Ignition control circuit with data storage function

Abstract

The invention provides an ignition control circuit with a data storage function, the ignition control circuit comprises an ignition control circuit and a data storage circuit, the ignition control circuit comprises a sensor signal conditioning circuit, a single-chip microcomputer control circuit, an ignition output circuit and an energy storage power supply circuit, the single-chip microcomputer control circuit receives analog signals output by the sensor signal conditioning circuit and outputs the analog signals to the ignition output circuit; an ignition signal is output to the ignition output circuit, and the energy storage power supply circuit supplies power to the sensor signal conditioning circuit and the single-chip microcomputer control circuit. The data storage chip is integrated in the ignition control circuit, overload data, timing / layer-counting / hole-counting working data and ignition capacitor discharge data are stored in real time through the single chip microcomputer of the ignition control circuit in the working process, the size of the test fuse is reduced, and the reliability of the test fuse is improved. And meanwhile, the problem of low reliability of test data of the existing test fuze is also solved.

Description

Technical Field

[0001] This invention relates to the field of fuse ignition control technology, specifically to an ignition control circuit with built-in data storage function. Background Technology

[0002] The main principle of a hard target penetration fuze is to use an accelerometer as an environmental information sensing element to sense the negative acceleration from the target resistance that the fuze experiences during the collision, penetration, and fusion of the hard target. Based on this environmental information, the fuze identifies the penetration process and position relative to the target in real time, completes the task of optimal detonation point identification and ignition control, and achieves efficient damage to the target.

[0003] The development of hard target penetration fuses requires extensive dynamic testing to assess the overload response capability of the ignition control module and the operating characteristics of the ignition circuit, thereby verifying the adaptability of the timing / layer / hole counting algorithms to the target. Currently, the commonly used testing method involves using a dedicated high-overload resistant data logger to record the various operating data of the ignition control module. This method requires adding a dedicated data recording module inside the fuse, which not only increases the size of the test product but also poses a risk of wire breakage during penetration, as the ignition control module and data logger are connected by wires. This could lead to the loss of critical data or even affect the fuse's normal output of the ignition signal. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a ignition control circuit with built-in data storage function to solve the problems mentioned in the background. The present invention integrates a data storage chip into the ignition control circuit. During the penetration process, the microcontroller of the ignition control circuit stores overload data, timing / layer / hole counting data, and ignition capacitor discharge data in real time. This not only reduces the size of the test fuze but also solves the problem of low reliability of test data in existing test fuzes.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a ignition control circuit with built-in data storage function, comprising an ignition control circuit and a data storage circuit; the ignition control circuit further comprises: a sensor signal conditioning circuit, a microcontroller control circuit, an ignition output circuit, and an energy storage power supply circuit; the data storage circuit comprises a data memory and an input filter capacitor, and the data storage circuit is used to receive working data sent by the microcontroller control circuit during the fuze penetration process in real time.

[0006] Furthermore, the microcontroller control circuit is used to receive the analog signal output by the sensor signal conditioning circuit and output the ignition signal to the ignition output circuit. The energy storage power supply circuit supplies power to the sensor signal conditioning circuit and the microcontroller control circuit.

[0007] Furthermore, the data storage circuit also includes: a data memory D2 and a first input filter capacitor C5, wherein the first input filter capacitor C5 is connected in parallel between the positive power supply VDD and the negative power supply VSS of the data memory D2.

[0008] Furthermore, the sensor signal conditioning circuit includes: a high-g acceleration sensor AR, an instrumentation amplifier N1, a gain resistor R1, a first voltage divider resistor R2, a second voltage divider resistor R3, and a first filter resistor R4. The high-g acceleration sensor is a bridge-type sensor.

[0009] Furthermore, the two output terminals of the high-g acceleration sensor are respectively connected to the non-inverting input terminal IN+ and the inverting input terminal IN- of the instrumentation amplifier N1. A gain resistor R1 is connected between the gain control terminals of the instrumentation amplifier N1. The reference voltage terminal REF of the instrumentation amplifier is connected to the common terminal of the first voltage divider resistor R2 and the second voltage divider resistor R3. The output terminal OUT of the instrumentation amplifier N1, the first filter resistor R4, and the analog signal input terminal P2.2 of the microcontroller D1 are connected in series.

[0010] Furthermore, the microcontroller control circuit includes: a microcontroller D1, a pull-up resistor R7, and a mechanical inertia switch GB. The trigger terminal P2.3 of the microcontroller D1, the pull-up resistor R7, and the power supply are connected in series. The mechanical inertia switch GB is connected in parallel between the trigger terminal P2.3 of the microcontroller D1 and the reference ground. The data transmitting terminal TX of the microcontroller D1 is connected to the fuze transmitting interface TXD, and the data receiving terminal RX of the microcontroller D1 is connected to the fuze receiving interface RXD, which are used for the microcontroller to send and receive data communication commands, respectively.

[0011] Furthermore, the ignition output circuit includes: a 24V battery pack E1, a first current-limiting resistor R6, a first isolation diode V1, an ignition capacitor C4, a field-effect transistor V4, and a pyrotechnic component DL.

[0012] Furthermore, the positive terminal of the 24V battery pack E1, the first current-limiting resistor R6, and the anode of the first isolation diode V1 are connected in series. The cathode of the first isolation diode V1, the ignition capacitor C4, and the reference ground are connected in series. The cathode of the first isolation diode V1, the pyrotechnic device DL, and the drain of the field-effect transistor V4 are connected in series. The gate of the field-effect transistor V4 is connected to the digital signal output terminal P1.1 of the microcontroller, and the source of the field-effect transistor V4 is connected to the reference ground.

[0013] Furthermore, the energy storage power supply circuit includes: a 12V battery pack E2, a second current-limiting resistor R5, a second isolation diode V2, a voltage regulator N2, an energy storage capacitor C1, a second input filter capacitor C2, and an output filter capacitor C3. The positive terminal of the 12V battery pack E2, the second current-limiting resistor R5, the second isolation diode V2, and the input terminal IN of the voltage regulator N2 are connected in series. The energy storage capacitor C1 is connected in series between the common anode terminal of the second current-limiting resistor R5 and the second isolation diode V2 and the reference ground.

[0014] Furthermore, a second input filter capacitor C2 is connected in parallel between the input terminal IN of the voltage regulator N2 and the reference ground, and an output filter capacitor C3 is connected in parallel between the output terminal OUT of the voltage regulator N2 and the reference ground. The positive terminal of the 12V battery pack E2 is connected to the input terminal IN of the voltage regulator N2, and the output terminal OUT of the voltage regulator N2 supplies power to the sensor signal conditioning circuit and the microcontroller control circuit.

[0015] The beneficial effects of this invention are:

[0016] 1. This ignition control circuit with built-in data storage function integrates a data storage device within the ignition control circuit. During the test, while the ignition control circuit performs the ignition control function, it stores the working data in the data storage device. After the test, the data is read back from the recovery ignition control module, thus enabling effective evaluation of the test results.

[0017] 2. This ignition control circuit with built-in data storage function does not require an additional recording module. Utilizing the product's equivalent structure, it does not increase the size of the test fuze, and the stored data is more accurate, solving the problem of low reliability of test data in existing test fuzes. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an ignition control circuit with built-in data storage function according to the present invention. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0020] Please see Figure 1This invention provides the following technical solution: an ignition control circuit with built-in data storage function. This control circuit integrates a data storage device within the ignition control circuit. During the test, while performing the ignition control function, the ignition control circuit simultaneously stores working data in the data storage device. After the test, the data is read back from the recovery ignition control module, enabling effective evaluation of the test results. Furthermore, this circuit eliminates the need for an additional recording module, utilizes an equivalent product structure, does not increase the size of the test fuze, and stores more accurate data, thus solving the problem of low reliability of existing test fuze test data.

[0021] Specifically, the ignition control circuit provided in this embodiment includes a sensor signal conditioning circuit, a microcontroller control circuit, an ignition output circuit, and an energy storage power supply circuit. The microcontroller control circuit receives the analog signal output by the sensor signal conditioning circuit and outputs the ignition signal to the ignition output circuit. The energy storage power supply circuit supplies power to the sensor signal conditioning circuit and the microcontroller control circuit.

[0022] The sensor signal conditioning circuit includes a high-g acceleration sensor AR, an instrumentation amplifier N1, a gain resistor R1, a first voltage divider resistor R2, a second voltage divider resistor R3, and a first filter resistor R4. The high-g acceleration sensor is a bridge-type sensor, and its two output terminals are respectively connected to the non-inverting input terminal IN+ and the inverting input terminal IN- of the instrumentation amplifier N1. The gain control terminals of the instrumentation amplifier N1 are connected to the gain resistor R1. The reference voltage terminal REF of the instrumentation amplifier is connected to the common terminal of the first voltage divider resistor R2 and the second voltage divider resistor R3. The output terminal OUT of the instrumentation amplifier N1, the first filter resistor R4, and the analog signal input terminal P2.2 of the microcontroller D1 are connected in series.

[0023] The microcontroller control circuit includes a microcontroller D1, a pull-up resistor R7, and a mechanical inertia switch GB. The trigger terminal P2.3 of the microcontroller D1, the pull-up resistor R7, and the power supply are connected in series. The mechanical inertia switch GB is connected in parallel between the trigger terminal P2.3 of the microcontroller D1 and the reference ground. The data transmitting terminal TX of the microcontroller D1 is connected to the fuse transmitting interface TXD, and the data receiving terminal RX of the microcontroller D1 is connected to the fuse receiving interface RXD, which are used for the microcontroller to send and receive data communication commands, respectively.

[0024] The microcontroller D1 receives the analog signal and outputs an ignition signal to the ignition output circuit through the digital signal output terminal P1.1, based on the set delay time, number of layers and ignition control algorithm.

[0025] The ignition output circuit includes a 24V battery pack E1, a first current-limiting resistor R6, a first isolation diode V1, an ignition capacitor C4, a field-effect transistor V4, and a pyrotechnic device DL. The positive terminal of the 24V battery pack E1, the first current-limiting resistor R6, and the anode of the first isolation diode V1 are connected in series. The cathode of the first isolation diode V1, the ignition capacitor C4, and the reference ground are connected in series. The cathode of the first isolation diode V1, the pyrotechnic device DL, and the drain of the field-effect transistor V4 are connected in series. The gate of the field-effect transistor V4 is connected to the digital signal output terminal P1.1 of the microcontroller, and the source of the field-effect transistor V4 is connected to the reference ground.

[0026] The energy storage power supply circuit includes a 12V battery pack E2, a second current-limiting resistor R5, a second isolation diode V2, a voltage regulator N2, an energy storage capacitor C1, a second input filter capacitor C2, and an output filter capacitor C3. The positive terminal of the 12V battery pack E2, the second current-limiting resistor R5, the second isolation diode V2, and the input terminal IN of the voltage regulator N2 are connected in series. The energy storage capacitor C1 is connected in series between the common anode terminal of the second current-limiting resistor R5 and the second isolation diode V2 and the reference ground. The second input filter capacitor C2 is connected in parallel between the input terminal IN of the voltage regulator N2 and the reference ground. The output filter capacitor C3 is connected in parallel between the output terminal OUT of the voltage regulator N2 and the reference ground. The positive terminal of the 12V battery pack E2 is connected to the input terminal IN of the voltage regulator N2. The output terminal OUT of the voltage regulator N2 supplies power to the sensor signal conditioning circuit and the microcontroller control circuit.

[0027] The data storage circuit includes a data memory D2 and a first input filter capacitor C5. The first input filter capacitor C5 is connected in parallel between the positive power supply VDD and the negative power supply VSS of the data memory D2.

[0028] This embodiment also includes an energy storage capacitor C1 of 22μF, a first input filter capacitor C5 of 0.1μF, a second input filter capacitor C2 of 2.2μF, an output filter capacitor C3 of 2.2μF, an ignition capacitor C4 of 33μF, a gain resistor R1 of 10kΩ, a first voltage divider resistor R2 of 1kΩ~10kΩ, a second voltage divider resistor R3 of 1kΩ~10kΩ (the specific voltage divider resistor values ​​are determined by the specific offset voltage of the sensor), a filter resistor R4 of 10kΩ, a first current limiting resistor R6 of 1kΩ, a second current limiting resistor R5 of 1kΩ, and a pull-up resistor R7 of 10kΩ. kΩ, microcontroller D1 is MSP430F2132, instrumentation amplifier N1 is AD623, voltage regulator N2 is MAX1615, first isolation diode V1 is BAS16H, second isolation diode V2 is BAS16H, field effect transistor V4 is IRLL2705, 24V battery pack E1 is a 24V lithium manganese battery pack, 12V battery pack E2 is a 12V lithium manganese battery pack, high g acceleration sensor AR has a range of 60,000g, mechanical inertial switch GB has a closing threshold of 100g, and pyrotechnic device DL is a 16V / 10μF instantaneous electric detonator under ignition conditions.

[0029] In this implementation, apart from the high-g acceleration sensor, all resistors, capacitors, instrumentation amplifiers, and microcontrollers are surface-mount components. After being reinforced with epoxy potting compound, the circuit has high reliability under high overload conditions.

[0030] The foregoing has shown and described the basic principles and main features of the present invention and its advantages. It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A firing control circuit with data storage, characterized by: The application relates to a fuse control circuit and a data storage circuit; the fuse control circuit further comprises a sensor signal conditioning circuit, a single-chip microcomputer control circuit, a firing output circuit and an energy storage power supply circuit; the data storage circuit comprises a data storage and an input filter capacitor, and the data storage circuit is used for receiving working data sent by the single-chip microcomputer control circuit in a fuze penetration process in real time.

2. The fire control circuit with data storage function according to claim 1, characterized in that: The single-chip microcomputer control circuit is used for receiving an analog signal output by the sensor signal conditioning circuit, outputting a firing signal to the firing output circuit, and supplying power to the sensor signal conditioning circuit and the single-chip microcomputer control circuit by the energy storage power supply circuit.

3. The fire control circuit with data storage function according to claim 1, characterized in that: The data storage circuit further comprises a data storage D2 and a first input filter capacitor C5, and the data storage D2 is connected in parallel between a power supply positive VDD and a power supply negative VSS and the first input filter capacitor C5.

4. The fire control circuit with data storage function according to claim 2, characterized in that: The sensor signal conditioning circuit comprises a high-g value acceleration sensor AR, an instrument amplifier N1, a gain resistor R1, a first voltage dividing resistor R2, a second voltage dividing resistor R3 and a first filter resistor R4, and the high-g value acceleration sensor is a bridge type sensor.

5. The data storage function enabled firing control circuit of claim 4, wherein: Two output ends of the high-g value acceleration sensor are connected to a non-inverting input end IN+ and an inverting input end IN- of the instrument amplifier N1 respectively, the gain resistor R1 is connected between gain control ends of the instrument amplifier N1, a reference voltage end REF of the instrument amplifier is connected to a common end of the first voltage dividing resistor R2 and the second voltage dividing resistor R3, and an output end OUT of the instrument amplifier N1, the first filter resistor R4 and an analog signal input end P2.2 of a single-chip microcomputer D1 are connected in series.

6. The data storage function enabled firing control circuit of claim 2, wherein: The single-chip microcomputer control circuit comprises the single-chip microcomputer D1, a pull-up resistor R7 and a mechanical inertia switch GB, the trigger end P2.3 of the single-chip microcomputer D1, the pull-up resistor R7 and a power supply are connected in series, the trigger end P2.3 of the single-chip microcomputer D1 is connected in parallel with the mechanical inertia switch GB between a reference ground, a data sending end TX of the single-chip microcomputer D1 is connected to a fuze sending interface TXD, a data receiving end RX of the single-chip microcomputer D1 is connected to a fuze receiving interface RXD, and the single-chip microcomputer is respectively used for sending and receiving data communication instructions.

7. The data storage function enabled firing control circuit of claim 2, wherein: The firing output circuit comprises a 24V battery E1, a first current limiting resistor R6, a first isolation diode V1, a firing capacitor C4, a field effect tube V4 and a pyrotechnics DL.

8. The data storage function enabled firing control circuit of claim 7, wherein: The positive pole of the 24V battery E1, the first current limiting resistor R6 and the anode of the first isolation diode V1 are connected in series, the cathode of the first isolation diode V1, the firing capacitor C4 and a reference ground are connected in series, the cathode of the first isolation diode V1, the pyrotechnics DL and the drain of the field effect tube V4 are connected in series, the gate of the field effect tube V4 is connected to a digital signal output end P1.1 of the single-chip microcomputer, and the source of the field effect tube V4 is connected to the reference ground.

9. The data storage function enabled firing control circuit of claim 2, wherein: The energy storage power supply circuit comprises a 12V battery E2, a second current-limiting resistor R5, a second isolation diode V2, a voltage stabilizer N2, an energy storage capacitor C1, a second input filter capacitor C2 and an output filter capacitor C3, the positive electrode of the 12V battery E2, the second current-limiting resistor R5, the second isolation diode V2 and the input end IN of the voltage stabilizer N2 are connected in series, and the second current-limiting resistor R5 and the anode common end of the second isolation diode V2 are connected in series with the energy storage capacitor C1 between the reference ground.

10. The data storage function enabled firing control circuit of claim 9, wherein: The second input filter capacitor C2 is connected in parallel between the input end IN of the voltage stabilizer N2 and the reference ground, the output filter capacitor C3 is connected in parallel between the output end OUT of the voltage stabilizer N2 and the reference ground, the positive electrode of the 12V battery E2 is connected to the input end IN of the voltage stabilizer N2, and the output end OUT of the voltage stabilizer N2 supplies power to the sensor signal conditioning circuit and the single-chip microcomputer control circuit.

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