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Initial velocity sensor and velocity measurement method

An initial velocity and sensor technology, applied in the field of sensors, can solve the problem of inability to measure the initial velocity of bullets and shells, and achieve the effect of simple structure

Pending Publication Date: 2020-11-20
成都科锐传感技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of initial velocity sensor, is used to solve the problem that the initial velocity of bullet shell cannot be measured in the prior art

Method used

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  • Initial velocity sensor and velocity measurement method
  • Initial velocity sensor and velocity measurement method
  • Initial velocity sensor and velocity measurement method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] combined with figure 1 As shown, an initial velocity sensor includes a mounting base 500 for being placed on the gun bore or the outlet of the gun bore 100, the mounting base 500 is provided with a mounting part 200 for generating a magnetic field, and the mounting part 200 is connected to a connector 800, the connector 800 is used to transmit the induced electromotive force to an external device.

[0042] The mounting base 500 is set at the exit of the gun bore or the gun bore 100. When a shell or bullet 300 flies out of the gun bore or the gun bore 100, the shell or bullet 300 will cut the magnetic field in the magnetic field to generate an induced electromotive force, which will be generated by the connector 800. The induced electromotive force is transmitted to the external equipment, and the induced electromotive force U has:

[0043] U=BL 0 v

[0044] Wherein B is the magnetic field intensity generated by the mounting part 200, L 0 The width of shell or bullet...

Embodiment 2

[0046] On the basis of Example 1, combined with figure 2 As shown, the direction of the arrow is the passing direction of shells or bullets, the installation base 500 includes a cavity and a cover 400, and the installation part also includes an insulating bracket 600 installed in the cavity and installed on the The coil 700 on the insulating support 600, the two ends of the coil 700 are respectively connected to the connector 800 and the excitation.

[0047] When the core component of the mounting part 200 that generates the magnetic field is the coil 700, the magnitude B of the generated magnetic field is:

[0048]

[0049] Among them, N is the number of turns of the coil; μ is the magnetic permeability, I is the current in the coil, and L is the length of the coil. When a bullet or shell passes through the magnetic field, the magnetic flux of the magnetic field changes, and there will be an induced electromotive force U in the coil 1 ,

[0050] u 1 =BL 0 v

[0051]...

Embodiment 3

[0059] On the basis of Example 2, combined with image 3 As shown, the direction of the arrow is the passing direction of shells or bullets. The insulating brackets 600 are two groups arranged axially along the bore or the gun bore. The coils installed on the two groups of insulating brackets are the same but opposite in polarity, respectively The first coil 900 and the second coil 910 .

[0060] The two sets of coils are exactly the same, but their current excitation directions are opposite, and two magnetic fields with opposite polarities can be obtained locally. At the same time, the output voltage of the two coils is differentially processed, and a stable electromotive force close to zero can be obtained at static time. When a bullet passes through, an electromotive force will be generated respectively. Due to the difference processing, the value of the electromotive force has a higher value. The signal-to-noise ratio is more precisely related to speed.

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Abstract

The invention discloses an initial velocity sensor, which comprises a mounting base sleeved at a bore or a bore outlet. A mounting piece for generating a magnetic field is arranged on the mounting base, the mounting piece is connected with a connector, and the connector transmits induced electromotive force to external equipment. The invention further discloses an initial velocity measurement method. A mounting piece used for generating a magnetic field is installed at an outlet of the bore or the gun bore. When the cannonball or the bullet penetrates through the magnetic field, the mounting piece generates induced electromotive force U, and the initial velocity v of the cannonball or the bullet is calculated according to the formula that U = BL0v. The sensor can be directly installed at abore or a bore outlet, a stable magnetic field is generated, the initial velocity of a bullet or a cannonball is obtained according to induced electromotive force generated when the bullet or the cannonball cuts magnetic lines of force, and the structure is simple. The sensor can be connected with an acquisition system in real time through a connector, and provides real-time data for the acquisition system for online monitoring, calculation and analysis of the acquisition system.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to an initial speed sensor and a speed measuring method. Background technique [0002] Guns and cannons are one of the main equipment of the army today, and the parameters of guns and cannons are one of the important indicators to measure guns and cannons. The firing speed of cannon (sub) bullets has always been the most concerned parameter of cannon design units, manufacturing units and user departments. However, due to the high energy, high speed and high temperature of cannon (sub) bullets, it is difficult to measure The speed cannot realize real-time online detection. Contents of the invention [0003] The object of the present invention is to provide an initial velocity sensor for solving the problem in the prior art that the initial velocity of bullets cannot be measured. [0004] The present invention solves the above problems through the following technical solutions: ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P3/66
CPCG01P3/665
Inventor 余苗包绍明黄涛李婷
Owner 成都科锐传感技术有限公司