External circuit for controlling azimuth angle of artillery for forbidding shooting

Abstract

The utility model discloses an external circuit for controlling gun azimuth angle firing forbidding, which comprises a main control system circuit, and a port J3, a firing area storage circuit and a firing control circuit which are connected with the main control system circuit, and a weapon equipment system is connected with the port J3 and the firing control circuit. According to the external circuit for controlling the azimuth angle of the artillery to forbid firing, the firing circuit of the artillery can be automatically switched on and switched off according to the setting requirement of a firing area, and it is ensured that the artillery system does not emit mistakenly in the forbid firing state.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit design, in particular to an external circuit for controlling the azimuth firing prohibition of a gun. Background Art

[0002] In order to prevent accidental injuries when firing, a no-fire zone needs to be set. At present, a certain type of self-propelled anti-aircraft gun of our army only has the no-fire function of elevation, but not the no-fire function of azimuth. It is impossible to realize the no-aiming and no-fire control functions of the self-propelled anti-aircraft gun in the designated no-fire azimuth. Whether the gun enters the no-fire zone and whether it can fire depends on the judgment and control of the operator. Since the self-propelled anti-aircraft gun operators generally operate in a confined space with a very limited field of view, the operators can basically not see the ground reference objects outside the turret, so they cannot accurately judge the actual firing direction of the gun, and are prone to accidentally firing shells into the no-fire zone, which leads to shooting accidents.

[0003] At present, the artillery firing range control circuits that some troops have innovated are mostly executed by cutting off the artillery servo system circuits: once it is determined that the artillery has reached the firing boundary, the artillery servo circuit is forcibly cut off, and the servo system cuts off the artillery firing circuit through the interlocking function. This method can achieve firing range control, but once the servo circuit is cut off, it stops tracking the target, and the servo system must be restarted to capture the target again, which not only increases the operating burden of the gunner, but also easily misses the opportunity to fight. In addition, this method can only set one prohibited shooting area. Utility Model Content

[0004] The technical problem to be solved by the utility model is to solve the problem of controlling the emission angle without affecting the stable tracking of the follow-up circuit.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] An external circuit for controlling the azimuth firing ban of a gun, comprising a main control system circuit, and a port J3 connected to the main control system circuit, a firing range storage circuit and a firing control circuit;

[0007] And, the data acquisition port of the weapon equipment system is connected to port J3;

[0008] The shooting range storage circuit includes a storage chip U4, the main control system circuit includes a main controller, the sixth pin of the storage chip U4 is connected to the twenty-second pin of the main controller, and the fifth pin of the storage chip U4 is connected to the twenty-third pin of the main controller;

[0009] The launch control circuit includes port J4, port J5 and a relay; the foot firing cable of the weapon and equipment system is connected to port J4, the launch interface of the weapon and equipment system is connected to port J5, the two ends of the normally open auxiliary switch of the relay are respectively connected to port J4 and port J5, one end of the coil K1 of the relay is connected to the 28th pin of the main controller, and the other end is grounded.

[0010] In one embodiment of the present invention, the A0 port, the A1 port, the A2 port of the memory chip U4 and the fourth pin of the memory chip U4 are grounded; the eighth pin of the memory chip U4 is connected to the power supply.

[0011] In an embodiment of the present invention, the first pin of port J4 is connected to the first pin of port J5; and the two ends of the normally open auxiliary switch of the relay are respectively connected to the second pin of port J4 and the second pin of port J5.

[0012] In one embodiment of the present invention, the first to eighth pins of port J3 are connected to the first to eighth pins of the main controller respectively; the nineteenth to twenty-fourth pins of port J3 are connected to the twelfth to seventeenth pins of the main controller respectively.

[0013] In an embodiment of the present invention, the 37th, 39th to 41st pins of the port J3 are all connected to the 20th pin of the main controller and grounded.

[0014] In one embodiment of the present utility model, the main control system circuit includes a power supply circuit; the power supply circuit includes a switching power supply module U1, capacitors C1, C2, a unidirectional diode D1 and a power port J1;

[0015] Capacitors C1 and C2 are connected in parallel, and their two ends are respectively connected to the first lead and the third pin of the switching power supply module U1; the anode of the unidirectional diode D1 is connected to the first pin of the power port J1, and the cathode of the unidirectional diode D1 is connected to one end of the capacitor C1; the second pin of the power port J1 is connected to the other end of the capacitor C1.

[0016] In one embodiment of the present utility model, the power supply circuit includes a voltage stabilizing diode D2, an inductor L1, and capacitors C3 and C4;

[0017] The anode of the voltage stabilizing diode D2 is connected to the fifth pin of the switching power module U1, and the fifth pin of the switching power module U1 is grounded; the cathode of the voltage stabilizing diode D2 is connected to the second pin of the switching power module U1;

[0018] One end of the inductor L1 is connected to the cathode of the voltage zener diode D2, and the other end is connected to the capacitor C3;

[0019] One end of capacitor C3 is connected to inductor L1 and the fourth pin of switching power module U1, and the other end is connected to the fifth pin of switching power module U1; capacitor C4 is connected in parallel with capacitor C3, and the connection end of capacitor C4 and inductor L1 is also connected to the 40th pin of the main controller for power supply; the other end of capacitor C4 and the 20th pin of the main controller are connected to ground.

[0020] In one embodiment of the present utility model, the main control system circuit includes a reset circuit; the reset circuit includes a reset button SW1, a capacitor C100 and a resistor R100; one end of the reset button SW1 is connected to the positive electrode of the capacitor C100 and connected to a power supply, and the other end of the reset button SW1 is connected to the negative electrode of the capacitor C100, the resistor R100 and the ninth pin of the main controller; and the non-connected ends of the resistor R100 and the capacitor C100 are grounded.

[0021] In one embodiment of the utility model, the main control system circuit includes a crystal oscillator circuit; the crystal oscillator circuit includes a crystal oscillator Y1, a capacitor C101 and a capacitor C102; the two ends of the crystal oscillator Y1 are respectively connected to the nineteenth and eighteenth pins of the main controller; and one end of the capacitor C101 is grounded, and the other end is connected to the body oscillator Y1 and the nineteenth pin of the main controller; one end of the capacitor C102 is grounded, and the other end is connected to the body oscillator Y1 and the eighteenth pin of the main controller.

[0022] Compared with the prior art, the utility model has the following beneficial effects: fully considering the safety requirements of artillery operation, realizing the acquisition of artillery azimuth without affecting the original function of the artillery, and automatically judging whether the artillery can fire according to the setting of the prohibited shooting area: when the artillery is aimed at the prohibited shooting area, the artillery firing circuit is automatically cut off, and when the artillery leaves the prohibited shooting area, the artillery firing circuit is automatically connected, thereby achieving the purpose of "intelligent control, no shooting but no aiming". With this method, there is no need to cut off the follow-up circuit, and it does not affect the tracking and aiming of the gunner, so the operating burden of the gunner can be greatly reduced. Moreover, according to the actual battlefield, up to 5 prohibited shooting areas can be set. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of a main controller according to an embodiment of the present utility model.

[0024] Figure 2 Schematic diagram of a power supply circuit according to an embodiment of the present utility model.

[0025] Figure 3 The figure is a schematic diagram of a reset circuit and a crystal oscillator circuit according to an embodiment of the present utility model.

[0026] Figure 4 Schematic diagram of a crystal oscillator circuit according to an embodiment of the present utility model.

[0027] Figure 5 This is a schematic diagram of port J3 according to an embodiment of the present invention.

[0028] Figure 6 Schematic diagram of a shooting range storage circuit according to an embodiment of the utility model.

[0029] Figure 7 This is a schematic diagram of a transmission control circuit according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0030] In order to facilitate those skilled in the art to understand the technical solution of the utility model, the technical solution of the utility model is further explained in conjunction with the drawings in the specification.

[0031] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] See also Figures 1 to 7 As shown, the utility model provides an external circuit for controlling the azimuth firing ban of artillery, including a main control system circuit, and a port J3 connected to the main control system circuit, a firing range storage circuit and a firing control circuit, and a weapon equipment system is connected to the port J3 and the firing control circuit.

[0033] See also Figures 1 to 4 As shown, in one embodiment of the present utility model, the main control system circuit includes a main controller, a power supply circuit, a reset circuit and a crystal oscillator circuit.

[0034] In this embodiment, the main controller uses the MCS-51 series 80C52 single-chip microcomputer, which has an 8-bit central processing unit, 256 bytes of internal RAM, 8Kb program memory (ROM), 32 bidirectional input / output (I / O) ports, 3 16-bit timers / counters and 5 two-level interrupt structures, 1 UART full-duplex serial communication port, and an on-chip clock oscillation circuit. When designed, the pin VDD is connected to 5V and the VSS is grounded.

[0035] In this embodiment, the power circuit includes a switching power supply module U1, capacitors C1, C2, C3 and C4, a unidirectional diode D1, a power port J1, an inductor L1 and a voltage regulator diode D2.

[0036] Capacitors C1 and C2 are connected in parallel, and their two ends are respectively connected to the first lead and the third pin of the switching power supply module U1; and the anode of the unidirectional diode D1 is connected to the first pin of the power port J1, the cathode of the unidirectional diode D1 is connected to one end of the capacitor C1, and the second pin of the power port J1 is connected to the other end of the capacitor C1.

[0037] The anode of the Zener diode D2 is connected to the fifth pin of the switching power module U1, and the fifth pin of the switching power module U1 is grounded, the cathode of the Zener diode D2 is connected to the second pin of the switching power module U1, one end of the inductor L1 is connected to the cathode of the Zener diode D2, and the other end is connected to the capacitor C3, one end of the capacitor C3 is connected to the inductor L1 and the fourth pin of the switching power module U1, and the other end is connected to the fifth pin of the switching power module U1; the capacitor C4 is connected in parallel with the capacitor C3, and the connection end of the capacitor C4 and the inductor L1 is also connected to the 40th pin of the main controller for power supply; the other end of the capacitor C4 is connected to the 20th pin of the main controller and grounded.

[0038] In one embodiment of the utility model, the switching power supply module U1 adopts LM2596, which is a switching power supply regulator of a step-down power management monolithic integrated circuit, capable of outputting a driving current of 3A, and having good linear and load regulation characteristics. The fixed output versions are 3.3V, 5V, and 12V, and the adjustable version can output various voltages less than 37V. The switching power supply will interfere with other circuits when working. In this embodiment, the power supply board is designed for wiring separately and installed in isolation from the acquisition board. The power port J1 is used to obtain the working power from the weapon backup power output port, and generates a 5V working power supply after conversion by this circuit. When the switching power supply module U1 is designed, a unidirectional diode D1 is added to its input end, which can effectively prevent the circuit from burning due to the reverse connection of the positive and negative poles of the power input end. Once the positive and negative pins of the power input end are reversed, the power supply stops working.

[0039] In this embodiment, the reset circuit includes a reset button SW1, a capacitor C100 and a resistor R100. One end of the reset button SW1 is connected to the positive electrode of the capacitor C100 and connected to a power supply, the other end of the reset button SW1 is connected to the negative electrode of the capacitor C100, the resistor R100 and the ninth pin of the main controller, and the non-connected end of the resistor R100 and the capacitor C100 is grounded.

[0040] In one embodiment of the utility model, the capacitor C100 is selected to be 10uf, and the resistance value of the resistor R100 is 10K. After the system is powered on, as long as the rise time of the power supply does not exceed 1ms, automatic power-on reset can be achieved. After pressing the reset button SW1, the RST pin is at a high level. After releasing it, the VDD power supply charges the capacitor C100 through the resistor R100. The device parameter design can ensure that the high level time of the RST pin is greater than 24 oscillation cycles. In use, in order to facilitate the system reset operation, the reset button SW1 is designed as a double button in parallel, one on the circuit board, using an ordinary surface-mounted button, and the other is connected in parallel to the operation panel to facilitate the system reset.

[0041] In this embodiment, the crystal oscillator circuit includes a crystal oscillator Y1, a capacitor C101 and a capacitor C102. The two ends of the crystal oscillator Y1 are respectively connected to the 19th and 18th pins of the main controller; and one end of the capacitor C101 is grounded, and the other end is connected to the body oscillator Y1 and the 19th pin of the main controller. One end of the capacitor C102 is grounded, and the other end is connected to the body oscillator Y1 and the 18th pin of the main controller.

[0042] In one embodiment of the utility model, for the crystal oscillator circuit, a crystal oscillator Y1 is connected between the input terminal XTAL1 and the output terminal XTAL2 of the high-gain inverting amplifier inside 80C52, and capacitors C101 and C102 are added between the crystal oscillator Y1 pin and the ground to form an oscillation feedback circuit. The crystal oscillator Y1 of this design uses a 12MHz crystal oscillator. When designing the circuit board, the crystal oscillator Y1, capacitors C101 and C102 are placed as close as possible to the XTAL1 and XTAL2 pins of the 89C2051 chip to reduce the distributed capacitance and fully ensure the stability of the crystal oscillator.

[0043] See also Figure 1 and Figure 5 As shown, in one embodiment of the present invention, the first to eighth pins of the port J3 are respectively connected to the first to eighth pins of the main controller in sequence, and the nineteenth to twenty-fourth pins of the port J3 are respectively connected to the twelfth to seventeenth pins of the main controller in sequence. The thirty-seventh, thirty-ninth to forty-first pins of the port J3 are all connected to the twentieth pin of the main controller and grounded.

[0044] In this embodiment, since this design needs to collect the azimuth of a certain type of anti-aircraft gun, it is necessary to design a connection port J3 of the same model as the weapon system interface. The specific model of port J3 can be found in the weapon output interface. Since the 41-pin pins of the original equipment interface are not all used, only the pin connections related to the data collection of this design are drawn in the figure, and the unused pins can be left floating, such as the ninth pin and the thirty-eighth pin of port J3 are left floating.

[0045] See also Figure 1 and Figure 6 As shown, in one embodiment of the utility model, the shooting range storage circuit includes a storage chip U4, the sixth pin of the storage chip U4 is connected to the twenty-second pin of the main controller, and the fifth pin of the storage chip U4 is connected to the twenty-third pin of the main controller. The A0 port, the A1 port, the A2 port of the storage chip U4 and the fourth pin of the storage chip U4 are grounded, and the eighth pin of the storage chip U4 is connected to the power supply.

[0046] In this embodiment, the memory chip U4 adopts AT24C32, which has 4096*8 storage space (32KEEPROM) inside, and can be used to store 5 sets of azimuth and range data that need to be input before shooting. The working voltage range of AT24C32 is 1.8V-5.5V, and it can be erased and written 1000000 times internally. It adopts I2C serial bus, and the clock rate is 400KHz (5V). The same bus allows 8 chips to be plugged in externally, and uses A2, A1, and A0 for address recognition. It has write protection and hardware data protection functions, and pin 7 provides hardware write protection.

[0047] See also Figure 1 and Figure 7 As shown, in one embodiment of the utility model, the launch control circuit includes port J4, port J5 and a relay; the foot firing cable of the weapon system is connected to port J4, the launch interface of the weapon system is connected to port J5, the two ends of the normally open auxiliary switch of the relay are respectively connected to port J4 and port J5, one end of the coil K1 of the relay is connected to the 28th pin of the main controller, and the other end is grounded. More specifically, the first pin of port J4 is connected to the first pin of port J5, and the two ends of the normally open auxiliary switch of the relay are respectively connected to the second pin of port J4 and the second pin of port J5.

[0048] In this embodiment, the No. 2 core wire is controlled by coil K1 to be connected or disconnected, so that the firing of the artillery can be controlled by this circuit design.

[0049] See also Figures 1 to 7 As shown, in one embodiment of the utility model, when in use, the power port J1 is plugged into the weapon's backup power socket, the port J3 is plugged into the data acquisition port of the weapon equipment system, the foot firing cable is removed from the weapon equipment system, connected to the port J4, and the same type of cable is used to connect to the launch interface of the weapon equipment system through the port J5.

[0050] After the system is powered on, coil K1 is in the on state, which does not affect the firing of the artillery. The main controller continuously collects the artillery azimuth data from the data acquisition port of the weapon equipment system, obtains the barrel position information of the artillery in real time, and compares it with the firing range data of the storage chip U4 to determine whether it has entered the prohibited shooting area: when the artillery moves into the prohibited shooting area, the coil K1 is powered off, the artillery firing control circuit is cut off, and the artillery cannot be fired. When the artillery leaves the prohibited shooting area, the coil K1 is powered on, the artillery firing circuit is restored, and the artillery continues to fire.

[0051] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

[0052] The above-described embodiments merely represent implementation methods of the utility model, and the protection scope of the utility model is not limited to the above-described embodiments. For those skilled in the art, several modifications and improvements can be made without departing from the concept of the utility model, and all of these belong to the protection scope of the utility model.

Claims

1. An external circuit for controlling the azimuth firing ban of a gun, characterized in that: It includes a main control system circuit, and a port J3 connected to the main control system circuit, a firing range storage circuit and a firing control circuit; And, the data acquisition port of the weapon equipment system is connected to port J3; The shooting range storage circuit includes a storage chip U4, the main control system circuit includes a main controller, the sixth pin of the storage chip U4 is connected to the twenty-second pin of the main controller, and the fifth pin of the storage chip U4 is connected to the twenty-third pin of the main controller; The launch control circuit includes port J4, port J5 and a relay; the foot firing cable of the weapon and equipment system is connected to port J4, the launch interface of the weapon and equipment system is connected to port J5, the two ends of the normally open auxiliary switch of the relay are respectively connected to port J4 and port J5, one end of the coil K1 of the relay is connected to the 28th pin of the main controller, and the other end is grounded.

2. The external circuit for controlling the artillery azimuth firing ban according to claim 1 is characterized in that: The A0 port, the A1 port, the A2 port of the memory chip U4 and the fourth pin of the memory chip U4 are grounded; the eighth pin of the memory chip U4 is connected to a power source.

3. The external circuit for controlling the artillery azimuth firing ban according to claim 1, characterized in that: The first pin of the port J4 is connected to the first pin of the port J5; and the two ends of the normally open auxiliary switch of the relay are connected to the second pin of the port J4 and the second pin of the port J5 respectively.

4. The external circuit for controlling the artillery azimuth firing prohibition according to claim 1, characterized in that: The first to eighth pins of the port J3 are connected to the first to eighth pins of the main controller in sequence respectively; the nineteenth to twenty-fourth pins of the port J3 are connected to the twelfth to seventeenth pins of the main controller in sequence respectively.

5. The external circuit for controlling the artillery azimuth firing prohibition according to claim 4 is characterized in that: The 37th, 39th to 41st pins of the port J3 are all connected to the 20th pin of the main controller and grounded.

6. The external circuit for controlling the artillery azimuth firing prohibition according to claim 1, characterized in that: The main control system circuit includes a power supply circuit; the power supply circuit includes a switching power supply module U1, capacitors C1, C2, a unidirectional diode D1 and a power port J1; Capacitors C1 and C2 are connected in parallel, and their two ends are respectively connected to the first lead and the third pin of the switching power supply module U1; the anode of the unidirectional diode D1 is connected to the first pin of the power port J1, and the cathode of the unidirectional diode D1 is connected to one end of the capacitor C1; the second pin of the power port J1 is connected to the other end of the capacitor C1.

7. The external circuit for controlling the artillery azimuth firing prohibition according to claim 6, characterized in that: The power supply circuit includes a voltage stabilizing diode D2, an inductor L1, and capacitors C3 and C4; The anode of the voltage stabilizing diode D2 is connected to the fifth pin of the switching power module U1, and the fifth pin of the switching power module U1 is grounded; the cathode of the voltage stabilizing diode D2 is connected to the second pin of the switching power module U1; One end of the inductor L1 is connected to the cathode of the voltage zener diode D2, and the other end is connected to the capacitor C3; One end of capacitor C3 is connected to inductor L1 and the fourth pin of switching power module U1, and the other end is connected to the fifth pin of switching power module U1; capacitor C4 is connected in parallel with capacitor C3, and the connection end of capacitor C4 and inductor L1 is also connected to the 40th pin of the main controller for power supply; the other end of capacitor C4 and the 20th pin of the main controller are connected to ground.

8. The external circuit for controlling the artillery azimuth firing prohibition according to claim 1, characterized in that: The main control system circuit includes a reset circuit; the reset circuit includes a reset button SW1, a capacitor C100 and a resistor R100; one end of the reset button SW1 is connected to the positive electrode of the capacitor C100 and connected to a power supply, and the other end of the reset button SW1 is connected to the negative electrode of the capacitor C100, the resistor R100 and the ninth pin of the main controller; and the non-connected ends of the resistor R100 and the capacitor C100 are grounded.

9. The external circuit for controlling the artillery azimuth firing prohibition according to claim 1, characterized in that: The main control system circuit includes a crystal oscillator circuit; the crystal oscillator circuit includes a crystal oscillator Y1, a capacitor C101 and a capacitor C102; the two ends of the crystal oscillator Y1 are respectively connected to the nineteenth and eighteenth pins of the main controller; and one end of the capacitor C101 is grounded, and the other end is connected to the body oscillator Y1 and the nineteenth pin of the main controller; one end of the capacitor C102 is grounded, and the other end is connected to the body oscillator Y1 and the eighteenth pin of the main controller.

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