In-line safety actuator multi-point synchronization initiation system

Abstract

The present application relates to a kind of in-line safety actuator multi-point synchronous initiation system, belong to safety actuator technical field, solve the problem of poor safety, reliability, synchronism and relatively large volume and weight in prior art multi-point synchronous initiation system.The system includes electronic insurance module for according to the control signal of the first and second level insurance that the controller module sends is received, the first and second level insurance is released;Pressure module is used for according to the control signal of the third level insurance that the controller module sends is received, the third level insurance is released, and voltage is applied to each initiation module after the third level insurance is released;Initiation module is used for high voltage charging based on the voltage applied by pressure module, and high voltage charging state signal is fed back to the controller module;Controller module is also used for according to the initiation instruction and high voltage charging state signal received, generates the initiation control signal of each initiation module;Initiation module is also used for according to the initiation control signal received, detonation.

Description

Technical Field

[0001] This invention relates to the field of safety actuator technology, and in particular to a multi-point synchronous detonation system for a linear safety actuator. Background Technology

[0002] Conventional mechanical multi-point detonation systems use conventional electric detonator arrays, thus requiring independent mechanical safety release devices or explosion logic networks to achieve multi-point detonation functionality. However, equipping conventional mechanical multi-point detonation systems with independent mechanical safety release devices or complex explosion logic networks significantly increases their weight and size, reducing the reliability and testability of the multi-point detonation system. The electric detonators in conventional mechanical multi-point detonation systems are typically welded, making the process irreversible after energization testing, leading to direct ignition. Furthermore, the system is susceptible to external environmental interference, further reducing its testability and reliability. Additionally, due to the use of numerous conventional electric detonators, the target charge typically uses sensitive initiating agents, requiring lower excitation energy, thus reducing the safety of the multi-point detonation system. The lower excitation energy required for sensitive agents means that common everyday factors such as static electricity or drops can cause accidental detonation, leading to production safety accidents. Moreover, conventional electric detonators have long activation times and significant synchronization variations, making it impossible to meet high synchronization requirements when there are many detonation points. Summary of the Invention

[0003] Based on the above analysis, the present invention aims to provide a multi-point synchronous detonation system with an inline safety actuator to solve the problems of poor safety, reliability, synchronization, and large size and weight of existing multi-point synchronous detonation systems.

[0004] This invention provides a multi-point synchronous detonation system for an inline safety actuator, including a controller module, an electronic safety module, a pressure application module, and multiple detonation modules;

[0005] The controller module is used to generate release control signals for Level 1, Level 2, and Level 3 insurance based on the collected external environment information;

[0006] The electronic insurance module is used to release the primary and secondary insurance based on the release control signal of the primary and secondary insurance sent by the controller module.

[0007] The pressure application module is used to release the third-level safety according to the release control signal of the third-level safety sent by the controller module, and to apply voltage to each detonation module after releasing the third-level safety.

[0008] The detonation module is used to perform high-voltage charging based on the voltage applied by the pressure application module, and to feed back the high-voltage charging status signal to the controller module.

[0009] The controller module is also used to generate detonation control signals for each detonation module based on the received detonation command and high-voltage charging status signal.

[0010] The detonation module is also used to detonate the explosive based on the received detonation control signal.

[0011] Furthermore, the detonation control signal includes a first detonation control signal and a second detonation control signal; the controller module includes an ARM and a CPLD;

[0012] The ARM is used to generate release control signals for primary and secondary fuses based on received external environment information; it is also used to generate the first detonation control signal for each detonation module based on received detonation command and high-voltage charging status signal.

[0013] The CPLD is used to generate a three-level safety release control signal based on the received external environment information; it is also used to generate a second detonation control signal for each detonation module based on the received detonation command and high-voltage charging status signal.

[0014] Furthermore, the detonation module includes a rectifier diode, a high-voltage capacitor, an impact detonator, a high-voltage feedback circuit, and a detonation control circuit;

[0015] The positive terminal of the rectifier diode serves as the positive power supply terminal of the detonation module and is connected to the positive power supply terminal of the pressure application module; the negative terminal of the rectifier diode is connected to one end of the high-voltage capacitor; the other end of the high-voltage capacitor serves as the negative power supply terminal of the detonation module and is connected to the negative power supply terminal of the pressure application module.

[0016] One end of the high-voltage capacitor is also connected to one end of the impact detonator, and the other end of the high-voltage capacitor is also connected to the third input terminal of the detonation control circuit; the other end of the impact detonator is connected to the first output terminal of the detonation control circuit; the first input terminal of the detonation control circuit serves as the first input terminal of the detonation module, receiving the first detonation control signal from the controller module; the second input terminal of the detonation control circuit serves as the second input terminal of the detonation module, receiving the second detonation control signal from the controller module.

[0017] The first input terminal of the high-voltage feedback circuit is connected to one end of the high-voltage capacitor, and the second input terminal is connected to the other end of the high-voltage capacitor; the output terminal of the high-voltage feedback circuit serves as the high-voltage feedback terminal of the detonation module, outputting a high-voltage charging status signal.

[0018] Furthermore, the detonation control circuit includes a seventh resistor, a tenth resistor, a first high-voltage switch, a second high-voltage switch, a first synchronization unit, and a second synchronization unit;

[0019] The drain of the first high-voltage switch serves as the third input terminal of the detonation control circuit, and the source terminal serves as the output terminal of the detonation control circuit.

[0020] The gate of the first high-voltage switch is connected to the power supply after passing through the tenth resistor, and is also connected to the drain of the second high-voltage switch after passing through the seventh resistor.

[0021] The source of the second high-voltage switch is connected to the output terminal of the first synchronization unit, and the input terminal of the first synchronization unit serves as the first input terminal of the detonation control circuit; the gate of the second high-voltage switch is connected to the output terminal of the second synchronization unit, and the input terminal of the second synchronization unit serves as the second input terminal of the detonation control circuit.

[0022] Furthermore, the first synchronization unit includes a first high-speed isolation chip, a first high-speed gate driver, and a first RC filter circuit; the input terminal of the first high-speed isolation chip serves as the input terminal of the first synchronization unit, and its output terminal is connected to the input terminal of the first high-speed gate driver; the output terminal of the first high-speed gate driver is connected to the input terminal of the first RC filter circuit; the output terminal of the first RC filter circuit serves as the output terminal of the first synchronization unit.

[0023] The second synchronization unit includes a second high-speed isolation chip, a second high-speed gate driver, and a second RC filter circuit; the input terminal of the second high-speed isolation chip serves as the input terminal of the second synchronization unit, and its output terminal is connected to the input terminal of the second high-speed gate driver; the output terminal of the second high-speed gate driver is connected to the input terminal of the second RC filter circuit; and the output terminal of the second RC filter circuit serves as the output terminal of the second synchronization unit.

[0024] Furthermore, the first RC filter circuit includes an eighth resistor and a fourth capacitor; one end of the eighth resistor is connected to one end of the fourth capacitor and serves as the input terminal of the first RC filter circuit; the other end of the eighth resistor serves as the output terminal of the first RC filter circuit; and the other end of the fourth capacitor is grounded.

[0025] The second RC filter circuit includes a ninth resistor and a fifth capacitor; one end of the ninth resistor is connected to one end of the fifth capacitor and serves as the input terminal of the second RC filter circuit; the other end of the ninth resistor serves as the output terminal of the second RC filter circuit; and the other end of the fifth capacitor is grounded.

[0026] Furthermore, the high-voltage feedback circuit includes a sampling circuit and a feedback circuit;

[0027] The first input terminal of the sampling circuit serves as the first input terminal of the high-voltage feedback circuit, and the second input terminal serves as the second input terminal of the high-voltage feedback circuit; the output terminal of the sampling circuit is connected to the input terminal of the feedback circuit; the output terminal of the feedback circuit serves as the output terminal of the high-voltage feedback circuit.

[0028] Furthermore, the feedback circuit includes a ferrite bead, a first comparator, a second comparator, a first resistor, a second resistor, a third resistor, a sixth resistor, a second capacitor, and a third capacitor;

[0029] One end of the ferrite bead serves as the input terminal of the feedback circuit, and the other end is connected to the non-inverting input terminal of the first comparator; the other end of the ferrite bead is also grounded after passing through a second capacitor.

[0030] The inverting input terminal of the first comparator is connected to its output terminal; the output terminal of the first comparator is connected to the non-inverting input terminal of the second comparator via a sixth resistor.

[0031] The non-inverting input of the second comparator is grounded after passing through a third capacitor; the inverting input of the second comparator is grounded after passing through a first resistor and a second resistor in series; the inverting input of the second comparator is also connected to the power supply after passing through a third resistor; the output of the second comparator serves as the output of the feedback circuit.

[0032] Furthermore, the sampling circuit includes a fourth resistor and a fifth resistor;

[0033] One end of the fourth resistor serves as the first input terminal of the sampling circuit, and the other end is connected to one end of the fifth resistor, which also serves as the output terminal of the sampling circuit; the other end of the fifth resistor serves as the second input terminal of the sampling circuit.

[0034] Furthermore, the first high-voltage switch is a PMOS transistor, and the second high-voltage switch is an NMOS transistor.

[0035] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0036] This invention provides a multi-point synchronous detonation system for a linear safety actuator. It comprises a controller module that generates release control signals for primary, secondary, and tertiary fuses based on collected external environmental information, and detonation control signals for each detonation module based on received detonation commands and high-voltage charging status signals. It also includes an electronic fuse module that releases the primary and secondary fuses based on the received release control signals, a tertiary fuse module that releases the tertiary fuse based on the received release control signal, applies voltage to each detonation module after the tertiary fuse is released, and multiple detonation modules that perform high-voltage charging based on the voltage applied by the pressure module, feed back high-voltage charging status signals, and detonate based on the received detonation control signals. The fully electronic release of fuses ensures high safety and reliability for the multi-point synchronous detonation system; effectively reduces detonation delay between multiple detonation points, and provides good synchronization; it overcomes the shortcomings of conventional mechanical multi-point detonation systems in terms of size and weight, and has good testability; furthermore, the controller module adopts an ARM+CPLD configuration to prevent common-cause failure problems.

[0037] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained from what is particularly pointed out in the description and drawings. Attached Figure Description

[0038] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0039] Figure 1 This is a schematic diagram of a multi-point synchronous detonation system for an inline safety actuator provided in an embodiment of the present invention;

[0040] Figure 2 This is a schematic diagram showing the specific connection of the multi-point synchronous detonation system provided in an embodiment of the present invention;

[0041] Figure 3 This is a connection diagram of the detonation control circuit provided in an embodiment of the present invention;

[0042] Figure 4 This is a connection diagram of the high-voltage feedback circuit provided in an embodiment of the present invention. Detailed Implementation

[0043] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0044] A specific embodiment of the present invention discloses a multi-point synchronous initiation system for an inline safety actuator, such as... Figure 1 As shown, it includes a controller module, an electronic safety module, a pressure application module, and multiple detonation modules;

[0045] The controller module is used to generate release control signals for Level 1, Level 2, and Level 3 insurance based on the collected external environment information;

[0046] The electronic insurance module is used to release the primary and secondary insurance based on the release control signal of the primary and secondary insurance sent by the controller module.

[0047] The pressure application module is used to release the third-level safety according to the release control signal of the third-level safety sent by the controller module, and to apply voltage to each detonation module after releasing the third-level safety.

[0048] The detonation module is used to perform high-voltage charging based on the voltage applied by the pressure application module, and to feed back the high-voltage charging status signal to the controller module.

[0049] The controller module is also used to generate detonation control signals for each detonation module based on the received detonation command and high-voltage charging status signal.

[0050] The detonation module is also used to detonate the explosive based on the received detonation control signal.

[0051] When implementing, such as Figure 2 As shown, the detonation control signal includes a first detonation control signal and a second detonation control signal; the controller module includes an ARM and a CPLD;

[0052] The ARM is used to generate release control signals for primary and secondary fuses based on received external environment information; it is also used to generate the first detonation control signal for each detonation module based on received detonation command and high-voltage charging status signal.

[0053] The CPLD is used to generate a three-level safety release control signal based on the received external environment information; it is also used to generate a second detonation control signal for each detonation module based on the received detonation command and high-voltage charging status signal.

[0054] Specifically, the ARM and CPLD are bidirectionally connected for information sharing.

[0055] Specifically, the ARM receives external environmental information and makes a judgment. If the external environmental information meets the conditions for releasing the first or second level insurance, the first or second level insurance is released according to the set rules. The release conditions are that the received signal is greater than a set threshold and the receiving order and time window are the same as the set requirements. The set rules include immediate release and release according to a set delay.

[0056] For example, external environment information includes acceleration information, power supply information, and coded signal information input from other subsystems of the weapon system to the security system. This external environment information is detected and identified by external circuitry and then sent to the controller module.

[0057] In the ARM, the signals to be received for disabling the first and second level fuses, as well as the thresholds, order, and time windows of the signals, are set; in the CPLD, the signals to be received for disabling the third level fuse, as well as the thresholds, order, and time windows of the signals, are set; among them, the signal for disabling the first level fuse is acceleration information, the signal for disabling the second level fuse is power supply information, and the signal for disabling the third level fuse is an encoded signal.

[0058] If the ARM receives an acceleration information signal that is greater than a set threshold and is within a set time window, the first-level safety release condition is met. If the ARM then receives a power supply information signal that is greater than a set threshold and is within a set time window, the second-level safety release condition is met. Finally, if the CPLD receives an encoding signal that is greater than a set threshold and is within a set time window, the third-level safety release condition is met.

[0059] Understandably, the conditions for releasing insurance include a threshold, sequence, and time window. The threshold, as one of the criteria for releasing insurance, indicates that the system can release insurance if it exceeds a certain set value. Sequence refers to the fact that when the release signal is transmitted to the three insurance systems, not only the threshold but also the correct timing must be considered. Furthermore, a properly set time window ensures more rigorous signal judgment and a lower probability of accidental release of insurance from the security system.

[0060] Specifically, the controller module also acquires the protection release status signals of the primary and secondary fuses; the protection release status includes released and not released; after the system is powered on, the controller module completes a system self-test, including whether the external information interface is normal, whether the power supply is normal, and whether the tertiary fuse has been released. More specifically, the ARM and CPLD in the controller module store self-test programs, which automatically run to complete the self-test after power-on.

[0061] Furthermore, during the process of releasing the Level 3 insurance, the controller module also checks whether the release sequence is abnormal. If the Level 3 insurance is not released in the order of Level 1, Level 2, and Level 3, the release sequence is abnormal, and the system will be locked due to a fault.

[0062] For example, when the first level insurance is released and the second level insurance is being released, the conditions for the third level insurance are just met. At this time, the system can release the third level insurance, but the second level insurance is not completed. This situation is considered an abnormal release sequence.

[0063] It should be noted that when the ARM and CPLD receive the detonation command and the high-voltage charging status signal, if the high-voltage charging status signal is valid, the ARM and CPLD interact and simultaneously send detonation control signals to each detonation module according to the detonation command, thereby improving the synchronization of detonation of each detonation module. Furthermore, directional or omnidirectional detonation of each detonation module can be performed according to the detonation command. Furthermore, the controller module characterizes the system status based on the received feedback signals, reflecting the system's state.

[0064] When implementing, such as Figure 2 As shown, the electronic safety module includes a first static switch and a second static switch;

[0065] The drain of the first static switch serves as the first connection terminal of the electronic fuse module and is connected to the positive terminal of the power supply system; the source of the first static switch serves as the low-voltage positive power supply terminal of the electronic fuse module and is connected to the low-voltage positive power supply terminal of the pressure application module; the gate of the first static switch serves as the first signal receiving terminal of the electronic fuse module and receives the release control signal of the first-level fuse of the controller module.

[0066] The source of the second static switch serves as the second connection terminal of the electronic fuse module and is connected to the negative terminal of the power supply system; the drain of the second static switch serves as the low-voltage negative power supply terminal of the electronic fuse module and is connected to the low-voltage negative power supply terminal of the pressure application module; the gate of the second static switch serves as the second signal receiving terminal of the electronic fuse module and receives the deactivation control signal of the secondary fuse of the controller module.

[0067] Specifically, the first static switch and the second static switch are NMOS transistors.

[0068] When implementing, such as Figure 2 As shown, the pressure application module includes a dynamic switch and a step-up transformer;

[0069] The source of the dynamic switch serves as the low-voltage negative power supply terminal of the pressure application module, and the gate serves as the signal receiving terminal of the pressure application module, receiving the release control signal of the three-level fuse of the controller module; the drain of the dynamic switch is connected to the opposite terminal of the primary winding of the step-up transformer.

[0070] The same-name terminal of the primary winding of the step-up transformer serves as the low-voltage positive power supply terminal of the pressure application module; the same-name terminal of the secondary winding of the step-up transformer serves as the positive power supply terminal of the pressure application module, and the opposite-name terminal serves as the negative power supply terminal of the pressure application module.

[0071] Understandably, a step-up transformer is a typical flyback converter. Operating in flyback mode, it functions as an inductor when the primary winding is on and as a linear transformer when the primary winding is off, outputting high voltage from the secondary winding. A dynamic switch, activated by the trip fuse's trip control signal, turns the transformer on and off via the primary winding, generating a pulsed high voltage in the secondary winding.

[0072] Specifically, the release control signal for the three-level insurance is a high-voltage charging pulse signal.

[0073] Understandably, the electronic fuse module turns on the first and second static switches based on the received release control signals of the first and second fuses. At this time, the power system is connected to the pressure application module, the pressure application module is connected to the power supply, and the low voltage is converted to high voltage through the release control signal of the third fuse.

[0074] When implementing, such as Figure 2 As shown, the detonation module includes a rectifier diode, a high-voltage capacitor, an impact detonator, a high-voltage feedback circuit, and a detonation control circuit;

[0075] The positive terminal of the rectifier diode serves as the positive power supply terminal of the detonation module and is connected to the positive power supply terminal of the pressure application module; the negative terminal of the rectifier diode is connected to one end of the high-voltage capacitor; the other end of the high-voltage capacitor serves as the negative power supply terminal of the detonation module and is connected to the negative power supply terminal of the pressure application module.

[0076] One end of the high-voltage capacitor is also connected to one end of the impact detonator, and the other end of the high-voltage capacitor is also connected to the third input terminal of the detonation control circuit; the other end of the impact detonator is connected to the first output terminal of the detonation control circuit; the first input terminal of the detonation control circuit serves as the first input terminal of the detonation module, receiving the first detonation control signal from the controller module; the second input terminal of the detonation control circuit serves as the second input terminal of the detonation module, receiving the second detonation control signal from the controller module.

[0077] The first input terminal of the high-voltage feedback circuit is connected to one end of the high-voltage capacitor, and the second input terminal is connected to the other end of the high-voltage capacitor; the output terminal of the high-voltage feedback circuit serves as the high-voltage feedback terminal of the detonation module, outputting a high-voltage charging status signal.

[0078] In specific implementation, such as Figure 3 As shown, the detonation control circuit includes a seventh resistor R7, a tenth resistor R10, a first high-voltage switch Q1, a second high-voltage switch Q2, a first synchronization unit, and a second synchronization unit.

[0079] The drain of the first high-voltage switch Q1 serves as the third input terminal of the detonation control circuit, and the source terminal serves as the output terminal of the detonation control circuit.

[0080] The gate of the first high-voltage switch Q1 is connected to the power supply via the tenth resistor R10, and is also connected to the drain of the second high-voltage switch Q2 via the seventh resistor R7.

[0081] The source of the second high-voltage switch Q2 is connected to the output terminal of the first synchronization unit, and the input terminal of the first synchronization unit serves as the first input terminal of the detonation control circuit; the gate of the second high-voltage switch Q2 is connected to the output terminal of the second synchronization unit, and the input terminal of the second synchronization unit serves as the second input terminal of the detonation control circuit.

[0082] Specifically, the first synchronization unit includes a first high-speed isolation chip, a first high-speed gate driver, and a first RC filter circuit; the input terminal of the first high-speed isolation chip serves as the input terminal of the first synchronization unit, and its output terminal is connected to the input terminal of the first high-speed gate driver; the output terminal of the first high-speed gate driver is connected to the input terminal of the first RC filter circuit; and the output terminal of the first RC filter circuit serves as the output terminal of the first synchronization unit.

[0083] The second synchronization unit includes a second high-speed isolation chip, a second high-speed gate driver, and a second RC filter circuit; the input terminal of the second high-speed isolation chip serves as the input terminal of the second synchronization unit, and its output terminal is connected to the input terminal of the second high-speed gate driver; the output terminal of the second high-speed gate driver is connected to the input terminal of the second RC filter circuit; and the output terminal of the second RC filter circuit serves as the output terminal of the second synchronization unit.

[0084] Specifically, the high-speed isolation chip and high-speed gate driver in each detonation module use low-latency components with the same parameters from the same batch. The traces in the PCB layout are shortened as much as possible and kept consistent to further improve the synchronization of the detonation of each detonation module.

[0085] More specifically, the first RC filter circuit includes an eighth resistor R8 and a fourth capacitor C4; one end of the eighth resistor R8 is connected to one end of the fourth capacitor C4 and serves as the input terminal of the first RC filter circuit; the other end of the eighth resistor R8 serves as the output terminal of the first RC filter circuit; and the other end of the fourth capacitor C4 is grounded.

[0086] The second RC filter circuit includes a ninth resistor R9 and a fifth capacitor C5; one end of the ninth resistor R9 is connected to one end of the fifth capacitor C5 and serves as the input terminal of the second RC filter circuit; the other end of the ninth resistor R9 serves as the output terminal of the second RC filter circuit; and the other end of the fifth capacitor C5 is grounded.

[0087] More specifically, the first high-voltage switch Q1 is a PMOS transistor, and the second high-voltage switch Q2 is an NMOS transistor.

[0088] Specifically, the second high-voltage switch Q2 can only be turned on when the first detonation control signal issued by the ARM is high and the second detonation control signal issued by the CPLD is low, thereby controlling the first high-voltage switch Q1 to turn on and complete the detonation.

[0089] Understandably, the detonation module employs a redundant, error-proof, and dual-safety design for the detonation control signal. This means that two detonation control signals from both the ARM and CPLD controllers work together to control the detonation, preventing control circuit malfunctions and improving the system's safety during startup, power outages, and in harsh electromagnetic environments. Specifically...

[0090] In specific implementation, such as Figure 4 As shown, the high-voltage feedback circuit includes a sampling circuit and a feedback circuit;

[0091] The first input terminal of the sampling circuit serves as the first input terminal of the high-voltage feedback circuit, and the second input terminal serves as the second input terminal of the high-voltage feedback circuit; the output terminal of the sampling circuit is connected to the input terminal of the feedback circuit; the output terminal of the feedback circuit serves as the output terminal of the high-voltage feedback circuit.

[0092] In a specific implementation, the feedback circuit includes a magnetic bead L1, a first comparator, a second comparator, a first resistor R1, a second resistor R2, a third resistor R3, a sixth resistor R6, a second capacitor C2, and a third capacitor C3.

[0093] One end of the magnetic bead L1 serves as the input terminal of the feedback circuit, and the other end is connected to the non-inverting input terminal of the first comparator; the other end of the magnetic bead L1 is also grounded through the second capacitor C2.

[0094] The inverting input terminal of the first comparator is connected to its output terminal; the output terminal of the first comparator is connected to the non-inverting input terminal of the second comparator via a sixth resistor R6.

[0095] The non-inverting input of the second comparator is grounded via a third capacitor C3; the inverting input of the second comparator is grounded via a first resistor R1 and a second resistor R2 connected in series; the inverting input of the second comparator is also connected to the power supply via a third resistor R3; the output of the second comparator serves as the output of the feedback circuit.

[0096] The power supply terminals of the first and second comparators are connected to the power supply, and the grounding terminals are grounded.

[0097] Understandably, since the sampling voltage of the sampling circuit carries a large number of harmonic components, and the sampling voltage is directly connected to the high-voltage circuit, it will introduce a large amount of spike interference. Therefore, it is necessary to electrically isolate the voltage divider signal from the low-voltage circuit. The ferrite bead L1 and the second capacitor C2 constitute a filter circuit to effectively filter out the harmonic components and spike interference of the sampling signal. After further isolation processing by a voltage follower formed by the first comparator and an RC filter, the signal is input to the second comparator. The negative input of the second comparator is the threshold voltage signal. When the sampling voltage does not reach the threshold, the voltage comparator outputs a low level; when the sampling voltage is not less than the threshold, the voltage comparator outputs a high level. The feedback circuit binarizes the charging process of the high-voltage capacitor, using high and low levels to represent the charging completion and incomplete charging states. This processing speed is fast and the real-time performance is good.

[0098] Specifically, the sampling circuit includes a fourth resistor and a fifth resistor;

[0099] One end of the fourth resistor serves as the first input terminal of the sampling circuit, and the other end is connected to one end of the fifth resistor, which also serves as the output terminal of the sampling circuit; the other end of the fifth resistor serves as the second input terminal of the sampling circuit.

[0100] It is understandable that the sampling voltage of the sampling circuit has a linear relationship with the voltage of the high-voltage capacitor. The sampling circuit is simple and reliable. According to the fuze design standard, the energy storage component of the electronic fuze should have a self-discharge function. The sampling circuit forms a discharge circuit for the high-voltage capacitor. When the inline safety actuator multi-point detonation system fails to perform the detonation function during testing or in case of an accident, the voltage divider resistor sampling circuit can release the energy stored in the high-voltage capacitor, restoring the inline safety actuator multi-point detonation system to a safe state, preventing accidental detonation, and improving reliability and safety.

[0101] Preferably, the impact detonator is an explosive foil initiator, mainly composed of a reflector, a bridge foil, a flyer material, an acceleration chamber, and a high explosive charge. Its key to activation is high voltage and high current. Compared with conventional electric detonators, the impact detonator uses insensitive ignition powder and has the characteristics of high safety, reliability, and miniaturization.

[0102] Compared with existing technologies, this embodiment provides a multi-point synchronous detonation system for a linear safety actuator. It comprises a controller module that generates release control signals for primary, secondary, and tertiary fuses based on collected external environmental information, and detonation control signals for each detonation module based on received detonation commands and high-voltage charging status signals. It also includes an electronic fuse module that releases the primary and secondary fuses based on the received release control signals, a tertiary fuse module that releases the tertiary fuse based on the received release control signal, applies voltage to each detonation module after the tertiary fuse is released, and multiple detonation modules that perform high-voltage charging based on the voltage applied by the pressure application modules, feed back high-voltage charging status signals, and detonate based on the received detonation control signals. The fully electronic release of fuses ensures high safety and reliability for the multi-point synchronous detonation system; effectively reduces detonation delay between multiple detonation points, and provides good synchronization; it overcomes the shortcomings of conventional mechanical multi-point detonation systems in terms of size and weight, and has good testability; furthermore, the controller module adopts an ARM+CPLD configuration to prevent common-cause failure problems.

[0103] Those skilled in the art will understand that all or part of the processes of the methods described in the above embodiments can be implemented by a computer program instructing related hardware, and the program can be stored in a computer-readable storage medium. The computer-readable storage medium may be a disk, optical disk, read-only memory, or random access memory, etc.

[0104] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A multi-point synchronous detonation system for a linear safety actuator, characterized in that, It includes a controller module, an electronic safety module, a pressure application module, and multiple detonation modules; The controller module is used to generate release control signals for Level 1, Level 2, and Level 3 insurance based on the collected external environment information; The electronic insurance module is used to release the primary and secondary insurance based on the release control signal of the primary and secondary insurance sent by the controller module. The pressure application module is used to release the third-level safety according to the release control signal of the third-level safety sent by the controller module, and to apply voltage to each detonation module after releasing the third-level safety. The detonation module is used to perform high-voltage charging based on the voltage applied by the pressure application module, and to feed back the high-voltage charging status signal to the controller module. The controller module is also used to generate detonation control signals for each detonation module based on the received detonation command and high-voltage charging status signal. The detonation module is also used to detonate the explosive based on the received detonation control signal.

2. The inline safety actuator multi-point synchronous detonation system according to claim 1, characterized in that, The detonation control signal includes a first detonation control signal and a second detonation control signal; the controller module includes an ARM and a CPLD. The ARM is used to generate release control signals for primary and secondary fuses based on received external environment information; it is also used to generate the first detonation control signal for each detonation module based on received detonation command and high-voltage charging status signal. The CPLD is used to generate a three-level safety release control signal based on the received external environment information; it is also used to generate a second detonation control signal for each detonation module based on the received detonation command and high-voltage charging status signal.

3. The inline safety actuator multi-point synchronous detonation system according to claim 2, characterized in that, The detonation module includes a rectifier diode, a high-voltage capacitor, an impact detonator, a high-voltage feedback circuit, and a detonation control circuit. The positive terminal of the rectifier diode serves as the positive power supply terminal of the detonation module and is connected to the positive power supply terminal of the pressure application module; the negative terminal of the rectifier diode is connected to one end of the high-voltage capacitor; the other end of the high-voltage capacitor serves as the negative power supply terminal of the detonation module and is connected to the negative power supply terminal of the pressure application module. One end of the high-voltage capacitor is also connected to one end of the impact detonator, and the other end of the high-voltage capacitor is also connected to the third input terminal of the detonation control circuit; the other end of the impact detonator is connected to the first output terminal of the detonation control circuit; the first input terminal of the detonation control circuit serves as the first input terminal of the detonation module, receiving the first detonation control signal from the controller module; the second input terminal of the detonation control circuit serves as the second input terminal of the detonation module, receiving the second detonation control signal from the controller module. The first input terminal of the high-voltage feedback circuit is connected to one end of the high-voltage capacitor, and the second input terminal is connected to the other end of the high-voltage capacitor; the output terminal of the high-voltage feedback circuit serves as the high-voltage feedback terminal of the detonation module, outputting a high-voltage charging status signal.

4. The inline safety actuator multi-point synchronous initiation system according to claim 3, characterized in that, The detonation control circuit includes a seventh resistor, a tenth resistor, a first high-voltage switch, a second high-voltage switch, a first synchronization unit, and a second synchronization unit. The drain of the first high-voltage switch serves as the third input terminal of the detonation control circuit, and the source terminal serves as the output terminal of the detonation control circuit. The gate of the first high-voltage switch is connected to the power supply after passing through the tenth resistor, and is also connected to the drain of the second high-voltage switch after passing through the seventh resistor. The source of the second high-voltage switch is connected to the output terminal of the first synchronization unit, and the input terminal of the first synchronization unit serves as the first input terminal of the detonation control circuit; the gate of the second high-voltage switch is connected to the output terminal of the second synchronization unit, and the input terminal of the second synchronization unit serves as the second input terminal of the detonation control circuit.

5. The inline safety actuator multi-point synchronous detonation system according to claim 4, characterized in that, The first synchronization unit includes a first high-speed isolation chip, a first high-speed gate driver, and a first RC filter circuit; the input terminal of the first high-speed isolation chip serves as the input terminal of the first synchronization unit, and the output terminal is connected to the input terminal of the first high-speed gate driver; the output terminal of the first high-speed gate driver is connected to the input terminal of the first RC filter circuit; the output terminal of the first RC filter circuit serves as the output terminal of the first synchronization unit. The second synchronization unit includes a second high-speed isolation chip, a second high-speed gate driver, and a second RC filter circuit. The input terminal of the second high-speed isolation chip serves as the input terminal of the second synchronization unit, and its output terminal is connected to the input terminal of the second high-speed gate driver; the output terminal of the second high-speed gate driver is connected to the input terminal of the second RC filter circuit; and the output terminal of the second RC filter circuit serves as the output terminal of the second synchronization unit.

6. The inline safety actuator multi-point synchronous initiation system according to claim 5, characterized in that, The first RC filter circuit includes an eighth resistor and a fourth capacitor; one end of the eighth resistor is connected to one end of the fourth capacitor and serves as the input terminal of the first RC filter circuit; the other end of the eighth resistor serves as the output terminal of the first RC filter circuit; and the other end of the fourth capacitor is grounded. The second RC filter circuit includes a ninth resistor and a fifth capacitor; one end of the ninth resistor is connected to one end of the fifth capacitor and serves as the input terminal of the second RC filter circuit. The other end of the ninth resistor serves as the output terminal of the second RC filter circuit; the other end of the fifth capacitor is grounded.

7. The inline safety actuator multi-point synchronous detonation system according to claim 3, characterized in that, The high-voltage feedback circuit includes a sampling circuit and a feedback circuit; The first input terminal of the sampling circuit serves as the first input terminal of the high-voltage feedback circuit, and the second input terminal serves as the second input terminal of the high-voltage feedback circuit; the output terminal of the sampling circuit is connected to the input terminal of the feedback circuit; the output terminal of the feedback circuit serves as the output terminal of the high-voltage feedback circuit.

8. The inline safety actuator multi-point synchronous detonation system according to claim 7, characterized in that, The feedback circuit includes a ferrite bead, a first comparator, a second comparator, a first resistor, a second resistor, a third resistor, a sixth resistor, a second capacitor, and a third capacitor; One end of the ferrite bead serves as the input terminal of the feedback circuit, and the other end is connected to the non-inverting input terminal of the first comparator; the other end of the ferrite bead is also grounded after passing through a second capacitor. The inverting input terminal of the first comparator is connected to its output terminal; the output terminal of the first comparator is connected to the non-inverting input terminal of the second comparator via a sixth resistor. The non-inverting input of the second comparator is also grounded via a third capacitor; The inverting input of the second comparator is grounded after being connected in series with a first resistor and a second resistor. The inverting input of the second comparator is also connected to the power supply after being connected in series with a third resistor. The output of the second comparator serves as the output of the feedback circuit.

9. The inline safety actuator multi-point synchronous detonation system according to claim 7, characterized in that, The sampling circuit includes a fourth resistor and a fifth resistor; One end of the fourth resistor serves as the first input terminal of the sampling circuit, and the other end is connected to one end of the fifth resistor, which also serves as the output terminal of the sampling circuit; the other end of the fifth resistor serves as the second input terminal of the sampling circuit.

10. The inline safety actuator multi-point synchronous detonation system according to claim 4, characterized in that, The first high-voltage switch is a PMOS transistor, and the second high-voltage switch is an NMOS transistor.

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