KR20130058460A - Power storage circuit and firing circuit of fuze - Google Patents

Abstract

PURPOSE: A power storage device for a fuse and a detonator circuit are provided to reduce the noise inside the fuse by blocking the power in a target penetrating process and a target colliding and to prevent malfunction of the fuse. CONSTITUTION: A detonator comprises a signal process circuit(250), a detonator circuit(270), and a power storage device circuit. The signal process circuit senses a target colliding and a target and generates a target detecting signal. The detonator circuit stores the power of a fuse and ignites a detonating pipe by applying the power to a detonator according to the target detecting signal. The power storage device circuit discharges until colliding target using the power of the fuse and supplies constant power to the signal process circuit when charging voltage reaches to the threshold value after colliding the target. [Reference numerals] (211) DC/DC converter; (220) Signal processing circuit; (221) One-chip controller; (222) Initializing circuit; (230) Opto-coupler circuit; (240) Detonator circuit unit; (241) Detonation energy charging circuit; (242) Detonation energy storage circuit; (250) Power storage device circuit(for a signal processor); (270) Power storage device circuit(for a detonation circuit); (AA,DD) Fuse power; (BB) Ground; (CC) Target detecting signal; (EE) Detonation tube

Description

POWER STORAGE CIRCUIT AND FIRING CIRCUIT OF FUZE}

The present invention relates to a fuse power storage device and detonator circuit design designed for application to penetration fuses for missiles.

The details of power supply and detonator for penetration fuse applied in developed countries are not known. In some advanced countries, it is known that thermal cell is applied as a fuse power source for use after solid target collision.

On the other hand, the detonator stores energy in the detonator capacitor through the detonation energy charging circuit from the fuse power supply and receives the fire signal outputted from the fuse at the time of explosion, thereby receiving the SCR (silicon-controlled rectifier) element of the detonator. The device is turned on to apply energy stored in the detonation capacitor to the detonator to ignite the detonator.

Figure 1 shows a block diagram (US Patent, US 7,478,595) of the conventional time fuse detonator 100. When a fire signal is input to the gate terminal 122 of the SCR 120 while the energy is charged in the detonation capacitor 110, the SCR 120 is turned on and the detonation capacitor 110 is turned on. The stored energy is transferred to the detonator via SCR 120 to ignite the detonator. The detonator 100 of FIG. 1 uses the SCR 120 to ignite the detonator, which introduces noise of less than a few microseconds (μsec) in width to the gate terminal 122 of the SCR 120. There is a disadvantage that fuse malfunction occurs.

2 (a) to 2 (c) show a waveform diagram for explaining the operation concept of the conventional fuse detonator, Figure 2 (d) is a waveform for explaining the operation concept of the fuse detonator according to the present invention Is shown.

As shown in FIG. 2A, a fire signal is charged in FIG. 2B in a state in which a fuse power is charged in C1 of the initiator capacitor 110 in FIG. 2A and a fuse power supply in FIG. 2C. However, when noise of less than a few microseconds (μsec) in width is introduced, the SCR 120 of the detonator 100 is operated so that the energy charged in C1 of the detonator capacitor 110 is detonated in FIG. Discharge through the SCR 120 like the voltage waveform has the disadvantage that the detonator ignited incorrectly.

This phenomenon occurs because of the characteristics of the SCR (120) device. That is, when a pulse such as noise of about tens of nanoseconds (nsec) of pulse width is applied to the gate terminal 122, the SCR 120 is turned on to charge the detonation capacitor 110. It is not possible to turn off the SCR 120 until all the energy has been discharged. For this reason, the detonator 100 to which the SCR 120 is applied has a disadvantage of being vulnerable to noise.

The present invention is to solve the above problems, by providing a simple fuse power storage circuit using an ultra-capacitor, to activate the thermal cell as well as the thermal cell in order to supply itself the power required by the penetrating bomb target penetration process. It is to overcome the constraint that additional circuitry is needed.

In addition, the present invention provides a detonator circuit that operates safely even when the power is cut off and resistant to noise, so that the infiltration fuse may enter noise into the fuse due to the power interruption during the target collision and the target penetration process, and thereby the fuse malfunction. It is to reduce the possibility of.

Detonator according to an embodiment of the present invention, the signal processing circuit unit for generating a target detection signal by detecting a target collision and target; A detonator circuit unit for storing fuse power and igniting the detonator by applying the stored fuse power to the detonator in accordance with the target detection signal; And a power storage device circuit unit which charges using the fuse power until the target collision, and supplies constant power to the signal processing circuit until the charging voltage reaches a threshold value after the target collision. do.

On the other hand, the detonator according to another embodiment of the present invention, the signal processing circuit unit for generating a target detection signal by detecting a target collision and the target; A detonator circuit unit for storing fuse power and igniting the detonator by applying the stored fuse power to the detonator in accordance with the target detection signal; A coupler circuit unit for transmitting the target detection signal generated in the signal processing circuit unit to the detonator circuit unit in a state where power is applied; And a noise blocking circuit unit which cuts off the power supplied to the coupler circuit unit when the magnitude of the power applied to the signal processing circuit unit is lower than a threshold value.

On the other hand, the detonator according to another embodiment of the present invention, the signal processing circuit unit for generating a target detection signal by detecting a target collision and the target; And a detonator circuit unit configured to store fuse power and apply the stored fuse power to the detonator in accordance with the target detection signal to ignite the detonator. The detonator circuit unit is applied to an input terminal of the detonator circuit unit. And a switching device that remains turned on only during the pulse width.

The present invention devises and applies the detonator circuit composed of two kinds of power storage device circuit, power ON / OFF noise blocking circuit, and MOSFET in addition to the existing fuse circuit, so that even though the external power is cut off from the moment of target collision, target penetration is achieved. In addition, the target detection function of the fuse is normally operated by supplying the power required by the fuse by itself, and also the reliability of the penetration fuse is greatly increased by preventing the fuse malfunction caused by the power on / off and the noise inflow. Can be improved.

1 is a block diagram of a conventional fuse (time fuse) detonator.
2 is a conceptual view of operation of the detonator according to the prior art and the present invention.
3 is a block diagram of a fuse power storage device and detonator according to the present invention.
Figure 4 is a detailed block diagram of the fuse power storage device and the detonator according to the present invention.
5 is a conceptual diagram of the operation of the fuse power storage device according to the present invention.
6 is a conceptual view illustrating the operation of a power on / off noise blocking circuit and a detonator according to the present invention.

The present invention was devised to solve the disadvantages of the conventional fuse power supply device and the detonator. In the conventional fuse power supply and detonator, first, the fuse does not operate when the fuse power is cut off. Second, the fuse power is turned off / on while the energy is stored in the detonator capacitor of the detonator. If chattering occurs as a cause, the detonator will operate, causing fuse failure. Third, a fuse malfunction may occur when noise of less than a microsecond (μsec) in pulse width flows into the gate terminal of the SCR while energy is stored in the initiator capacitor of the initiator.

Therefore, in order to solve the above problems, the present invention provides a detonator circuit composed of two kinds of power storage circuits, a power on / off noise blocking circuit, and a metal oxide semiconductor field effect transistor (MOSFET) element. Devised.

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

3 is a block diagram of a fuse power storage device and detonator according to the present invention, Figure 4 is a detailed block diagram of a fuse power storage device and detonator according to the present invention.

The fuse power storage device and the detonator 200 according to the present invention include two DC / DC converters 211 and 212, a signal processing circuit unit 220, an optocoupler circuit 230, a detonator circuit unit 240, and power storage. Device circuit (for signal processing circuit section) 250, power supply ON / OFF noise blocking circuit 260, and power storage device circuit (for initiator circuit section) 270.

The DC / DC converter 211 separates fuse power from induction coal power to block various noises introduced into the fuse from the outside of the fuse. In addition, the DC / DC converter 212 generates various power sources required by the signal processing circuit section.

The signal processing circuit unit 220 includes a one chip controller 221, an initialization circuit 222, and a buffer circuit 223. The one chip controller 221 detects a target collision and a target. The initialization circuit 222 initializes the one-chip controller 221 and the one-chip controller 221 to prevent a malfunction of the one-chip controller 221 that may occur when the power applied to the one-chip controller 221 is lower than a preset voltage. Initializes the role. The buffer circuit 223 protects the one chip controller 221 and drives the optocoupler circuit 230.

The optocoupler circuit 230 performs power separation for preventing noise from entering between the signal processing circuit unit 220 and the initiator circuit unit 240.

The detonator circuit unit 240 includes an detonation energy charging circuit 241, an detonation energy storage circuit 242, and a discharge circuit 243. The detonation energy charging circuit 241 operates when the missile is close to the target, and serves to charge the detonation capacitor with energy required for detonation of the detonation tube.

On the other hand, when the penetrating coal collides with the target, the power supplied to the fuse from the missile is cut off, and the power storage device (for the signal processor) 250 of FIGS. do. The power storage device 250 (for the signal processing unit), for example, uses a large-capacity ultracapacitor of 2F to store the power required in the fuse, during the missile flight, the missile power is stored in the ultracapacitor When the missile hits the target, the fuse uses the energy stored in the ultracapacitor to operate.

5 is a waveform diagram illustrating an operation concept of a fuse power storage device according to the present invention. In FIG. 5 (d), the fuse power source is a power source supplied from the missile to the fuse, and this power source is cut off at the target collision. In FIG. 5E, the charging voltage is a voltage charged in the ultracapacitor, and the fuse power is stored during the missile flight, and after the target collision, the fuse is discharged by using the charged energy. In FIG. 5E, the charging voltage takes more than a few minutes to charge up to a predetermined voltage after the induction coal power is applied, and thus, the ultracapacitor output cannot be directly used as a power source of the signal processor 220.

Since the power of the signal processor 220 must be stably supplied from the moment when the guided coal power is applied to the fuse until the target collision is performed to perform the target detection, the power storage circuit 250 has two power supply circuits as shown in FIG. It consists of a diode, resistor, ultracapacitor, and DC / DC converter (MAX710).

In FIG. 5 (f), the input power MAX710 is identical to the fuse power when the fuse power is applied, but is output the same as the ultra capacitor output voltage after the target collision. The MAX 710 applied to the power storage circuit 250 of FIG. 4 is a DC / DC converter, and when the input voltage is input in the range of 2V to 11V, the MAX 710 always outputs 5V. Therefore, in FIG. 5G, since the output power MAX710 always outputs a constant power immediately after the fuse power is applied and the charging voltage of the ultracapacitor is discharged to about 2V after the target collision, the signal processor 220 even after the target collision. ) Can stably detect the target.

Again, referring to FIGS. 3 and 4, the power ON / OFF noise cut-off circuit 260 is a phenomenon in which the fuse power is turned off / on in the state where the detonation energy is charged in the detonation capacitor, or the shaking phenomenon occurs due to noise in the fuse power. If it occurs, the detonator is activated and fuse malfunction occurs. This circuit is designed to solve this problem. The power ON / OFF noise blocking circuit 260 controls the power applied to the optocoupler circuit 230 by using the output signal of the initialization circuit 222. The initialization circuit 222 is a circuit for monitoring the voltage level of the power applied to the one-chip controller 221 as described above, and serves to initialize the one-chip controller 221 when the power supply voltage is lower than a predetermined voltage. do.

6 is a conceptual diagram illustrating an operation of a power on / off noise blocking circuit and a detonator according to the present invention. As shown in FIG. 6, when the fuse power is ON / OFF in FIG. 6H, power ON / OFF noise is generated at the fire signal terminal in FIG. 6I. This noise occurs when the power supply voltage in the initialization circuit 222 falls below a certain magnitude.

In FIG. 6J, a reset signal is used to initialize the one chip controller 221 to prevent a malfunction of the one chip controller 221 when the power applied to the one chip controller 221 is lower than a preset voltage. . Therefore, when the reset signal is HIGH, the time when the one-chip controller 221 operates stably and when the reset signal is low, the time when the one-chip controller 221 operates unstable. When controlling the signal applied to the opto-coupler circuit 230 using the fuse can prevent the fuse malfunction due to fuse ON / OFF noise.

Accordingly, the transistors Q1 and Q2 of FIG. 4 control the power applied to the optocoupler 230 using the reset signal in FIG. 6 (j). When the power supply of the one-chip controller 221 falls below a predetermined size, a low state signal is generated in the initialization circuit 222 as shown in the reset signal of FIG. 6 (j), which causes the transistor Q1. Is turned off and the power of the optocoupler circuit 230 is cut off in FIG. In the state in which the optocoupler circuit 230 is powered off, even if power ON / OFF noise is generated in the Fire signal in FIG. 6 (i) and applied to the transistor Q2, the transistor Q1 is cut off and thus FIG. In (k), the power of the optocoupler circuit 230 is not applied.

As a result, the fire signal in FIG. 6 (i) is not applied to the Fire signal (optocoupler input) in FIG. 6 (l), and thus the detonator is not operated to prevent fuse malfunction. do. If the target detection signal (Fire signal) is output in (i) of FIG. 6 while the fuse power is stabilized, the fire signal in FIG. 6 (l) and the detonation capacitor voltage waveform in (m) of FIG. It is output as well and the ignition tube is ignited so that the fuse operates normally.

On the other hand, when the fuse power applied to the detonator is turned off / on while the detonator capacitor is charged with detonation energy, a noise pulse occurs due to a malfunction of the optocoupler circuit 230, and the noise is a MOSFET of the discharge circuit 243. Applied to the input terminal causing fuse malfunction. To prevent this, the power storage device and the detonator 200 further include the power storage device circuit (for the detonator circuit) 270 of FIGS. 3 and 4. When designing the power storage device circuit (for the detonation circuit) 270, it is important to select the value of the capacitor C4. In FIG. 4, the charging energy of the C4 is naturally discharged rather than the time when the charging energy of the value C5 is naturally discharged. It is desirable to select the value of C4 so that the time is longer.

Meanwhile, in the conventional fuse detonator 100 of FIG. 1, the detonator circuit is designed using the SCR 120. In the present invention, as shown in FIGS. 3 and 4, the switching element of the detonator circuit unit 240 is shown. The detonator circuit was designed using MOSFET. SCR 120 is turned on even if a very short pulse of several tens of nanoseconds (nsec) wide is applied to the input terminal and is kept on (it is turned off only when a current less than a holding current is applied to SCR 120). Because of this, there is a drawback that fuse malfunction occurs even by very short noise inflow.

In contrast, the detonator circuit 240 using the MOSFET applied as the switching element in the present invention has an advantage that fuse operation does not occur even when a pulse width of several microseconds (μsec) is applied. This is because the MOSFET is only turned on for the pulse width applied to the input. That is, when a short pulse is applied to the input terminal of the MOSFET, the MOSFET is turned on as much as the applied pulse width, and the energy stored in the initiator capacitor is discharged and applied to the initiator tube, but the energy tube is too small to ignite the initiator tube. Fuse malfunctions do not occur. Fire tube ignition requires a Fire signal of several tens of microseconds or more to be applied to the MOSFET input.

As shown in (c) of FIG. 2, the detonator 100 using the SCR 120 causes a fuse malfunction due to noise having a pulse width of several microseconds (μsec). The used detonator 200 does not cause fuse malfunction due to noise having a pulse width of several microseconds (μsec).

The present invention has been devised to solve the above problems for the application of penetration fuse, the power storage device in the existing fuse circuit consisting of the signal processing circuit 220, DC / DC converters 211 and 212, detonator circuit 240, etc. Circuit (for signal processing) 250, power storage circuit (for amplification circuit) 270, power on / off noise blocking circuit 260, optocoupler circuit 230, and switching element to MOSFET instead of SCR. A method of adding the configured initiator circuit is proposed.

As those skilled in the art would realize, the described embodiments may be modified in various ways without departing from the spirit or essential characteristics of the present invention. Therefore, the above-described embodiments are to be understood as illustrative in all respects and not as restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

211, 212: DC / DC converter 221: one-chip controller
222: initialization circuit 223: buffer circuit
230: optocoupler circuit 241: detonation energy charging circuit
242: detonation energy storage circuit 243: discharge circuit
250: power storage circuit (for signal processing section) 260: power on / off noise blocking circuit
270: power storage circuit (for detonation circuit)

Claims (11)

A signal processing circuit unit for detecting a target collision and a target and generating a target detection signal;
A detonator circuit unit for storing fuse power and igniting the detonator by applying the stored fuse power to the detonator in accordance with the target detection signal; And
And a power storage device circuit unit which charges using the fuse power until the target collision, and supplies constant power to the signal processing circuit unit until the charging voltage reaches a threshold value after the target collision. The power storage device of claim 1,
An ultracapacitor charged with the fuse power until the target collision;
And a DC / DC converter for supplying constant power to the signal processing circuit until the charging voltage reaches a threshold value after the target collision. The power storage device of claim 2,
A first diode for applying the fuse power to an input terminal of the DC / DC converter; And
And a second diode for applying the power of the ultra capacitor to the input terminal of the DC / DC converter. A signal processing circuit unit for detecting a target collision and a target and generating a target detection signal;
A detonator circuit unit for storing fuse power and igniting the detonator by applying the stored fuse power to the detonator in accordance with the target detection signal;
A coupler circuit unit for transmitting the target detection signal generated in the signal processing circuit unit to the detonator circuit unit in a state where power is applied; And
And a noise blocking circuit unit which cuts off the power supplied to the coupler circuit unit when the magnitude of the power applied to the signal processing circuit unit is lower than a threshold value. The method of claim 4, wherein the signal processing circuit unit,
A one-chip controller for detecting the target collision and a target;
An initialization circuit for initializing the one-chip controller when the magnitude of power applied to the one-chip controller is lower than a threshold value; And
And a buffer circuit to protect the one-chip controller and to drive the coupler circuit. The method of claim 5, wherein the noise blocking circuit unit,
And the power supply to the coupler circuit is cut off by using the output signal of the initialization circuit unit when the magnitude of the power applied to the one-chip controller is lower than a threshold value. The method of claim 6, wherein the noise blocking circuit unit,
A first transistor for transmitting the target detection signal received from the buffer circuit to the coupler circuit; And
And a second transistor which cuts off power applied to the coupler circuit in response to an output signal of the initialization circuit unit when the magnitude of power applied to the one-chip controller is lower than a threshold value. The apparatus of claim 4, further comprising a power storage device circuit unit configured to store the fuse power and supply the fuse power to the detonator circuit so that a noise pulse is not generated by the coupler circuit unit when the fuse power is lower than a threshold value. Detonator, characterized in that. The power storage device of claim 8, wherein
And a capacitor having a longer natural discharge time than the capacitor of the initiator circuit portion. A signal processing circuit unit for detecting a target collision and a target and generating a target detection signal; And
A detonator circuit unit for storing fuse power and applying the stored fuse power to the detonator in accordance with the target detection signal to ignite the detonator;
The detonator circuit section,
And a switching element which maintains a turn-on state only for a pulse width applied to an input terminal of the initiator circuit portion. The method of claim 10, wherein the switching device,
And a metal oxide semiconductor field effect transistor (MOSFET).

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