WO2019098956A2

WO2019098956A2 - The acoustic shield formed by ultrasonic sound waves

Info

Publication number: WO2019098956A2
Application number: PCT/TR2018/050363
Authority: WO
Inventors: Yusuf KANDİL
Original assignee: Kandil Yusuf
Priority date: 2017-08-08
Filing date: 2018-07-13
Publication date: 2019-05-23
Also published as: WO2019098956A3

Abstract

The invention relates to an acoustic shield (10) to be used in security sector, diverting the bullets from the desired target with the sound pressure by forming specific geometric shapes or by spreading sound waves from a single point around the person to be protected or a particular area. Due to the ultrasonic signals produced in sound generators (1) with randomly determined levels of loudness, bullets are deflected from their trajectories.

Description

THE ACOUSTIC SHIELD FORMED BY ULTRASONIC SOUND WAVES

Technical Field

The invention is about the acoustic shield that obstructs the bullets fired from long-barreled guns from a distance on the open field hit the target by distorting the signals emitted by the sound generators producing ultrasonic sound waves to be used in the security sector.

In particular, the invention is based on the principle of diverting the bullet from the desired target with the sound pressure by forming specific geometric shapes (triangle, quadrilateral, pentagon, etc.) or by spreading sound waves from a single point around the person to be protected or a particular area. These geometric shapes might be zigzag, triangle, quadrilateral, pentagon, etc. with deflectors at each corner, according to the topography of the protected area and the surrounding construction.

State of the Technic

Today, various methods are applied to ensure the safety of people. One of them is to give armed guards to the person to be protected. However, the safety of the person to be protected depends on the reflexes and shot capabilities of the guards during any attack. Another type of protection is remote snooping and protection by positioning the snipers on the building tops. However, in this method, as mentioned above, the safety of the person to be protected depends on the reflexes and shot capabilities of the marksmen.

In the present technique, there are methods for directing sound waves. The two methods are mentioned in the patent applications numbered US8194502 and US5973999. By way of the two before mentioned patent applications and taking advantage of the pressure generated by the sound wave, the invention is given a ground. The application numbered US8194502 relates to the routing of audio outputs of warning devices. And the application numbered US5973999 is about the production of high pressure sound waves by superimposing acoustic source outlets. The aim is to make sound waves like a non-lethal weapon to disperse the crowds and neutralize the targets. As can be seen, neither of these two applications has been put forward in order to deflect long-barreled weapons bullets and to ensure the safety of persons. On the contrary, it is aimed at frightening the people away using the disturbing feature of loud voice directly on humans. The Aim of the Invention

The invention which is inspired from current situations and it aimed of solving the negative things which is mentioned above.

The main purpose of the invention is creating a secure area in specified zone by sending sound waves in specific direction (like a projector lightens a specific area)

Invention spreads sound waves to different direction and thanks to this, it can change the way of bullet by applying pressure force to the bullets which are coming outside. Thus, a secure area is created in the square (or other geometric shapes)

Another aim of the invention is blocking assassination attempt in any armed attack as a result of changing the bullet’s direction by creating a shield which provides security of people.

One another aim of the invention is revealing a system which provides the security of people by minimizing the human factors.

The structural and characteristic features and all advantages of the invention will be understood clearly thereby the shapes given below and detailed explanation written by means of referring these shapes, therefore evaluation must be done by considering these shapes and explanations.

The Figures which Help to Understand the Invention

Figure 1 : It shows spreading the ultrasonic sound waves which come from the sound sources. Figure 2: It is representative view related changing the bullet direction by using ultrasonic sound waves which spread from the sound sources.

Figure 3: It is general view of the acoustic shielding which provides to change the bullet direction and to spread the ultrasonic sound waves coming from the sound sources.

Drawings are not necessary to be measured and non-mandatory details can be ignored to understand current invention.

Explanation of the Part Reference

10. Acoustic Shield

S. Deflector Device

1. Sound Generator

2. Filter

2.1. Acoustic Canal

3. Engine 4. Electronic Control Circuit

5. Voltage Source

6. Central Control Unit

Detailed Explanation of the Invention

In this explanation, preferred structures of the invention is explained that only being more understandable and there is not any limited effect.

The invention becomes suitable for use by orienting the deflector devices (S) which spread sounds in specific directions in a specific area. Audio-frequency which is produced by sound generator (1 ) which is used for deflector device(S) is ultrasonic sounds (over 20 Khz) out of bother around it. An important advantage of ultrasonic sounds is being spreadable on only one direction like spot lights. Like in figure 3, it is provided to direct the waves which generate from the sound generator^ ) linearly. The waves which will deviate from the direction by putting filter(2) which has acoustic canals(2.1 ) in front of the sound generator(l ) will be directed to the way. In figure 2, refracting angle is seen according to the frequency. Surface of every single sound generator(l ) is covered with outward-oriented globe which has acoustic canals(2.1 ) around it and parabole or perforated metal filter(2) which is plane figure. Acoustic canals(2.1 .) which is on the surface, can be cylinderical, hexangonal etc. Sound generators are also in these acoustic canals(2.1 .)

Acoustic shield(10) which is the subject of the invention creates sound waves on appropriate direction and appropriate frequency with deflector device(S) according to the location of buildings in the environment and environment of the people who need protecting. This frequency must be too loud to hear for the people and animals around and it should be different from structures’ frequency especially buildings. As a result of the specific areas and people who need protecting are covered by the sound waves like a wall, which is provided the bullets are spreaded against the bullets which can get through from that wall by implementing pressure force with ultrasonic sound. In this way, a secure environment is provided for people who need protecting .Quantity and location of the deflector device(S) changes according to the people who need protecting. Loudness of sound should be over 160 decibel. This rate is 1 m far away from the deflector device(D).

Acoustic shield(10) which is the subject of the invention; consists of at least one sound generator(l ) which ensures to produce 160 decibel or over sounds, acoustic canals(2.1 .) which is placed sound generator(l ) in, a filter which blocks to spread / deviate the sound, an engine which provides filter’s directions, electric control circuit(4) which changes the produced signal frequency, loudness and directions or provides the deflector device(D) to turn on/off, which controls the engines and changes the loudness by means of amplification or decrease the sound consistently, contains a voltage source(5) like generator and the system that energy is taken from, and can increase deflection effect by using more than one time in specific areas. Also the central control unit (6), which provides to be done functions of electric control circuit(4) by distance operator and defined algorithms automatically and to be able to be controlled from a single center correspondingly, can take place in this invention.

It is explained below why the sound which will be produced has to be at least 160 decibel:

160 decibel applies 2000 newton force per square meter.For instance ; when’F’ force is applied to a bullet which the surface of the bullet drop is‘a’ , for finding‘F’ value , if we take‘a’ value as 1 cm² , the force of the 160 decibel sound to 1 cm² will be 0.2 newton approximately.

F = m^*a

a = v / t

v = x / t

Flere; x = a^*t² is obtained.

F: Sound pressure force which effects the surface of the bullet.

a: Deviation acceleration of the bullet in horizontal direction (when the effects of wind and other ballistic forces, in the direction of sound power.)

m: Mass of the bullet

v : Speed of the bullet in horizontal direction(deviation speed in normal speed) There is a 90 degrees angle between the orbit of the bullet and the direction of v speed when one is in x and one is in y direction.

t: The time spent between the bullet leaves the source and it reaches the target.

Another force in a vertical or almost vertical direction to the horizontal orbit of the bullet will effect and it will deviate it from its direction. The sounds more than 160 decibels (measured 1 m far from the source) applies almost enough force to deviate the bullet (because mass of the bullet, the area and distance change.) Shortly, this can be called minimum sound force to deviate sufficiently.

Sound generators(l ) can be fixed to anywhere or they can be loaded to a vehicle so mobile. This process is performed by making use of the feature of the sound to move objects. 1 pascal is the pressure when 1 Newton force is applied to 1 cm² area. Sound generators(l ) take their power from voltage sources(5) (city electricity or generator etc.) Some examples have been given about decibel and force value of sound below;

• 100 db 2 pascals

• 120 db 20 pascals • 140 db 200 pascals

• 160 db 2000 pascals

• 180 db 20000 pascals

These are the force values.

The power and frequency of the sound used in the invention vary according to the width of the area and structures. The frequency used will be non-hearable frequency not to disturb the people or animals that can be near. Human ear can hear the frequencies between 20 and 20000 Hz. 20000 Hz and higher sounds are quiet convenient because they cannot be heard by people. High frequency sounds can be directed in a single direction like lasers can send the ray to a single direction. By this means, applying the sound power will be more controlled. For instance; sound generator(l ) is located to the corners of a tetragon and a safe area is formed by sending sound waves to a specific direction along the sides of the tetragon from the ground. (See figure 1 )

Sound waves are formed in the shape of a wall in a specific height according to the area to be protected. The height is for the people not to get disturb. The shape can be triangle, pentagon, hexagon or other shapes instead of tetragon. The frequency is changed constantly and randomly for any objects or structure not to pass to resonance and get damage.

The force, direction and way should be changed randomly or according to a function determined before.

The operator will prevent a routine by changing the used function and the parameters via central control unit(6). Thus , another people’s calculating the necessary deviation by finding the function with the help of microphone or sensors and shooting with a correction in the shooting way by guessing the deviation will be prevented. As an example for this variation sound power will increase or decrease in each second or while sound comes from the left suddenly it will come from the right.

The acoustic shield(10) of the invention , spreads outward sound waves around a specific area. Sound can consist of piezoelectric or planary mahnetic speakers. The sequence of the sound generators(l ) and the direction of sound is shown as an example in Figure 1 . Here, sound waves coming from the sound generators(1 ) at the corners of the tetragon will deviate the bullets coming from any directions in different levels. Bold lines show the beginning and finishing points of the sound waves coming from the sound generators(l ) , fine lines show the direction of the sound waves. It is not necessary for the sound generators(l ) to form a plane. The reason why the sound waves are not spreaded below a specific height is to prevent people for being exposed to ultrasonic sound waves. Because the sound waves will weaken as a person goes far from the sound generator(l ), after a specific distance ultrasonic sounds will decrease to the level which will not disturb people. With the help of the engines(3) in Figure 3 the ultrasonic sound signals taken from the sound generator(l ) will be able to be moved upward-downward and to the right or left.

There are sound generators(l ) inside the acoustic canals(2.1 ) seen in Figure 3 Detail A. There is a different sound generator(l ) in each acoustic canal(2.1 ). The diameter of the mentioned acoustic canals(2.1 ) is bigger in the connection part with the sound generator^ ) than the diameter of the part where sound gets out of the acoustic canal(2.1 ).

Mentioned sound generator^ ) includes a transducer like tool which transforms electric power to sound power. This mentioned transducer can be piezoelectric transducer, electro-acoustic transducer, magnetostrick transducer, electrostatic transducer or planary transduce. Central control unit(6) is the control computer which enables all features to be controlled from a single center and it also enables the deflector device(D) to work coordinately when there are more than one deflector device. It prevents the sound power, which is generated by two different located deflector device, to coincide. For example; while a bullet is moving a device generates sound on the left and another device generates on the right, to prevent the total power to be zero all diverters(D) will be able to be controlled from a single center.

The intended acoustic canals(2.1 ) on the filter(2) can be closed and the outgoing direction of the sound can be arranged. These canals can be horizontal or vertical. The sound generators(l ) (transducer groups) positioned horizontally or vertically in the same align with any structure in the direction of the sound can be closed and the sound is prevented to reach the structure. Also the parts of the sound generators(1 ) which direct the sound to the left or right can be closed or opened and the bullet can be directed to the right or left. This process can be done by an operator simultaneously or automatically by functions. Electronic control circuit(4) can do this operation automatically, the central control unit(6) can perform this process both automatically or manually as well. By means of sensors on the diverters(D) turning over of the diverter can be determined and with the generated signal device can be automatically shut down.

Claims

1. An acoustic shield (10) diverting the bullets from the desired target with the sound pressure by forming specific geometric shapes or by spreading sound waves from a single point around the person to be protected or a particular area, characterised by comprising:

a deflection device (S) increasing deflection effect by using more than one around the specified region, comprises:

• sound generators (1 ) producing an audio signal, positioned over a filter (2) that prevents sound from spreading/deflecting,

• an engine (3) providing the filter (2) with right-left, up-down movement,

• an electric control circuit (4) changing the frequency, loudness, way and direction of the produced signal randomly or depending on a function, enabling the deflection device (S) to be turned on and off, continuously changing the intensity of the sound by increasing or decreasing the intensity of the sound with respect to time, and controlling the engines (3),

• a voltage source (5) to provide required energy.

2. The acoustic shield (10) according to Claim 1 , comprises a central control unit (6) enabling the functions of the electronic control circuit (4) to be carried out automatically by the remote operator or by the defined algorithms and to operate the deflector devices (S) in a coordinated manner from a single center.

3. The acoustic shield (10) according to Claim 1 , comprises acoustic canals (2.1 ) on filter (2) surface equipped with sound generators (1 ) inside.

4. The acoustic shield (10) according to Claim 1 , wherein the produced sound is ultrasonic.

5. The acoustic shield (10) according to Claim 1 , wherein the loudness of the produced sound is 160 decibel or over.

6. The acoustic shield (10) according to Claim 1 , wherein the deflection devices (S) are positioned at each corner of the geometric shapes formed according to the topography of the protected area and the surrounding structures.

7. The acoustic shield (10) according to Claim 1 , comprises a piezoelectric transducer, an electro-acoustic transducer, a magneto-strict transducer, an electrostatic transducer or a planer magnetic transducer inside the sound generator (1 ), which converts the electric energy into sound energy.