CN2874450Y - Gun killing power detecting system - Google Patents

Abstract

The utility model relates to a speed metering device, in particular to a gun killing capacity detection system metering with light and electricity. The gun killing capacity detection system comprises a gun bullet device, whose case is arranged with two speed metering sensors positioned between the gun fixing mechanism and a bullet resistance body. The output ends of the two sensors are connected with a sensing amplifier, and the output of the sensing amplifier is connected with the data processing computer. The utility model can quickly locate flying bullets in the non-contact way, thus accurately finding out the preliminary speed and kinetic energy of bullets to further appraise the killing capacity of guns. The utility model offers a scientific and accurate appraisal basis for investigating and solving crimes with guns and making criminals receive due law punishment.

Description

The gun killing power detecting system

Technical field

The utility model relates to a kind of velocity measuring device, specifically a kind of gun killing power detecting system that utilizes photoelectricity to measure.

Background technology

Current criminal offense becomes trans-regional crime by regionality crime, and the crime personnel develop into intellectual crime by clique's type, upgrades to and makes major case continuously by making little case.Especially gun violence, very harmful to social security.Be rapid this class gun violence case of detection, and give the offender, in juridical practice, just have a problem that the gun of gun violence molecule are scientifically tested and checked with deserved legal sanction.As: 1. whether this rifle has lethality, and 2. whether this rifle has the ability of disabling, and 3. how or the like the performance of this rifle and destruction thereof.The solution of these problems can provide science and expert's conclusion accurately for law, to crack down on crime effectively.At present domestic to regular standard gun, generally all determine its performance and effect with reference to its production standard, and to accounting for the most non-standard gun of crime case, and shabby standard gun, the then detection method of neither one standard and pick-up unit.Therefore can't provide one accurately, the expert's conclusion of science, the seriousness of law can not be demonstrated fully.

The utility model content

The purpose of this utility model is with regard to providing a kind of gun killing power detecting system that can accurately identify the kill capability of shabby standard gun and non-standard gun, so that the law appraisal basis of science to be provided in cracing down on crime.

The utility model is achieved in that these gun killing power detecting system includes gun and the bullet device, at gun on the casing of bullet device two tachogenerators are housed, two tachogenerators between the gun fixed mechanism and resistance body of bullet device at gun, the output of two tachogenerators connects sensor amplifier, and the output of sensor amplifier is received on the data processing counter.

According to relevant physics principle, the gun kill capability is that the first kinetic energy of the bullet launched with these gun is directly related.Initial kinetic energy is big, and then penetration power is strong, kill and wound, destructive power is just big, on the contrary then opposite.If can determine the initial kinetic energy of bullet, both at home and abroad to the research test data values of gun lethality degree, can make science, identify accurately the kill capability of these gun in conjunction with at present.What the bullet quality that equals the first kinetic energy of bullet multiply by bullet goes out the thorax initial velocity.The bullet that gun are launched can the bullet device by gun and be collected, and weighing and calculate the bullet quality, goes out the thorax initial velocity in conjunction with the bullet of measuring again, can calculate bullet kinetic energy just, can detect the kill capability of gun thus.Like this, to the detection of gun kill capability, just transform into measurement to the bullet initial velocity.

The utility model has solved accurately locatees fast to the noncontact of bullet in motion process of high-speed flight, thereby what can detect bullet exactly goes out thorax initial velocity and first kinetic energy, and then scientifically identify the kill capability of gun, for tracking down the gun violence case rapidly, make the offender obtain due legal sanction, science, appraisal basis accurately are provided.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the structural representation of tachogenerator in the utility model.

Fig. 3 is the structural representation of fixed head in the tachogenerator.

Embodiment

As shown in Figure 1, the gun in the utility model the pistol bullet catcher that the bullet device can be selected the CN92201521 patent disclosure for use, install pick-up unit based on this additional.Specifically be to install on the casing 1 of pistol bullet catcher between the gun fixed mechanism 3 and resistance body 4 of former and later two tachogenerator 2, two tachogenerators at regular intervals in the pistol bullet catcher.The output of two tachogenerators connects sensor amplifier 5.The output of sensor amplifier 5 connects the data processing counter.The data processing counter is to be connected to form by chip microprocessor 6, display 7, keyboard 8, printer 9 and working power 10.This data processing counter can utilize existing conventional components and chip overlap joint to form, as adopts 8031 series monolithic systems to connect and compose.

The course of work of this device is: when bullet is launched, at first detect out the chamber bullet by first tachogenerator near muzzle, send an electric signal, this signal is after sensor amplifier 5 amplifies shaping, form a pulse signal and be input to chip microprocessor 6, the high-speed counter that starts microprocessor internal carries out timing.When bullet flies over second tachogenerator, as mentioned above, microprocessor 6 receives second pulse signal, stop counting, and by predefined bullet flying distance (i.e. the installing space of two tachogenerators), calculate the initial velocity of bullet by V=L/T, and on nixie display 7, shown.After measuring bullet and going out thorax speed, in the resistance body 4 of pistol bullet catcher, take out the bullet bullets again, after weighing is calculated, obtain the bullet quality, input to microprocessor 6 from keyboard 8.Calculate the first kinetic energy (bullet quality * initial velocity) of emission of this bullet by microprocessor, and give demonstration.Microprocessor compares the reference data of these data with the lethality degree that has deposited in simultaneously, draws the kill capability of this bullet.By " printing " key, then mini-printer (TUP401) prints total data, with this appraisal basis as a science at last.

Invention emphasis of the present utility model is in the research of tachogenerator.In conjunction with two tachogenerators 2 in the visible the utility model of Fig. 2 is that two row infrared transmitting tubes 14 are installed on fixed head 13, and the printing opacity mouth of leaving in the middle of the fixed head 17 forms a transmissive slit between two row infrared transmitting tubes (Fig. 3).Be provided with infrared light transmission plate 15 in fixed head 13 front portions, the optical lens 12 that can make light focusing is housed at the fixed head rear portion, infrared remote receiver 11 is positioned on the focus point of optical lens.On the opposite of infrared light transmission plate 15 casing 1, be provided with infrared absorption plate 16.Two row infrared transmitting tubes 14 in this tachogenerator send the diffuse infra-red linear light of specific wavelength, to form an infrared light face, the bullet by this face all can be detected.Infrared absorption plate 16 is absorbed each diffuse infra-red linear light, does not form reflected light.When producing reflected light, this light reaches on the optical lens 12 by the printing opacity mouth 17 on the fixed head 13 as bullet, and is focused on by optical lens, with this light reinforcement, and reaches on the infrared remote receiver 11 on the focus point.For preventing that flame that muzzle sends in shooting moment from influencing receiver and producing error signal, ad hoc infrared light transmission plate 15.This light-passing board only can see through the infrared light of the specific wavelength that infrared transmitting tube 14 sends, and to other visible lights or invisible light, all can be blocked, thereby has prevented misoperation effectively.The setting of narrow slit printing opacity mouth 17 also makes and has only the light vertical with the printing opacity mouth just can pass through, thereby improved bullet bearing accuracy and signal launch accuracy, makes the also corresponding raising of computational accuracy of data processing counter.

Claims (3)

1, a kind of gun killing power detecting system, include gun and the bullet device, it is characterized in that on gun the casing (1) of bullet device, two tachogenerators (2) being housed, two tachogenerators are positioned at gun and between the gun fixed mechanism (3) and resistance body (4) of bullet device, the output of two tachogenerators connects sensor amplifier (5), and the output of sensor amplifier (5) is received on the data processing counter.

2, gun killing power detecting system according to claim 1 is characterized in that described data processing counter is connected to form by chip microprocessor (6), display (7), keyboard (8), printer (9) and working power (10).

3, gun killing power detecting system according to claim 1, it is characterized in that tachogenerator (2) is to go up at fixed head (13) two row infrared transmitting tubes (14) are installed, the printing opacity mouth of leaving in the middle of the fixed head (17) is between two row infrared transmitting tubes, be provided with infrared light transmission plate (15) in the fixed head front portion, the optical lens (12) that can make light focusing is housed at the fixed head rear portion, infrared remote receiver (11) is positioned on the focus point of optical lens, is provided with infrared absorption plate (16) on the opposite casing (1) of infrared light transmission plate (15).