms. The invention also discloses a magneto-optical speed measurement method for measuring the bullet speed. The magneto-optical speed measuring system for bullet speed measurement and the magneto-optical speed measuring method thereof adopt the combination of the magnetic speed measuring method and the laser shielding speed measuring method, avoid the requirement of single speed measuring equipment on the material of a flying object, accurately obtain the flying speed of any bullet, simultaneously obtain the flying speeds of magnetic measurement and optical measurement for metal bullets, and greatly improve the precision of an impact experiment.
Description
Technical Field
The invention belongs to the technical field of bullet speed measuring equipment, and particularly relates to a magneto-optical speed measuring system for bullet speed measurement and a magneto-optical speed measuring method thereof.
Background
The method for measuring the bullet speed of the light gas gun mainly comprises the following steps: magnetic velocimetry, laser doppler velocimetry, and shielded laser beam (light curtain) velocimetry. The speed of the high-speed flying projectile is hundreds of meters or even kilometers per second, and a speed measuring instrument needs to have higher sensitivity, extremely short response time and certain anti-interference capability.
The magnetic speed measuring method utilizes the Faraday electromagnetic induction principle, and the speed measuring device has the advantages of simple structure and good economical efficiency, and has the defects that the speed measuring device can only be used for measuring the speed of a metal object and can not be used for measuring the speed of a nonmetal object, so the use is limited. The laser Doppler velocity measurement method measures velocity according to the Doppler effect, and the velocity measurement equipment is generally expensive in price, high in velocity measurement cost, complex in structure, high in requirement on the surface of a velocity measurement object and inconvenient to operate. A method for measuring speed by shielding laser beam (light curtain) features that the flying bullet passes through the laser beam (light curtain) to cause the photoelectric current of photoelectric diode to disappear, and the high-power laser is used to divide a laser beam into multiple laser beams by a series of optical prisms, which are incident on photoelectric receivers.
At present, a single speed measuring mode is adopted in the field of speed measurement of the projectile velocity of the light gas gun, namely one of the 3 speed measuring methods, and the single projectile velocity measuring mode has a plurality of defects: the impact collision experiment usually has unexpected conditions or errors of manual operation, the single bullet speed measurement mode is unreliable, and the experiment has the risk of experiment failure because the bullet speed is not captured; the accuracy of the bullet speed measurement and the experimental error are difficult to measure by using a single bullet speed measurement mode; in the process of measuring the bullet speed, an electric pulse signal is usually needed to trigger other testing equipment, and a reliable and stable trigger electric signal is difficult to be provided by a single speed measurement mode. In view of this, it is important for those skilled in the art how to improve the accuracy and reliability of the measurement of the projectile flight speed in the prior art, and if an accurate and stable trigger electrical signal is obtained, that is, how to solve the problem is urgent.
Disclosure of Invention
The invention aims to provide a magneto-optical speed measuring system and a magneto-optical speed measuring method thereof, which can stably obtain a trigger signal, accurately measure the flight speed of a projectile and have high reliability.
The technical scheme for solving the technical problems comprises the following steps:
the utility model provides a magneto-optical velocity measurement system for bullet speed is measured, includes a bomb section of thick bamboo, host computer and oscilloscope, the host computer respectively with a bomb section of thick bamboo oscilloscope connects, be equipped with the detector in the bomb section of thick bamboo, the detector includes at least a set of two sets of electromagnetic mechanism and at least a set of two sets of photoelectric mechanism, electromagnetic mechanism nestification is in the lateral wall of bomb section of thick bamboo, photoelectric mechanism install perpendicularly in the bomb section of thick bamboo, the host computer is opened photoelectric mechanism obtains photoelectric mechanism with the signal of electromagnetic mechanism, electromagnetic mechanism with photoelectric mechanism sets up at a distance, distance between two sets of electromagnetic mechanism with distance between two sets of photoelectric mechanism equals.
Specifically, the photoelectric mechanism comprises a laser module and a probe module, and the laser module and the probe module are fixed on two opposite sides of the side wall of the barrel.
Specifically, the barrel comprises a head section, a tail section and a protective plate, wherein a connector used for being connected to a light gas gun launching tube is arranged on the head section, two sets of electromagnetic mechanisms are respectively arranged at the tail end of the head section and the tail end of the tail section, and the head section, the tail section and the protective plate are respectively provided with a threaded hole and are connected into a whole through bolts.
Preferably, the head section and the tail section are both provided with mounting holes for mounting the photoelectric mechanism, and the mounting holes penetrate through the side wall of the cartridge.
Specifically, the laser module includes focus adjustable laser instrument and sleeve, but focus adjustable laser instrument nestification is in the sleeve, the probe module includes reducing sleeve pipe, induction diode and focusing lens are fixed reducing sleeve pipe's inside, the sleeve with reducing sleeve pipe is fixed respectively on the mounting hole of the lateral wall both sides of bullet section of thick bamboo.
Specifically, the focusing lens and the induction diode adjust the relative distance through the reducing sleeve.
Specifically, the electromagnetic mechanism comprises a magnetic ring and cover plates covering two sides of the magnetic ring, the cover plates are metal circular rings with the same inner diameter as the cartridge, an enameled wire is wound on the magnetic ring, and the enameled wire is connected with the host through an SMA connecting seat.
Preferably, the cover plate is made of silicon steel.
Another technical solution for solving the above technical problems of the present invention is:
a magneto-optical speed measurement method for measuring the bullet speed is applied to the magneto-optical speed measurement system for measuring the bullet speed, and comprises the following steps:
installing, namely installing a magneto-optical speed measurement system in the light gas gun transmitting tube for connection and supplying power to a host and an oscilloscope;
launching the shot, namely launching the shot when the installation is finished and the normal operation of the equipment is confirmed;
acquiring electromagnetic signal data, and respectively acquiring time nodes of two sets of electromagnetic mechanisms when the projectile passes through a magnetic field by a host;
acquiring photoelectric signal data, and respectively acquiring time nodes of two sets of photoelectric mechanisms when the shot shields a laser beam by a host;
and calculating the flight speed of the projectile, combining electromagnetic signal data or photoelectric signal data with the distance between two sets of electromagnetic mechanisms or the distance between two sets of photoelectric mechanisms, respectively calculating magnetic measurement speed and optical measurement speed, wherein the magnetic measurement speed and the optical measurement speed are both the flight speed of the projectile within an error allowable range, and if the magnetic measurement speed and the optical measurement speed exceed the error allowable range, judging that the speed measurement fails, and measuring the speed again.
Specifically, in the step of acquiring electromagnetic signal data or acquiring photoelectric signal data, the signal data is displayed by the oscilloscope.
The invention has the following beneficial effects: the magnetic velocity measurement method and the laser velocity measurement method are combined, the requirement of single detection equipment on velocity measurement materials is avoided, the flight speed of the shot made of any material can be accurately obtained, the flight speeds of magnetic measurement and optical measurement can be obtained simultaneously for the metal shot, the flight speeds can be corrected mutually, and the experimental precision is greatly improved; the device has the advantages of simple structure, small size, light weight, reliable technical structure, obviously reduced cost, and capability of effectively combining with other equipment to provide stable and reliable trigger signals, and improving the success rate of impact collision experiments.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural view of a barrel in an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of an electromagnetic mechanism according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a laser module according to an embodiment of the invention.
FIG. 5 is a schematic structural diagram of a probe module according to an embodiment of the invention.
The reference numbers in the figures have the following meanings:
the device comprises a bullet barrel 1, a head section 10, a tail section 11, a protective plate 12, a connecting port 13, a threaded hole 14, a hollowed-out part 15, a mounting hole 16, a groove 17, an SMA connecting seat 18, an electromagnetic mechanism 2, a cover plate 21, a magnetic ring 22, an enameled wire 23, a laser module 3, a focusing laser 31, a sleeve 32, a probe module 4, a reducing sleeve 41, an induction diode 42, a focusing lens 43, a main engine 5, a flying object 6 and an oscilloscope 7.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Example (b):
the magneto-optical speed measuring system for measuring the bullet speed is shown in figures 1-5 and comprises a bullet tube 1, a host 5 and an oscilloscope 7, wherein the host 5 is respectively connected with the bullet tube 1 and the oscilloscope 7, a detector is arranged in the bullet tube 1 and comprises at least one set of two sets of electromagnetic mechanisms 2 and at least one set of two sets of photoelectric mechanisms, the electromagnetic mechanisms 2 are nested in the side wall of the bullet tube 1, the photoelectric mechanisms are vertically arranged in the bullet tube 1, the host 5 starts the photoelectric mechanisms and obtains signals of the photoelectric mechanisms and the electromagnetic mechanisms 2, the electromagnetic mechanisms 2 and the photoelectric mechanisms are arranged at intervals, and the distance between the two sets of electromagnetic mechanisms 2 is equal to the distance between the two sets of photoelectric mechanisms. The photoelectric mechanism is provided with a host 5 for supplying working voltage, meanwhile, the electromagnetic mechanism 2 and the photoelectric mechanism are directly and electrically connected with a signal input end of the host 5 and used for transmitting electric signals to the host 5, and a signal output port of the host 5 is connected with an oscilloscope 7 and used for displaying signals on the oscilloscope 7 and recording level changes. The two sets of electromagnetic mechanisms 2 or the two sets of photoelectric mechanisms are distributed in a staggered front-back manner, if the flyer 6 passes through the bullet tube 1, the magnetic induction line can be cut or the laser beam emitted by the photoelectric mechanisms can be shielded, the change of the level is recorded by the oscilloscope 7, the flying speed V1 of the flyer 6 can be calculated according to the distance between the electromagnetic mechanisms 2 and the change time of the level on the oscilloscope 7, the flying speed V2 of the flyer 6 can be calculated according to the distance between the photoelectric mechanisms and the change time of the level on the oscilloscope 7, and the comparison between the V1 and the V2 verifies each other, so that the reliability and the accuracy of speed measurement are improved. For more precise comparison, the distance between the two sets of electromagnetic mechanisms 2 or photoelectric mechanisms is preferably set to be consistent, so that the detected flying speeds are better compared.
Specifically, the photoelectric mechanism comprises a laser module 3 and a probe module 4, and the laser module 3 and the probe module 4 are fixed on two opposite sides of the side wall of the cartridge 1 in an opposite mode. The laser module 3 emits a laser beam which is received by the probe module 4, the laser beam crosses the inside of the bullet tube 1, and the flyer 6 shields the laser beam when flying, so that the probe module 4 does not receive the laser signal and generates level change.
Specifically, the barrel 1 comprises a head section 10, a tail section 11 and a guard plate 12, a connecting port 13 for connecting to a light gas gun launching tube is arranged on the head section 10, two sets of electromagnetic mechanisms 2 are respectively arranged at the tail end of the head section 10 and the tail end of the tail section 11, and the head section 10, the tail section 11 and the guard plate 12 are all provided with threaded holes 14 and are connected into a whole through bolts. The tail end of head segment 10 and the tail end of tail segment 11 all seted up recess 17, and electromagnetic mechanism 2 fixes the inside at recess 17. The position of the groove 17 is provided with an SMA connecting seat 18, which is convenient for the connection of the electromagnetic mechanism 2 and the host 5. The preferred stainless steel that adopts of the material of a section of thick bamboo 1, CNC processing guarantees the machining precision, and tail section 11 sets up to fretwork 15 all around to the gaseous excessive of preshoot of being convenient for improves the life of a section of thick bamboo 1, reduces simultaneously because of the gaseous influence to the collision experiment of preshoot, adopts high strength bolt to make head section 10, tail section 11 and backplate 12 link into an integrated entity, reduces the degree of difficulty of CNC processing, and makes things convenient for the part to change, need not whole change, improves comprehensive life.
Preferably, the head section 10 and the tail section 11 are both provided with mounting holes 16 for installing the photoelectric mechanisms, and the mounting holes 16 penetrate through the side wall of the cartridge 1. The laser module 3 and the probe module 4 are fixed in the mounting hole 16 in a spiral fixing mode.
Specifically, the laser module 3 includes a focus-adjustable laser 31 and a sleeve 32, the focus-adjustable laser is nested in the sleeve 32, the focus-adjustable laser 31 is a low-power focus-adjustable laser, preferably a 5mw, 650nm red light focus-adjustable laser, an outer diameter of the focus-adjustable laser 31 is identical to an inner diameter of the sleeve 32 and can be nested in the sleeve 32, and the focus-adjustable laser is fixed by using an adhesive. Sleeve 32 preferably adopts the brass material, can effectively conduct focusing laser 31 during operation and produce heat, and sleeve 32 external diameter processing has the screw thread, can install on mounting hole 16 through the screw thread.
Specifically, the probe module 4 includes a reducing sleeve 41, an induction diode 42 and a focusing lens 43, the induction diode 42 and the focusing lens 43 are fixed inside the reducing sleeve 41, the sleeve 32 and the reducing sleeve 41 are fixed on the mounting hole 16 and are oppositely arranged on two sides of the side wall of the barrel 1, and the focusing lens 43 and the induction diode 42 pass through the reducing sleeve 41 to adjust the relative distance. The sensing diode 42 is preferably a silicon PIN photodiode with high-speed response, low bias and low dark current characteristics, and is typically a hamaman S5973 silicon PIN photodiode, which is capable of responding to laser beam irradiation more quickly. Reducing sleeve 41 one end internal diameter is unanimous with focusing lens 43 diameter, and the other end is unanimous with sensing diode 42 external diameter, and both establish respectively at reducing sleeve 41's both ends to accept with the one end of installation focusing lens 43 the laser beam that can focus laser instrument 31 sent, and make the laser beam accurately project on sensing diode 42 through focusing sheathed tube focusing, thereby guarantee the precision of surveying, can adjust simultaneously, the corresponding demand when making things convenient for the in-service use. The focusing lens 43 is preferably made of K-9 glass, and when the focusing lens is normally used, the focal length of the adjustable focusing laser 31 is adjusted, so that laser spots irradiate on the focusing lens 43, and the laser spots are completely received by the sensing diode 42 through adjustment of the focusing sleeve. The reducer casing 41 has a limited outer diameter provided with a thread, and can be mounted on the mounting hole 16 through the thread.
Specifically, the electromagnetic mechanism 2 includes a magnetic ring 22 and cover plates 21 covering both sides of the magnetic ring 22, the cover plates 21 are metal rings having the same inner diameter as the bomb barrel 1, an enamel wire 23 is wound on the magnetic ring 22, and the enamel wire 23 is electrically connected with the main machine 5. Preferably, the cover plate 21 is made of silicon steel. The inner diameter of the cover plate 21 is consistent with that of the cartridge 1, and the outer diameter of the cover plate 21 is the same as that of the groove 17, so that the cover plate can be completely nested in the groove 17. The magnetic ring 22 is made of neodymium iron boron magnetic material, preferably N52, and is magnetized along the axial direction, the enameled wire 23 is tightly wound on the outer side of the magnetic ring 22 along one direction, meanwhile, the magnetic induction wire of the whole coil is enabled to be along the same direction, and the enameled wire 23 is connected to the SMA connecting seat 18 and is electrically connected with the host 5 through the SMA connecting seat 18. During manufacturing, the cover plate 21, the magnetic ring 22 and the enameled wire 23 are manufactured into a whole, and then the whole is installed in the groove 17, and finally the enameled wire 23 is connected to the SMA connecting seat 18.
The host 5 comprises a power supply circuit and a signal processing circuit, the power supply circuit provides working voltage for the laser module 3, the probe module 4 and the signal processing circuit, the signal processing circuit adopts a high-speed and high-bandwidth chip, preferably an AD8001 chip and an OPA690 chip, pulse current generated by the probe module 4 of the photoelectric mechanism is input into a photoelectric input port of the host 5 and is output to a photoelectric output port of the host 5 after being filtered and amplified by the signal processing circuit, an electric pulse signal generated by the electromagnetic mechanism 2 is input into an electromagnetic signal input port of the host 5 and is output through an electromagnetic signal output port of the host 5 after being converted, the electric pulse signal generated by the photoelectric mechanism is input into the photoelectric signal input port of the host 5 and is output through the photoelectric signal output port of the host 5 after being converted, and the impedance of the photoelectric signal output port and the electromagnetic signal output port is 50 ohms, the impedance of the host 5 is matched with that of the oscilloscope 7, the SMA connector is adopted for the signal input and output ports of the host 5, the output port of the host 5 is connected with the input port of the oscilloscope 7, and the oscilloscope 7 records the level signal take-off time.
Another technical solution for solving the above technical problems of the present invention is:
a magneto-optical speed measurement method for measuring the bullet speed is applied to the magneto-optical speed measurement system for measuring the bullet speed, and comprises the following steps:
installing, namely installing a magneto-optical speed measurement system on a light gas gun launching tube and supplying power to a host and an oscilloscope;
launching the shot, namely launching the shot when the installation is finished and the normal operation of the equipment is confirmed;
acquiring electromagnetic signal data, and respectively acquiring time nodes of two sets of electromagnetic mechanisms when the projectile passes through a magnetic field by a host;
acquiring photoelectric signal data, and respectively acquiring time nodes of two sets of photoelectric mechanisms when the shot shields a laser beam by a host;
and (3) measuring the flight speed of the projectile, combining electromagnetic signal data or photoelectric signal data with the distance between two sets of electromagnetic mechanisms or the distance between two sets of photoelectric mechanisms, respectively calculating magnetic measurement speed and optical measurement speed, wherein the magnetic measurement speed and the optical measurement speed are both the flight speed of the projectile within an error allowable range, and if the magnetic measurement speed and the optical measurement speed exceed the error allowable range, judging that the speed measurement fails, and measuring the speed again.
Specifically, in the step of acquiring electromagnetic signal data or acquiring photoelectric signal data, the data is displayed by the oscilloscope.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. The utility model provides a magneto-optical system that tests speed for bullet speed is measured, includes cartridge (1), host computer (5) and oscilloscope (7), host computer (5) respectively with cartridge (1), oscilloscope (7) are connected, be equipped with detector, its characterized in that in cartridge (1): the detector comprises at least one set of two electromagnetic mechanisms (2) and at least one set of two photoelectric mechanisms, the electromagnetic mechanisms (2) are nested in the side wall of the bullet tube (1), the photoelectric mechanisms are vertically arranged in the bullet tube (1), the host (5) is started, the photoelectric mechanisms acquire signals of the photoelectric mechanisms (2), the electromagnetic mechanisms (2) are arranged at intervals of the photoelectric mechanisms, and the distance between the electromagnetic mechanisms (2) is equal to the distance between the photoelectric mechanisms.
2. A magneto-optical velocimetry system for bullet velocity measurement according to claim 1, characterized by: the photoelectric mechanism is composed of a laser module (3) and a probe module (4), and the laser module (3) and the probe module (4) are fixed on two opposite sides of the side wall of the bullet tube (1).
3. A magneto-optical velocimetry system for bullet velocity measurement according to claim 2, characterized by: the barrel (1) comprises a head section (10), a tail section (11) and a protective plate (12), a connecting port (13) used for being connected to a light gas gun launching tube is arranged on the head section (10), two sets of electromagnetic mechanisms (2) are respectively arranged at the tail end of the head section (10) and the tail end of the tail section (11), and the head section (10), the tail section (11) and the protective plate (12) are respectively provided with a threaded hole (14) and are connected into a whole through a bolt.
4. A magneto-optical velocimetry system for bullet velocity measurements according to claim 3, characterized by: the head section (10) and the tail section (11) are provided with mounting holes (16) for mounting the photoelectric mechanisms, and the mounting holes (16) penetrate through the side wall of the barrel (1).
5. A magneto-optical velocimetry system for bullet velocity measurements according to claim 4, characterized by: laser module (3) are including laser instrument (31) and sleeve (32) of can focusing, the laser instrument of can focusing nestification is in sleeve (32), probe module (4) are including reducing sleeve pipe (41), sensing diode (42) and focusing lens (43) correspond each other and fix the inside of reducing sleeve pipe (41), sleeve (32) with reducing sleeve pipe (41) are fixed on mounting hole (16).
6. A magneto-optical velocimetry system for bullet velocity measurements according to claim 5, characterized by: the focusing lens (43) and the induction diode (42) are adjusted in relative distance through the reducing sleeve (41).
7. A magneto-optical velocimetry system for bullet velocity measurements according to any of claims 2 to 6, characterized by: the electromagnetic mechanism (2) comprises a magnetic ring (22) and cover plates (21) covering two sides of the magnetic ring (22), the cover plates (21) are circular rings with the same inner diameter as that of the cartridge (1), an enameled wire (23) is wound on the magnetic ring (22), and the enameled wire (23) is connected with the host (5) through an SMA connecting seat (18).
8. A magneto-optical velocimetry system for bullet velocity measurement according to claim 7, characterized by: the cover plate (21) is made of silicon steel.
9. A magneto-optical velocity measurement method for measuring the spring velocity is characterized in that: magneto-optical velocimetry system for bullet speed measurement as claimed in claims 1-8, comprising the steps of:
installing, namely installing a magneto-optical speed measurement system on a light gas gun launching tube and supplying power to a host and an oscilloscope;
launching the shot, namely launching the shot when the installation is finished and the normal operation of the equipment is confirmed;
acquiring electromagnetic signal data, and respectively acquiring time nodes of two sets of electromagnetic mechanisms when the projectile passes through a magnetic field by a host;
acquiring photoelectric signal data, and respectively acquiring time nodes of two sets of photoelectric mechanisms when the shot shields a laser beam by a host;
and calculating the flight speed of the projectile, combining electromagnetic signal data or photoelectric signal data with the distance between two sets of electromagnetic mechanisms or the distance between two sets of photoelectric mechanisms, respectively calculating magnetic measurement speed and optical measurement speed, wherein the magnetic measurement speed and the optical measurement speed are both the flight speed of the projectile within an error allowable range, and if the magnetic measurement speed and the optical measurement speed exceed the error allowable range, judging that the speed measurement fails, and measuring the speed again.
10. A magneto-optical velocimetry method for measuring the velocity of a projectile according to claim 9, characterized in that: and in the step of acquiring the electromagnetic signal data or the photoelectric signal data, the data are displayed by the oscilloscope.
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| CN202110976074.9A CN113567702A (en) | 2021-08-24 | 2021-08-24 | Magneto-optical speed measuring system for measuring bullet speed and magneto-optical speed measuring method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114088969A (en) * | 2021-11-19 | 2022-02-25 | 西南交通大学 | Light-gas gun flying piece speed measuring device based on electromagnetic induction |
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