Design method of electric firing control circuit of transmitter

Abstract

The invention provides a design method of an electric firing control circuit of a launcher. The launcher is provided with a firing fuse, a secondary firing handle and a firing coil. The control circuit comprises a percussion signal acquisition circuit, a microcontroller and a percussion coil driving circuit. The percussion signal acquisition circuit adopts a four-channel differential line receiver to receive two-stage percussion differential signals of a two-stage percussion handle and one-path differential signals of a percussion fuse, and converts the three paths of differential signals into three paths of high-low level signals, and a microcontroller acquires the three paths of high-low level signals, modulates the three paths of high-low level signals and outputs the modulated high-low level signals to a percussion coil driving circuit; the firing coil driving circuit outputs a firing control signal to the high-power MOS tube after firing arbitration, the high-power MOS tube outputs a driving signal to the firing coil, and the firing coil controls the electromagnet to attract so as to pull the trigger of the launcher, so that the electric firing control of the launcher is realized. The system is simple in design, flexible in control, higher in safety and wider in applicability.

Description

Technical Field

[0001] The invention relates to the field of circuit design, and in particular to a design method for a transmitter electric shock control circuit. Background Art

[0002] At present, compared with the automation process in other fields, the automation control of firearms has many shortcomings. For example, for the electric firing control of the launcher, most of the launchers currently fire by manually pulling the trigger to achieve the purpose of firing the projectile. There are many problems with this operation method. On the one hand, in the process of firearms development, shooting tests need to be carried out at the shooting range, and generally the test personnel are responsible for pulling the trigger to fire. However, the operator is exposed to the danger zone when pulling the trigger. If there are faults and defects in the design and production of the firearm, it is easy to explode the chamber, which poses a safety risk. On the other hand, when the launcher weapon station is integrated into a mobile platform, remote control operation is adopted. In a real battlefield environment, due to the cumbersome firing control process of the weapon station system, high requirements for operational safety are required, and the existing electric firing control method is single and not flexible enough, which poses a safety risk. Summary of the invention

[0003] In view of the above problems, the purpose of the present invention is to provide a design method for a transmitter electric shock control circuit, which has higher safety, simple design and flexible control.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is: A design method for a transmitter electric firing control circuit, the transmitter has a firing safety, a secondary firing handle and a firing coil, characterized in that the control circuit includes a firing signal acquisition circuit, a microcontroller and a firing coil drive circuit; the firing signal acquisition circuit uses a four-channel differential line receiver to receive two-stage firing differential signals of the secondary firing handle and one differential signal of the firing safety, and converts the three differential signals into three high and low level signals, the microcontroller collects the three high and low level signals and modulates them and outputs them to the firing coil drive circuit, the firing coil drive circuit outputs a firing control signal to a high-power MOS tube after firing arbitration, the high-power MOS tube outputs a drive signal to the firing coil, the firing coil controls the electromagnet to attract and thereby pull the transmitter trigger, thereby realizing the electric firing control of the transmitter.

[0005] Furthermore, the firing signal acquisition circuit includes a socket JP1 and a four-channel differential line receiver MS2375T, and the two-stage firing differential signals JF_1Y, JF_1Z, JF_2Y, JF_2Z of the secondary firing handle and one differential signal JF_BXY, JF_BXZ of the firing safety are connected to the differential input pins 1A, 1Y, 2A, 2Y, 3A, 3Y of the four-channel differential line receiver MS2375T through the socket JP1.

[0006] The CF_EN pin of the microcontroller is connected to the enable pin G of the four-channel differential line receiver MS2375T, which controls the four-channel differential line receiver MS2375T to convert the firing differential signal into three high and low level signals and output them to the JF_1, JF_2, and JF_3 pins of the microcontroller through pins 1Z, 2Z, and 3Z respectively, so as to enable the microcontroller to collect the two-stage firing differential signals of the secondary firing handle and one differential signal of the firing safety.

[0007] The firing coil driving circuit includes a resistor R8, a resistor R9, a resistor R10, a transistor V1, a resistor R11, a field effect transistor Q1, a firing input power supply, a Schott diode D1, a transient suppression diode D2 and a firing output power supply JF24.

[0008] The microcontroller outputs the firing control signal to resistor R9 through pin JF_EN, which is connected to the base of transistor V1 after being pulled down by resistor R10. The emitter of transistor V1 is grounded, and the collector of transistor V1 is connected to resistor R11. One end of resistor R11 is connected to the gate of field effect transistor Q1, and the other end is connected to the firing input power supply through resistor R8; the source of field effect transistor Q1 is connected to the firing input power supply, the drain is connected to the firing output power supply JF24, the cathode of Schott diode D1 and transient suppression diode D2 are connected to the firing output power supply JF24, and the positive electrode is grounded.

[0009] Compared with the prior art, the beneficial effects of the present invention are: compared with the existing transmitter electric firing control circuit, the present invention adopts a four-channel differential line receiving chip and a power MOS tube and a simple peripheral circuit to realize the collection of firing signals and the driving of the firing coil. It has a simple design and flexible control. It can receive the two-stage firing differential signal of the two-stage firing handle and the differential signal of the firing insurance in combination with the firing range to comprehensively determine whether it is an electric firing. It has higher safety. The use of a high-power MOS tube to drive the firing coil is suitable for driving firing coils that require different driving capabilities, and has a wider applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a block diagram of the electric shock control principle of the present invention; Figure 2 It is the electric shock control circuit diagram of the present invention. DETAILED DESCRIPTION

[0011] The technical solution of the present invention is clearly and completely described below in conjunction with the accompanying drawings and specific embodiments.

[0012] Reference Figure 1-2As shown, a design method for a transmitter electric firing control circuit is provided, the transmitter has a firing safety, a secondary firing handle and a firing coil, the control circuit includes a firing signal acquisition circuit, a microcontroller and a firing coil drive circuit; the firing signal acquisition circuit adopts a four-channel differential line receiver to receive the two-stage firing differential signals of the secondary firing handle and one differential signal of the firing safety, and converts the three differential signals into three high and low level signals, the microcontroller collects the three high and low level signals and modulates them and outputs them to the firing coil drive circuit, the firing coil drive circuit outputs a firing control signal to a high-power MOS tube after firing arbitration, the high-power MOS tube outputs a drive signal to the firing coil, the firing coil controls the electromagnet to attract and thereby pull the transmitter trigger, thereby realizing the electric firing control of the transmitter.

[0013] The firing signal acquisition circuit includes a socket JP1 and a four-channel differential line receiver MS2375T. The two-stage firing differential signals JF_1Y, JF_1Z, JF_2Y, JF_2Z of the secondary firing handle and one differential signal JF_BXY, JF_BXZ of the firing safety are connected to the differential input pins 1A, 1Y, 2A, 2Y, 3A, 3Y of the four-channel differential line receiver MS2375T through the socket JP1.

[0014] The CF_EN pin of the microcontroller is connected to the enable pin G of the four-channel differential line receiver MS2375T, which controls the four-channel differential line receiver MS2375T to convert the firing differential signal into three high and low level signals and output them to the JF_1, JF_2, and JF_3 pins of the microcontroller through pins 1Z, 2Z, and 3Z respectively, so as to enable the microcontroller to collect the two-stage firing differential signals of the secondary firing handle and one differential signal of the firing safety.

[0015] The firing coil driving circuit includes a resistor R8, a resistor R9, a resistor R10, a transistor V1, a resistor R11, a field effect transistor Q1, a firing input power supply, a Schott diode D1, a transient suppression diode D2 and a firing output power supply JF24.

[0016] The microcontroller outputs the firing control signal to resistor R9 through pin JF_EN, which is connected to the base of transistor V1 after being pulled down by resistor R10. The emitter of transistor V1 is grounded, and the collector of transistor V1 is connected to resistor R11. One end of resistor R11 is connected to the gate of field effect transistor Q1, and the other end is connected to the firing input power supply through resistor R8; the source of field effect transistor Q1 is connected to the firing input power supply, the drain is connected to the firing output power supply JF24, the cathode of Schott diode D1 and transient suppression diode D2 are connected to the firing output power supply JF24, and the positive electrode is grounded.

[0017] Figure 2In the figure, the two-stage firing differential signals (JF_1Y, JF_1Z, JF_2Y, JF_2Z) of the two-stage firing handle and one differential signal (JF_BXY, JF_BXZ) of the firing insurance are connected to the differential input pins (1A, 1Y, 2A, 2Y, 3A, 3Y) of the four-channel differential line receiver MS2375T through the socket JP1, and the CF_EN pin of the microcontroller GD32F103C8T6 is connected to the enable pin G of the four-channel differential line receiver MS2375T, which controls MS2375T to convert the firing differential signals into three high and low level signals and output them to the JF_1, JF_2, and JF_3 pins of the microcontroller through pins 1Z, 2Z, and 3Z respectively, so as to realize the microcontroller to collect the two-stage firing differential signals of the firing handle and one differential signal of the firing insurance. The microcontroller outputs the firing control signal to the resistor R9 through the pin JF_EN, which is then pulled down by R10 and connected to the base of the transistor V1 (S9013). The emitter of V1 is grounded, and the collector of the transistor V1 is connected to R11. One end of R11 is connected to the gate of the field effect transistor Q1, and the other end is connected to the firing input power supply +24V through R8. The source of the field effect transistor Q1 (IRF9310) is connected to the firing input power supply +24V, the drain is connected to the firing output power supply JF24, the cathode of the Schott diode D1 (10SQ080) and the transient suppression diode D2 (TH8S24A) are connected to the firing output power supply JF24, and the anode is grounded. Since the firing output power supply is directly connected to the firing coil through the socket JP2, the Schott diode D1 can quickly discharge the negative voltage generated by the firing coil, and the transient suppression diode D2 can quickly absorb the voltage exceeding 24V, thereby protecting the MOS tube Q1. The microcontroller controls the transistor V1 to turn on through the firing signal JF_EN, and then controls the MOS tube Q1 to turn on, so that the firing coil is energized, and the electromagnet is used to attract and pull the trigger of the transmitter to realize the electric firing control of the transmitter.

Claims

1. A design method for a transmitter electric firing control circuit, the transmitter having a firing safety, a secondary firing handle and a firing coil, characterized in that: The control circuit includes a firing signal acquisition circuit, a microcontroller and a firing coil drive circuit; the firing signal acquisition circuit adopts a four-channel differential line receiver to receive the two-stage firing differential signals of the secondary firing handle and one differential signal of the firing safety, and converts the three differential signals into three high and low level signals. The microcontroller collects the three high and low level signals and modulates them and outputs them to the firing coil drive circuit. After the firing arbitration, the firing coil drive circuit outputs the firing control signal to the high-power MOS tube, and the high-power MOS tube outputs the driving signal to the firing coil. The firing coil controls the electromagnet to attract and pull the transmitter trigger to realize the electric firing control of the transmitter.

2. The design method of a transmitter electric shock control circuit according to claim 1 is characterized in that: The firing signal acquisition circuit includes a socket JP1 and a four-channel differential line receiver MS2375T. The two-stage firing differential signals JF_1Y, JF_1Z, JF_2Y, JF_2Z of the secondary firing handle and one differential signal JF_BXY, JF_BXZ of the firing safety are connected to the differential input pins 1A, 1Y, 2A, 2Y, 3A, 3Y of the four-channel differential line receiver MS2375T through the socket JP1.

3. The design method of a transmitter electric shock control circuit according to claim 2 is characterized in that: The CF_EN pin of the microcontroller is connected to the enable pin G of the four-channel differential line receiver MS2375T, which controls the four-channel differential line receiver MS2375T to convert the firing differential signal into three high and low level signals and output them to the JF_1, JF_2, and JF_3 pins of the microcontroller through pins 1Z, 2Z, and 3Z respectively, so as to enable the microcontroller to collect the two-stage firing differential signals of the secondary firing handle and one differential signal of the firing safety.

4. The design method of a transmitter electric shock control circuit according to claim 3 is characterized in that: The firing coil driving circuit includes a resistor R8, a resistor R9, a resistor R10, a transistor V1, a resistor R11, a field effect transistor Q1, a firing input power supply, a Schott diode D1, a transient suppression diode D2 and a firing output power supply JF24.

5. The design method of a transmitter electric shock control circuit according to claim 4 is characterized in that: The microcontroller outputs the firing control signal to resistor R9 through pin JF_EN, which is connected to the base of transistor V1 after being pulled down by resistor R10. The emitter of transistor V1 is grounded, and the collector of transistor V1 is connected to resistor R11. One end of resistor R11 is connected to the gate of field effect transistor Q1, and the other end is connected to the firing input power supply through resistor R8; the source of field effect transistor Q1 is connected to the firing input power supply, the drain is connected to the firing output power supply JF24, the cathode of Schott diode D1 and transient suppression diode D2 are connected to the firing output power supply JF24, and the positive electrode is grounded.

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