CN110953945A - Electronic safety control system based on MCU - Google Patents

Abstract

The invention discloses an electronic safety control system based on an MCU (microprogrammed control Unit), which comprises a target detector, wherein the signal output end of the target detector is connected with the signal input end of an initiation signal data processor, the signal output end of the initiation signal data processor is connected with the signal input end of a high-voltage initiation unit, a plurality of high-voltage initiation units are arranged, the signal output end of each high-voltage initiation unit is connected with an impact sheet detonator detonation transfer sequence, the signal input end of each high-voltage initiation unit is also connected with an electronic safety system, the input end of each electronic safety system is connected with environmental information, the electronic safety systems are provided with two groups, a signal processing detection interface circuit is connected onto each electronic safety system, and the impact sheet detonator detonation transfer sequences are connected to control the operation of fighting equipment.

Description

Electronic safety control system based on MCU

Technical Field

The invention relates to a control circuit, in particular to a detonation control circuit.

Background

In the weapon fuse system, a fuse electronic security disarm (ESAD) system built by striking a chip detonator (Slapper), which is also called efi (exploding foil initiator), has attracted general attention in the fuse world at home and abroad since the first publication in the united states of the 20 th century 70. 2004 at 48 hours of fuze annual meeting introduced a high performance low energy impact sheet detonator technology for directional warheads and a controlled initiation system; at the 49 th annual meeting of the American fuze in 2005, the American air force research laboratory reported a multi-strike patch detonator directed detonation array control system in the American air force fuze technical overview (AirForceFuzeTechnologyOverview). At present, conventional initiating explosive devices such as an explosion logic network and the like are generally adopted by a domestic directional multipoint initiation system as an initiating element, and because a large number of conventional initiating explosive devices are used, the initiating explosive devices need to be provided with independent mechanical safety devices, and the independent safety devices cannot be checked before being installed in a warhead due to mechanical movement of the independent safety devices, so that the safety and the reliability of the warhead are reduced, and the weight and the volume of the warhead are increased.

Disclosure of Invention

The invention aims to provide an electronic safety control system based on an MCU (microprogrammed control Unit), which improves the control precision and reduces the chip cost.

The purpose of the invention is realized as follows: the electronic safety control system comprises a target detector, wherein the signal output end of the target detector is connected with the signal input end of a detonation signal data processor, the signal output end of the detonation signal data processor is connected with the signal input end of a high-pressure detonation unit, a plurality of high-pressure detonation units are arranged, the signal output end of each high-pressure detonation unit is connected with an impact sheet detonator detonation transfer sequence, the signal input end of each high-pressure detonation unit is further connected with an electronic safety system, the input end of each electronic safety system is connected with environmental information, the electronic safety systems are provided with two groups, the electronic safety systems are connected with signal processing detection interface circuits, and the impact sheet detonator detonation transfer sequences are connected to control the fighting equipment to work.

As a further limitation of the invention, 2 EPM7128SLC84-10 programmable logic devices are selected as the main control chip.

As a further limitation of the invention, the programmable logic device is selected from the ALTRA MAX7000 series.

When the invention works, the invention carries out double-path redundancy design on an electronic safety system (ESA) and respectively controls 8 paths of high-voltage initiation units, and each path of high-voltage initiation unit is connected with a group of impact piece detonator detonation transfer sequences. When the weapon system enters a target area, environmental information output by the guidance system prompts an electronic safety disarming system (ESA) to completely disarm, a high-voltage conversion circuit starts to work and charges a high-voltage capacitor, the fuse is in a pre-explosion state, when a target detector TDD provides detected self-standard direction and distance information for an initiation signal data processor to process and encode, an initiation mode is determined, an initiation instruction is output to initiate an impact sheet detonator, an initiation signal is transmitted to a warhead through an impact sheet detonator transfer sequence, and the warhead is initiated timely. The environment information processing circuit is mainly used for processing various environment information in the missile launching period and sequentially sending the environment information to the electronic safety system, and the electronic safety system circuit carries out insurance relief decision on a plurality of environment signals with certain characteristics generated after launching and state conversion instructions of the guidance computer on the basis of environment information identification by means of strong state control capacity of the control chip. The arming logic of the electronic safety system is based on a plurality of environment excitation identification decisions, generally, a power supply is directly extracted from a missile power supply system, after an arming program is started, a fuze safety and arming circuit identifies the threshold value, the duration time and the sequence of each environment signal of different stages of missile flight by using the identification principle of 'threshold value + time window + sequence', when the electronic safety system confirms that the environment signals are correct, the corresponding arming of each stage is correspondingly disarmed, and the information of the arming state is fed back to a guidance computer to ensure the execution of lower-stage tasks. Once some signal is abnormal or the time sequence between the environmental signals is disordered, the fuze system is immediately switched into a fail-safe state, the lock-up and fail-safe program is locked, and the fuze system is switched into a fail-safe mode such as misfire or self-destruction. When the safety and safety relieving circuit is completely relieved, the high-voltage detonation unit circuit starts to act, the high-voltage converter outputs a high-voltage alternating-current signal, the high-voltage alternating-current signal is rectified and then continuously charges the high-voltage capacitor, the voltage of the high-voltage capacitor is always maintained within the minimum voltage required by one hundred percent of detonation of the impact piece detonator and the upper and lower allowable error limits of the minimum voltage, and the fuze system is in a standby state. The signal processing circuit is mainly used for processing the initiation orientation information and coding initiation instructions, when the initiation orientation of the warhead is determined, the initiation signal data processor codes initiation signals and sends the initiation signals to the safety and safety relief system, and after decoding confirmation, corresponding orientation initiation instructions are output. The signal detection interface circuit is mainly used for detecting a system power signal, a system deputy state signal, an input signal and an output signal, and is also used as an interface of a telemetering signal when the missile is in a flight test.

Drawings

Fig. 1 is a control schematic block diagram of the present invention.

Detailed Description

The MCU-based electronic safety control system shown in FIG. 1 comprises a target detector, a signal output end of the target detector is connected with a signal input end of an initiation signal data processor, a signal output end of the initiation signal data processor is connected with a signal input end of a high-voltage initiation unit, a plurality of high-voltage initiation units are arranged, a signal output end of each high-voltage initiation unit is connected with an impact sheet detonator explosion transfer sequence, the signal input end of the high-pressure detonating unit is also connected with an electronic safety system, the input end of the electronic safety system is connected with environmental information, the electronic safety system is provided with two groups, the electronic safety system is connected with a signal processing and detecting interface circuit, the percussion sheet detonator explosion transfer sequence is connected with a control combat device to work, the main control chip selects 2 EPM7128SLC84-10 programmable logic devices, the programmable logic device is selected from ALTRA MAX7000 series.

When the invention works, the invention carries out double-path redundancy design on an electronic safety system (ESA) and respectively controls 8 paths of high-voltage initiation units, and each path of high-voltage initiation unit is connected with a group of impact piece detonator detonation transfer sequences. When the weapon system enters a target area, environmental information output by the guidance system prompts an electronic safety disarming system (ESA) to completely disarm, a high-voltage conversion circuit starts to work and charges a high-voltage capacitor, the fuse is in a pre-explosion state, when a target detector TDD provides detected self-standard direction and distance information for an initiation signal data processor to process and encode, an initiation mode is determined, an initiation instruction is output to initiate an impact sheet detonator, an initiation signal is transmitted to a warhead through an impact sheet detonator transfer sequence, and the warhead is initiated timely. The environment information processing circuit is mainly used for processing various environment information in the missile launching period and sequentially sending the environment information to the electronic safety system, and the electronic safety system circuit carries out insurance relief decision on a plurality of environment signals with certain characteristics generated after launching and state conversion instructions of the guidance computer on the basis of environment information identification by means of strong state control capacity of the control chip. The arming logic of the electronic safety system is based on a plurality of environment excitation identification decisions, generally, a power supply is directly extracted from a missile power supply system, after an arming program is started, a fuze safety and arming circuit identifies the threshold value, the duration time and the sequence of each environment signal of different stages of missile flight by using the identification principle of 'threshold value + time window + sequence', when the electronic safety system confirms that the environment signals are correct, the corresponding arming of each stage is correspondingly disarmed, and the information of the arming state is fed back to a guidance computer to ensure the execution of lower-stage tasks. Once some signal is abnormal or the time sequence between the environmental signals is disordered, the fuze system is immediately switched into a fail-safe state, the lock-up and fail-safe program is locked, and the fuze system is switched into a fail-safe mode such as misfire or self-destruction. When the safety and safety relieving circuit is completely relieved, the high-voltage detonation unit circuit starts to act, the high-voltage converter outputs a high-voltage alternating-current signal, the high-voltage alternating-current signal is rectified and then continuously charges the high-voltage capacitor, the voltage of the high-voltage capacitor is always maintained within the minimum voltage required by one hundred percent of detonation of the impact piece detonator and the upper and lower allowable error limits of the minimum voltage, and the fuze system is in a standby state. The signal processing circuit is mainly used for processing the initiation orientation information and coding initiation instructions, when the initiation orientation of the warhead is determined, the initiation signal data processor codes initiation signals and sends the initiation signals to the safety and safety relief system, and after decoding confirmation, corresponding orientation initiation instructions are output. The signal detection interface circuit is mainly used for detecting a system power signal, a system deputy state signal, an input signal and an output signal, and is also used as an interface of a telemetering signal when the missile is in a flight test.

The present invention is not limited to the above-mentioned embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some technical features without creative efforts according to the disclosed technical contents, and these substitutions and modifications are all within the protection scope of the present invention.

Claims (3)

1. The electronic safety control system based on the MCU is characterized by comprising a target detector, wherein the signal output end of the target detector is connected with the signal input end of a detonation signal data processor, the signal output end of the detonation signal data processor is connected with the signal input end of a high-pressure detonation unit, a plurality of high-pressure detonation units are arranged, the signal output end of each high-pressure detonation unit is connected with a detonation transfer sequence of an impact sheet detonator, the signal input end of each high-pressure detonation unit is further connected with an electronic safety system, the input end of each electronic safety system is connected with environmental information, the electronic safety systems are provided with two groups, a signal processing detection interface circuit is connected onto each electronic safety system, and the detonation transfer sequences of the impact sheet detonator are connected to control the operation of.

2. The MCU-based electronic safety control system of claim 1, wherein the main control chip is 2 EPM7128SLC84-10 programmable logic devices.

3. An MCU-based electronic safety control system according to claim 2, wherein the programmable logic device is of the ALTRA MAX7000 series.

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