KR101098119B1 - Muzzle velocity corrected fuse and controlling method thereof - Google Patents

Abstract

The present invention relates to a muzzle velocity correction fuse and a control method thereof. The muzzle velocity correcting fuse of the present invention includes a fuse circuit for outputting a corresponding detonation signal according to the explosion condition data received from the fire control device, and a detonation device for initiating an explosion in accordance with the detonation signal from the fuse circuit. The fuse circuit may include: a rotation sensor configured to generate a sine wave signal by the rotation of the bullet and the earth's magnetic field when the bullet is fired; A signal processing circuit for receiving a sine wave signal generated by the rotation sensor and converting the sine wave signal into a square wave signal to enable digital counting; A function of measuring the rotation speed and rotation time of the bullet based on the square wave signal obtained through the signal processing circuit after the launch of the shot; calculating the error between the standard and actual muzzle velocity using the measured rotation speed and rotation time; and The main controller includes a function of calculating a time correction coefficient according to a range based on the charged time data, a function of correcting the charged time data using a calculated error, and a calculated time correction coefficient.

According to the present invention, the time correction coefficient according to the range is calculated based on the calculation of the error between the standard ball speed and the actual ball speed and the loaded time data, and the time data loaded using the ball speed error and the time correction coefficient. By correcting this, the fuse itself can further improve the accuracy of the air explosion distance.

Description

Muzzle velocity corrected fuse and controlling method

The present invention relates to a fuse mainly used for aerial explosives that explode in the air in front of or above the target, and more particularly, generates a rotation signal using a rotation sensor and rotates the rotation signal. By calculating the number and rotation time to calculate the error of the standard muzzle velocity and the actual muzzle velocity, by correcting the charged time data using the calculated muzzle velocity error and the time correction factor according to the range The present invention relates to a muzzle velocity correction fuse and a control method thereof capable of increasing the accuracy of aerial explosion.

In general, mechanical and chemical fuses in coal can be classified into a shock function that collides with a target to explode and a time function that explodes when a preset time is reached. However, such mechanical and chemical fuses are limited in terms of killing effects on concealed / hidden targets.

Electronic fuses have mechanical and chemical fuse functions, including proximity functions using radio waves, self-explosion of fuses for the safety of allies on the battlefield, and impact delay functions that explode after a certain period of time after an impact. Various complex functions such as compactness and precision are possible, but it is necessary to secure a specific power supply (battery, etc.) suitable for the purpose.

Air explosives measure the distance to the target with a fire control system, and charge a time or rotational speed corresponding to the target distance with a fuse to fire a bullet, and immediately explode in the air when the charged time or rotational speed is reached. It's a shot.

There are two methods for determining the time of explosion of the explosive bomb: a timed fuse system and a rotating fuse system.

The timed fuse system automatically calculates the flight time corresponding to the target distance from the fire control system based on the standard muzzle velocity and loads it automatically. The shots will explode in the air when the charged time and the time measured by the internal timer coincide.

The time-type fuse system has an advantage that the configuration circuit is simple and easy to implement. However, since the flight time is charged and fired by the standard muzzle velocity, there is a disadvantage that the air explosion distance error due to the muzzle velocity error increases. In addition, in order to improve the accuracy by correcting the flight time, a function that automatically charges the flight time corresponding to the target distance according to the muzzle velocity error is required, which is technically disadvantageous and disadvantages that the gun is complicated There is also.

Rotating fuse system uses the principle that the moving distance of one round from the muzzle is fixed regardless of the speed of the bullet by the angle of barrel liner, and converts the distance to the target by the number of revolutions. The inside of the fuse is equipped with a rotation sensor to compare the number of rotations and the number of rotations measured from the sensor to explode in the air when the two values coincide.

The rotatable fuse method has a small air blast distance error due to a muzzle velocity error in a short range, but the air blast distance error increases when the range is increased (in the case of a long range).

The present invention was created to improve the problems of the prior art as described above, by combining a rotating fuse method based on a time-type fuse method, based on a sine wave signal generated by a rotation sensor after firing a bullet. Calculate the error between standard and actual muzzle velocity by measuring the number of revolutions and rotation time, and correct the time data that was initially loaded by using the calculated error and time correction factor according to the range, and then blow the air by itself. An object of the present invention is to provide a muzzle velocity correction fuse and a control method thereof that can improve accuracy.

In order to achieve the above object, the muzzle velocity correction fuse according to the present invention,

A fuse circuit for outputting a corresponding detonation signal according to the explosion condition data input from the fire control device, and an initiator for initiating an explosion in accordance with the detonation signal from the fuse circuit;

The fuse circuit,

When the bullet is fired, the rotation detection sensor for generating a sine wave signal by the rotation of the bullet and the earth magnetic field;

A signal processing circuit for receiving a sine wave signal generated by the rotation sensor and converting the sine wave signal into a square wave signal to enable digital counting;

A fuse operation algorithm (a kind of software program) is mounted, and a function of controlling the overall operation of the fuse, and the explosion control data is controlled by the explosion control to check whether the explosion condition data loaded from the fire control device before firing the bullet is loaded. A function of transmitting to a device, an external input blocking function for blocking external unnecessary input such as noise after the fuse is inserted, a function of storing the explosion condition data into mode data and time data, and the signal processing circuit after firing the bullet Based on the square wave signal obtained through the function to measure the number of revolutions and the rotation time of the bullet, the flight time of the bullet, the calculated error between the standard and actual muzzle velocity using the measured rotation and rotation time And calculating the time correction factor according to the range based on the loaded time data. A function of correcting the charged time data using the calculated error and the calculated time correction coefficient, a detonation determination function for outputting the detonation signal by judging the explosion condition according to the operation mode of the fuse specified in the mode data, and shot firing A main control unit for restraining the detonation function so as not to explode before escaping the safe distance from the launching point in order to secure a safety distance at the time of launching, and performing the safety loading function such that the detonation function is performed only when the safety distance is out of the safety distance;

An external input blocking circuit for blocking input of an external unnecessary signal such as noise by an external input blocking function of the main controller;

A power / signal separation circuit for separating power from a charging signal by supplying power input from the fire control device in only one direction;

A power charging circuit which receives the power separated by the power / signal separation circuit and charges the capacitor to supply power of the fuse before firing of the bullet;

A firing / impact detection circuit for detecting a launch point of the bullet and an impact point during flight and outputting a launch and shock signal to the main controller;

A detonator circuit which delivers the energy charged in the detonation capacitor to the detonator by the detonator signal output from the main controller so that the detonator is detonated by the energy; And

A logic circuit is provided, and the detonation signal is inputted to the detonation circuit only when the detonation signal output from the main control unit and a signal generated when the safety distance is released after the shot is released are simultaneously input. It is characterized by including a safety loading circuit that does not explode even if an explosion signal occurs before the safety distance after the launch of the explosion.

Here, preferably, apart from the power charging circuit, it may further include an internal power supply element that is activated when the bullet is fired to supply power to the fuse circuit.

In addition, the rotation sensor is a rod-shaped core made of a material having a high permeability (for example, Permalloy), and coupled to both ends of the core in order to efficiently focus the magnetism present in the atmosphere It consists of a pair of supporting members to support and a coil wound around the outer peripheral surface of the body of the core between the pair of supporting members to generate a sine wave signal in accordance with the rotation of the bullet.

The signal processing circuit may further include a low pass filter that passes only signals of a predetermined frequency band to remove noise included in the sinusoidal signal generated by the rotation sensor, and a low pass filter that passes through the low pass filter. And a signal amplifying circuit for amplifying the signal to a predetermined magnitude, and an output circuit for receiving the signal amplified by the signal amplifying circuit and converting the signal into a square wave signal for enabling digital coefficients.

In addition, the operation mode of the fuse specified in the mode data and controlled by the main control unit may be an air explosion mode which explodes when the flight time measured by the internal timer of the main control unit matches the time of flight of the corrected time data. ; An impact mode in which a bullet in flight will explode when an impact is detected by the firing / impact detection circuit; The bullet in flight is classified into a shock delay mode that explodes when a predetermined delay time elapses after a shock is detected by the launch / shock detection circuit.

In addition, when the explosion is not performed by the operation mode, the main controller determines whether the flight time of the bullet coincides with a preset self-detonation time, and if so, causes the bullet to self-explode.

In addition, the firing / impact detection circuit is not separated from the firing switch and the impact switch, respectively, is made of a structure that can detect the firing and impact in a single mechanism.

In addition, in order to achieve the above object, the control method of the muzzle velocity correction fuse according to the present invention,

It outputs the corresponding detonation signal according to the explosion condition data received from the fire control system, and includes rotation detection sensor, signal processing circuit, main control part, external input blocking circuit, power / signal separation circuit, power charging circuit, and fire / shock detection. A control method for a muzzle velocity correcting fuse including a fuse circuit including a circuit, a safety loading circuit, and an explosion circuit, and an initiator for initiating an explosion in accordance with an explosion signal from the fuse circuit.

a) initializing the main controller to operate when power is supplied from the fire control device and the power charging circuit is charged before the shot of the bullet;

b) when the initialization is completed, the explosion condition data charged from the fire control device is transmitted from the main controller to the fire control device, and then the external input blocking circuit cuts off the input of an external unnecessary signal such as noise. Making;

c) storing explosion condition data charged from the fire control apparatus into time data and mode data by the main controller;

d) detecting a launch time by the launch / shock detection circuit, and outputting a launch signal to the main control unit when the shot is fired;

e) measuring, by the main control unit, the number of revolutions and the rotation time of the bullet based on the square wave signal from the signal processing circuit according to the input of the firing signal;

f) calculating an error between the standard muzzle velocity and the actual muzzle velocity by the main control unit using the measured rotation speed and the rotation time, and calculating a time correction coefficient according to the range based on the loaded time data;

g) correcting the stored time data by the main control unit by using the calculated time difference coefficient and the error between the calculated standard muzzle velocity and the actual muzzle velocity;

h) determining whether the shot deviated from the safety distance by the main control unit, and if the safety distance deviated, checking the operation mode specified in the mode data;

i) comparing the time data corrected in step g) with the flight time of the bullet, by the main control unit, if the identified operation mode is an air explosion mode;

j) The comparison result, characterized in that it comprises the step of causing the explosion if the flight time of the corrected time data and the bullet coincides, or if the predetermined self-detonation time has elapsed if the air explosive is not.

Here, preferably, if the operation mode identified in the step h) is the shock mode, detecting the impact by the launch / shock detection circuit; And when the shock is detected, exploding the shock, or if the shock does not explode, when the preset self-detonation time elapses.

In addition, if the operation mode identified in the step h) is a shock delay mode, detecting the impact by the firing / impact detection circuit; Delaying a predetermined time when a shock is detected; And a step of causing the self-detonation when a predetermined self-detonation time elapses when the shock delayed explosion or the shock delayed explosion has not occurred after a predetermined time delay.

According to the present invention, as a composite of the rotational speed measurement method of the rotating fuse method based on the time-type fuse method, by using a sine wave signal generated by the rotation sensor according to the rotation of the bullet after the launch of the bullet Calculate the error between the standard muzzle velocity and the actual muzzle velocity, calculate the time correction coefficient according to the range based on the loaded time data, and correct the charged time data using the muzzle velocity error and the time correction coefficient, It can further improve the accuracy of the explosive distance by itself.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view schematically showing the overall configuration of a muzzle velocity correction fuse according to the present invention.

Referring to Figure 1, the muzzle velocity correction type fuse according to the present invention, a fuse circuit 110 for outputting a corresponding detonation signal in accordance with the explosion condition data received from the fire control device 100, and the fuse circuit 110 A detonator 130 for initiating an explosion in accordance with the detonator signal from

The fuse circuit 110 is a rotation sensor 111, a signal processing circuit 112, an external input blocking circuit 113, a power / signal separation circuit 114, the main control section 115, a safety loading circuit 116 , A power charging circuit 117, a launch / shock detection circuit 118, and an initiator circuit 119.

When the bullet is fired, the rotation sensor 111 generates a sine wave signal by the rotation of the bullet and the earth's magnetic field.

The signal processing circuit 112 receives a sine wave signal generated by the rotation sensor 111 and converts the sine wave signal into a square wave signal so as to enable digital counting.

The main control section 115 is equipped with a fuse operation algorithm (a kind of software program), the main control section 115, as shown in Figure 4, the function to control the overall operation of the fuse, the fire control before firing the bullet A function for transmitting the explosion condition data to the fire control apparatus 100 to check whether the explosion condition data charged from the device 100 is inserted (401), and blocking external unnecessary input such as noise after charging the fuse. External input blocking function 402, the function to store the explosion condition data divided into mode data 403 and time data 407, 410, square wave obtained through the signal processing circuit 112 after the launch of the bullet A function of measuring the number of revolutions and the rotation time of the bullet based on the signal (405), the function of measuring the flight time of the bullet (404), using the measured rotation speed and rotation time using the standard muzzle velocity A function of calculating an error between constraints and calculating a time correction factor according to a range based on the charged time data 406, and correcting the charged time data by using the calculated error and the calculated time correction coefficient. Function 411, Detonation determination function 408 for outputting the detonation signal by determining the explosion condition according to the operation mode of the fuse specified in the mode data, Departing from the safety distance from the firing point to secure a safety distance when firing The detonation function is limited so as not to explode before, and the safety detonation function 409 is performed so that the detonation function is performed only when it is out of the safety distance. Here, a microprocessor may be used as the main controller 115. In addition, the main controller 115 includes a counter and a timer for measuring the number of revolutions and the rotation time of the shot bullet, respectively, based on the square wave pulse signal output from the signal processing circuit 112.

The external input blocking circuit 113 blocks an input of an external unnecessary signal such as noise by an external input blocking function of the main controller 115.

The power / signal separation circuit 114 separates the charging signal and the power by supplying the power input from the fire control apparatus 100 in only one direction.

The power charging circuit 117 receives the power separated by the power / signal separation circuit 114 and charges the capacitor to supply power of the fuse before firing of the bullet.

The launch / impact detection circuit 118 detects the launch time of the bullet and the impact point during flight and outputs the launch and shock signals to the main control unit 115.

The detonator circuit 119 transmits the energy charged in the detonator capacitor to the detonator 130 by the detonator signal output from the main controller 115 so that the detonator 130 is detonated by the energy. do.

The safety loading circuit 116 includes a logic circuit, and the detonation signal is output only when the detonation signal output from the main control unit 115 and the signal generated when the safety distance is released after firing the bullet are simultaneously input. By allowing the detonator 119 to be input to the detonator circuit 119, the detonator does not explode even if an detonator signal is generated before the safety distance is released after the detonator fires.

Here, preferably, the power supply circuit 117 may further include an internal power supply element 120 that is activated when the bullet is fired to supply power to the fuse circuit 110.

In addition, as shown in (a) and (b) of FIG. 2, the rotation sensor 111 has a high permeability material (for example, permalloy) to focus the magnetism present in the air efficiently. A rod-shaped core 201, a pair of support members 202 coupled to both ends of the core 201 to support the core 201, and a pair of support members 202 It is composed of a coil 203 wound around the outer peripheral surface of the body 201 of the core 201 and generating a sinusoidal signal according to the rotation of the bullet. In FIG. 2, reference numeral 202h denotes a core hole into which a core is inserted, 202c denotes a coil hole from which a coil end is drawn out, 202t denotes an electrical terminal, and 204 denotes an insulator.

In addition, the signal processing circuit 112, as shown in Figure 3, to remove the noise contained in the sinusoidal signal generated by the rotation sensor 111, a predetermined frequency band (for example, less than a few kHz A low pass filter 301 for passing only a signal of the signal, a signal amplification circuit 302 for amplifying a signal passing through the low pass filter 301 to a predetermined size, and a signal amplifying circuit And an output circuit 303 which receives the signal amplified by 302 and converts it into a square wave signal that enables digital counting (for example, one count per revolution).

In addition, the operation mode of the fuse specified in the mode data and controlled by the main control unit 115 may include a flight time measured by an internal timer (not shown) of the main control unit 115 and the time of flight of the corrected time data. An explosive mode that explodes when matched; An impact mode in which a bullet in flight will explode when an impact is detected by the launch / shock detection circuit 118; The bullet in flight is classified into a shock delay mode that explodes when a predetermined delay time elapses after a shock is detected by the launch / shock detection circuit 118.

In addition, when the explosion is not made by the operation mode, the main controller 115 determines whether the flight time of the bullet coincides with a preset self-detonation time, and if so, outputs the detonation signal so that the bullet explodes by itself. do. This series of operations is automatically performed by a fuse operation algorithm (a kind of software program) mounted on the main controller 115.

In addition, although not shown in detail in the drawing, the launch / shock detection circuit 118 has a structure in which a launch switch and an impact switch are not separated from each other, and the launch and impact can be detected together in one apparatus. Is done.

Then, the operation and control method of the muzzle velocity correction fuse according to the present invention having the above configuration will be described with reference to FIG.

5 is a flowchart illustrating an execution process of a control method of a muzzle velocity correction fuse according to the present invention.

Referring to Figure 5, according to the control method of the muzzle velocity correction type fuse according to the present invention, first, before the launch of the bullet, when the power is supplied from the fire control device 100 to charge the power charging circuit 117, The main controller 115 is initialized to operate.

When the initialization is completed, after transmitting the explosion condition data charged from the fire control device 100 from the main control unit 115 to the fire control device 100, the noise by the external input blocking circuit 113 Block unnecessary input of an external unnecessary signal such as (step S501).

Thereafter, the explosion condition data charged from the fire control apparatus 100 is divided into time data and mode data by the main controller 115 and stored (step S502). Here, the time data is the flight time calculated based on the flight trajectory at the standard muzzle velocity for the air explosive target range, and the mode data is the operation of the fuse so that the fuse explodes in the air explosion, impact explosion, impact delay explosion, etc. Is the specified data.

When the shot is fired, the firing / impact detection circuit 118 detects the firing time and outputs a firing signal to the main control unit 115 (step S503). That is, the launch / shock detection circuit 118 checks whether the launch switch is ON and outputs a launch signal to the main control unit 115 when the launch switch is turned on.

When the firing signal is input to the main control unit 115 in this way, the main control unit 115 measures the rotation speed and the rotation time of the bullet based on the square wave signal from the signal processing circuit 112 (step S504). That is, since the square wave pulse signal is output one pulse for one revolution of the bullet, the main control unit 115 counts and measures the pulse input from the signal processing circuit 112 by the built-in counter, the pulse is input By periodically storing the time of the point of time is to measure the rotation time for each rotational speed and cumulative rotational speed by the built-in timer.

When the rotation speed and the rotation time are measured by the above, the error between the standard muzzle velocity and the actual muzzle velocity is calculated by the main control unit using the measured rotation speed and the rotation time, and based on the loaded time data, The time correction factor is calculated (step S505). That is, when the rotation time measurement for a certain number of revolutions is completed, by comparing the rotation time for the actual number of sprockets with the rotation time for the number of revolutions at the standard speed of the sprocket and calculates the error between the standard and the actual speed of the ball do. Then, the target range is calculated using the time data initially charged, and the time correction coefficient for the target range is calculated.

Thereafter, the stored time data is corrected by the main controller 115 using the calculated time difference between the standard and the actual ball speed and the calculated time correction coefficient (step S506). Next, the main control unit 115 determines whether the shot has escaped the safe distance (step S507). If the safe distance has been escaped, the operation mode specified in the mode data is checked (step S508). If the confirmed operation mode is the aerial explosion mode AB, the time data corrected in step S506 by the main control unit 115 is compared with the flight time of the bullet (step S509). As a result of the comparison, if the corrected time data coincides with the flight time of the bullet, it is controlled to explode in the air or, if not, to explode when the preset self-detonation time elapses (step S510).

In addition, if the operation mode confirmed in the step S508 is the shock mode (PD), by the launch / shock detection circuit 118 detects whether the impact (step S511), if the shock is detected shock explosion, or not shock explosion In the case where the preset self-destructing time has elapsed, the control is performed to self-destruct (step S512).

In addition, if the operation mode confirmed in the step S508 is the impact delay mode (PDD), the launch / impact detection circuit 118 detects the impact (step S513), if the shock is detected, the predetermined delay time has elapsed In step S514, the controller performs control to expel the shock after a predetermined time delay, or to self-detonate when the preset self-detonation time elapses when the shock delay does not explode (step S515). Here, the description will be further described with respect to the control of the explosion according to each operation mode as described above.

That is, when the explosion condition in the operation mode identified in step S508 is satisfied, the main control unit 115 outputs an initiator signal. The detonation signal is input to the detonation circuit 119 via the safety loading circuit 116, the detonation circuit 119 operates the detonator 130 when the detonation signal is input, the bullet is the It will explode by operation. Therefore, the main control unit 115 controls the explosion of the bullet by using the detonation signal.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Accordingly, the true scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of the same should be construed as being included in the scope of the present invention.

1 is a view schematically showing the overall configuration of a muzzle velocity correction fuse according to the present invention.

Figure 2 is a schematic view showing the structure of a rotation sensor in the muzzle velocity correction fuse according to the present invention.

3 is a view showing the configuration of a signal processing circuit in the muzzle velocity correction fuse according to the present invention.

Figure 4 is a view showing the various functions of the main control portion in the muzzle velocity correction fuse according to the present invention.

Figure 5 is a flow chart showing the execution of the control method of the muzzle velocity correction fuse according to the invention.

<Explanation of symbols for the main parts of the drawings>

100 ... Fire Control System 110 ... Fuse Circuit

111 ... rotation sensor 112 ... signal processing circuit

113 ... external input disconnect circuit 114 ... power / signal separation circuit

115 Main control unit 116 Safety load circuit

117 Power supply circuit 118 Fire / shock detection circuit

119 ... Detonator circuit 120 ... Internal power supply element

130 Detonator 201 Core

202 Support member 203 Coil

202h ... core hole 202c ... coil hole

202t ... Electrical terminal 204 ... Insulator

301 Low pass circuit 302 Signal amplification circuit

303 ... output circuit

Claims (10)

A fuse circuit for outputting a corresponding detonation signal according to the explosion condition data input from the fire control device, and an initiator for initiating an explosion in accordance with the detonation signal from the fuse circuit; The fuse circuit, When the bullet is fired, the rotation detection sensor for generating a sine wave signal by the rotation of the bullet and the earth magnetic field; A signal processing circuit for receiving a sine wave signal generated by the rotation sensor and converting the sine wave signal into a square wave signal to enable digital counting; A fuse operation algorithm (a kind of software program) is mounted, and a function of controlling the overall operation of the fuse, and the explosion control data is controlled by the explosion control to check whether the explosion condition data loaded from the fire control device before firing the bullet is loaded. A function of transmitting to a device, an external input blocking function for blocking external unnecessary input such as noise after the fuse is inserted, a function of storing the explosion condition data into mode data and time data, and the signal processing circuit after firing the bullet Based on the square wave signal obtained through the function to measure the number of revolutions and the rotation time of the bullet, the flight time of the bullet, the calculated error between the standard and actual muzzle velocity using the measured rotation and rotation time And calculating the time correction factor according to the range based on the loaded time data. A function of correcting the charged time data using the calculated error and the calculated time correction coefficient, a detonation determination function for outputting the detonation signal by judging the explosion condition according to the operation mode of the fuse specified in the mode data, and shot firing A main control unit for restraining the detonation function so as not to explode before escaping the safe distance from the launching point in order to secure a safety distance at the time of launching, and performing the safety loading function such that the detonation function is performed only when the safety distance is out of the safety distance; An external input blocking circuit for blocking input of an external unnecessary signal such as noise by an external input blocking function of the main controller; A power / signal separation circuit for separating power from a charging signal by supplying power input from the fire control device in only one direction; A power charging circuit which receives the power separated by the power / signal separation circuit and charges the capacitor to supply power of the fuse before firing of the bullet; A firing / impact detection circuit for detecting a launch point of the bullet and an impact point during flight and outputting a launch and shock signal to the main controller; A detonator circuit which delivers the energy charged in the detonation capacitor to the detonator by the detonator signal output from the main controller so that the detonator is detonated by the energy; A logic circuit is provided, and the detonation signal is inputted to the detonation circuit only when the detonation signal output from the main control unit and a signal generated when the safety distance is released after the shot is released are simultaneously input. A safety loading circuit to prevent the bombs from exploding even if an explosion signal occurs before the safety distance is released after the launch; And Apart from the power charging circuit, the bullet speed correction type fuse, characterized in that it comprises an internal power supply that is activated when the bullet is fired to supply power to the fuse circuit. delete The method of claim 1, The rotation sensor includes a rod-shaped core made of a material having a high permeability, and a pair of support members coupled to both ends of the core to support the core efficiently to focus the magnetism present in the air, and a pair A spherical speed correction fuse, characterized in that the coil is wound around the outer peripheral surface of the body between the support members of the core to generate a sine wave signal according to the rotation of the bullet. The method of claim 1, The signal processing circuit may include a low pass filter that passes only signals of a predetermined frequency band to remove noise included in the sine wave signal generated by the rotation sensor, and a signal that passes through the low pass filter. A muzzle velocity correction fuse comprising: a signal amplifier circuit for amplifying a predetermined size and an output circuit for receiving a signal amplified by the signal amplifier circuit and converting the signal into a square wave signal for digital counting and outputting the signal; . The method of claim 1, The operation mode of the fuse specified in the mode data and controlled by the main control unit includes an air explosive mode which explodes when the flight time measured by the internal timer of the main control unit matches the time of flight of the corrected time data; An impact mode in which a bullet in flight will explode when an impact is detected by the firing / impact detection circuit; The bullet in flight speed correction type, characterized in that divided into the impact delay mode that explodes when a predetermined delay time elapses after the impact is detected by the firing / impact detection circuit. The method of claim 5, If the explosion is not made by the operation mode, the main control unit determines whether the flight time of the bullet coincides with the preset self-destructing time, and if it matches, the bullet speed correction type fuse characterized in that the bomb. The method of claim 1, The firing / impact detection circuit is not separated from the firing switch and the impact switch, respectively, the muzzle velocity correction type fuse, characterized in that the structure is made of a structure that can detect the firing and impact together in a single mechanism. It outputs the corresponding detonation signal according to the explosion condition data received from the fire control system, and includes rotation detection sensor, signal processing circuit, main control part, external input blocking circuit, power / signal separation circuit, power charging circuit, and fire / shock detection. A control method for a muzzle velocity correcting fuse comprising a fuse circuit including a circuit, a safety loading circuit, an explosion circuit, an internal power supply element, and an initiator for initiating an explosion in accordance with an explosion signal from the fuse circuit. a) initializing the main controller to operate when power is supplied from the fire control device and the power charging circuit is charged before the shot of the bullet; b) when the initialization is completed, the explosion condition data charged from the fire control device is transmitted from the main controller to the fire control device, and then the external input blocking circuit cuts off the input of an external unnecessary signal such as noise. Making; c) storing explosion condition data charged from the fire control apparatus into time data and mode data by the main controller; d) when the shot is fired, detecting a launch time by the launch / impact detection circuit and outputting a launch signal to the main controller; e) measuring, by the main control unit, the number of revolutions and the rotation time of the bullet based on the square wave signal from the signal processing circuit according to the input of the firing signal; f) calculating an error between the standard muzzle velocity and the actual muzzle velocity by the main control unit using the measured rotation speed and the rotation time, and calculating a time correction coefficient according to the range based on the loaded time data; g) correcting the stored time data by the main controller using the calculated time difference between the standard and the actual ball speed and the calculated time correction coefficient; h) determining whether the shot deviated from the safety distance by the main control unit, and if the safety distance deviated, checking the operation mode specified in the mode data; i) comparing the time data corrected in step g) with the flight time of the bullet, by the main control unit, if the identified operation mode is an air explosion mode; j) if the corrected time data and the flight time of the match coincides with the result of the comparison, or if the explosion does not explode; The step before step d) is performed by receiving power from the power charging circuit, and the step after step d) is performed by receiving power from the internal power device provided separately from the power charging circuit. Control method of corrected fuse. The method of claim 8, Detecting an impact by the firing / impact detection circuit if the operation mode identified in step h) is an impact mode; And when the shock is detected, exploding the shock or, if the shock is not exploded, self-detonating when a predetermined self-detonation time has elapsed. The method of claim 8, If the operation mode identified in step h) is a shock delay mode, detecting a shock by the launch / shock detection circuit; Delaying a predetermined time when a shock is detected; And a step of causing the self-detonation when a predetermined self-detonation time elapses when the shock delayed explosion or the impact delayed explosion has not elapsed after a predetermined time delay.

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