CN203444275U - Detonation control circuit based on 1553B bus - Google Patents

Abstract

Provided is a detonation control circuit based on a 1553B bus. A relay control circuit receives and processes physical signals on a separating switch and an overload switch which are arranged on a warhead. Two stages of environmental force insurance removing are completed on a warhead detonator. After a missile control system sends an insurance removing instruction via 1553B interface chip, a CPLD chip and a DSP chip in turn, instruction insurance removing is completed towards the warhead by the relay control circuit through control. A warhead recognition circuit acquires warhead combat part type state information which is sent to the DSP chip, the CPLD chip and the 1553B interface chip in turn and then sent to the missile control system to perform warhead recognition. According to warhead combat part type state information, the missile control system sends a corresponding detonation instruction via the 1553B interface chip, the CPLD chip and the DSP chip in turn and controls a detonation circuit to send a detonation signal so that detonation operation is completed towards the detonator. The detonation control circuit based on the 1553B bus is extensible and high in reliability so that generalization requirements of different warhead combat parts can be met.

Description

A kind of guiding detonating controlling circuit based on 1553B bus

Technical field

The utility model belongs to guiding detonating controlling field.

Background technology

Guiding detonating controlling circuit is the core circuit of bullet, not only for the safety of warhead in duties processing, ballistic flight and long-term storage provides safeguard; Mainly bear and missile control system communication, and Missions stable, that reliably ignite warhead.

Acting on armament systems " a platform multi-load " inwardly, bullet need to strike target and adopt different warheads difference, thereby the universalization of guiding detonating controlling circuit and reliability are proposed to very high request; In traditional guiding detonating controlling circuit, main electromagnetism and the solid-state relay of relying on, realize whole logic controls and with the interface of control system, due to the not modifiable limitation of hardware circuit, interface circuit is complicated, and interface signal is various, binding mode is single, can only carry out the instruction that missile control system is sent according to the curing agreement of agreement, not possess extensibility.

Utility model content

The technical matters that the utility model solves is: overcome the deficiencies in the prior art, a kind of guiding detonating controlling circuit based on 1553B bus is provided, possess interface and simplify, be easy to unification, extensibility, feature that reliability is high, can meet the universalization demand of different bullet warhead.

The technical solution of the utility model is: a kind of guiding detonating controlling circuit based on 1553B bus, comprises communication control circuit and ignite executive circuit; Wherein communication control circuit comprises dsp chip, CPLD chip, 1553B interface chip; Ignite executive circuit and comprise bullet identification circuit, control relay circuit, detonation circuit;

Control relay circuit receives and processes separating switch on bullet and the physical signalling of overload switch, nosefuze is completed to two-stage environmental forces solution to be protected, missile control system is sent arm command to 1553B interface chip, arm command completes after level conversion through CPLD chip again, deliver to dsp chip, dsp chip is accepted arm command, and pilot relay control circuit completes instruction solution to nosefuze and protects; Bullet identification circuit gathers bullet warhead kind status information, deliver to dsp chip and complete decoding, through CPLD chip, complete after level conversion again, by 1553B interface chip, deliver to missile control system and carry out bullet identification, missile control system is according to bullet warhead kind status information, send corresponding initiation command, be sent to 1553B interface chip, through CPLD chip, complete after level conversion again, deliver to dsp chip, dsp chip is controlled detonation circuit and is sent detonator signal, and fuse is completed and ignites operation.

The utility model advantage is compared with prior art:

This guiding detonating controlling circuit can carry out in real time with missile control system, stablizes, 1553B bus communication reliably, utilize the dynamic release of signal data bus, address bus, can respond flexibly all kinds of bus commands that control system is sent, interface is convenient to unified, possess good communication extended capability simultaneously, greatly broken away from the not modifiable limitation of hardware circuit.

Warhead recognition function has greatly promoted the universalization of guiding detonating controlling circuit, do not changing under the prerequisite of hardware and software, by differentiating warhead code word, each self-correspondingly flies to control software branch can to select different warheads, can be good at meeting the different bullet warhead operational need of " a platform multi-load ".

The working environment of guiding detonating controlling circuit is very complicated, can face various electromagnetic interference (EMI), and the utility model 1553B bus adopts two Redundancy Design, obtains redundancy fault-tolerant ability and fault isolation, thereby promotes the anti-electromagnetic interference performance of this guiding detonating controlling circuit.

Accompanying drawing explanation

Fig. 1 is guiding detonating controlling circuit function block diagram.

Fig. 2 is bullet identification circuit figure.

Fig. 3 is control relay circuit figure.

Fig. 4 is detonation circuit figure.

Embodiment

This guiding detonating controlling circuit is selected TMS320F2812DSP chip, to 1553B interface chip, BU-61580 controls, adopt two-way coupling transformer, by twisted-pair shielded wire signal transmission, the 1553B bus communication of realization and missile control system, mainly completes the communication of the instructions such as warhead inquiry, solution guarantor, ignition.

Owing to using first TMS320F2812DSP chip and 1553B bussing technique, how to complete the initial configuration of dsp chip to 61580 chips, and complete transceiving data district in the mapping of DSP storage data field according to 1553B bus protocol, be the research of technique content that in this guiding detonating controlling circuit, DSP flies to control software.

Initial configuration to 1553B interface chip 61580 is as follows:

(1) docking port chip is software reset;

(2) use enhancement mode;

(3) initial interrupt status register;

(4) load the value of behaviour area pointer;

(5) initial active stack area;

(6) initialization behaviour area look-up table;

(7) initial configuration register 2;

(8) initial configuration register 3;

(9) initial configuration register 4;

(10) initial configuration register 5;

(11) initial illegal command table;

(12) the busy position of an initialization look-up table;

(13) initialization selection mode code interrupt table;

(14) the initialization of data block;

(15) initial configuration register 1.

Adopt EPM7128-144-7CPLD chip, not only realize level conversion and corresponding logic control between dsp chip and 61580 interface chips, also utilize its FPGA (Field Programmable Gate Array) control characteristic, the relay that dsp chip GPIO mouth is controlled implements to power on blockade, guarantees not have misoperation before DSP steady operation.

As shown in Figure 2, bullet identification circuit comprises resistance R 12～resistance R 19, optical coupling isolator V11, capacitor C 17; Bullet identification circuit gathers bullet warhead kind status signal by interface cable, this signal is comprised of DTSB1～DTSB4, be 28V signal, through light-coupled isolation chip, V11 converts 3.3V signal to, be sent on the corresponding GPIO mouth of DSP, the warhead inquiry that dsp software response missile control system is sent is interrupted, and the 1553B bus communication module ，Jiang warhead kind state code word that operation flies to control in software is put into the corresponding subaddressing in bullet control system 1553B bus.Missile control system is carried out after decoding bullet identification code word, according to different warhead kinds, by 1553B bus, exports corresponding initiation command.

As shown in Figure 3, control relay circuit is comprised of separation circuit, overload circuit, arming circuit.Wherein separation circuit is comprised of electromagnetic relay K101～electromagnetic relay K103, and overload circuit is comprised of electromagnetic relay K105～electromagnetic relay K107, and arming circuit is comprised of electromagnetic relay K121～electromagnetic relay K122.Bullet separating switch is closed, and control relay circuit receives separation signal, and six pairs of normally opened contact actions of electromagnetic relay K101～electromagnetic relay K103 action, remove the insurance of the nosefuze first order, fuse is implemented to minute dissociation and protect.Bullet overload switch is connected in regulation overload values, and control relay circuit receives overload signal, six pairs of normally opened contact actions of electromagnetic relay K105～electromagnetic relay K107, and the insurance of the releasing nosefuze second level, implements overload to fuse and separates guarantor.Bullet control system is sent 1553B arm command in specified altitude assignment, and control relay circuit receives arm command, and two pairs of normally opened contact actions of electromagnetic relay K121 and electromagnetic relay K122, implement instruction solution to fuse and protect.

As shown in Figure 4, detonation circuit is comprised of solid-state relay N1～solid-state relay N4, resistance R 82-resistance R 85, resistance R 67, resistance R 68, wherein solid-state relay N1 connects respectively with solid-state relay N4 with solid-state relay N2, solid-state relay N3, two groups of series connection adopt output in parallel again, dsp chip receives the 1553B initiation command that bullet control system is sent, by GPIO mouth set corresponding to detonation circuit, the work of control detonation circuit, parallel output two-way detonator signal, completes and ignites operation nosefuze.

The content not being described in detail in the utility model instructions belongs to professional and technical personnel in the field's known technology.

Claims (1)

1. the guiding detonating controlling circuit based on 1553B bus, is characterized in that: comprise communication control circuit and ignite executive circuit; Wherein communication control circuit comprises dsp chip, CPLD chip, 1553B interface chip; Ignite executive circuit and comprise bullet identification circuit, control relay circuit, detonation circuit;

Control relay circuit receives and processes separating switch on bullet and the physical signalling of overload switch, nosefuze is completed to two-stage environmental forces solution to be protected, missile control system is sent arm command to 1553B interface chip, arm command completes after level conversion through CPLD chip again, deliver to dsp chip, dsp chip is accepted arm command, and pilot relay control circuit completes instruction solution to nosefuze and protects; Bullet identification circuit gathers bullet warhead kind status information, deliver to dsp chip and complete decoding, through CPLD chip, complete after level conversion again, by 1553B interface chip, deliver to missile control system and carry out bullet identification, missile control system is according to bullet warhead kind status information, send corresponding initiation command, be sent to 1553B interface chip, through CPLD chip, complete after level conversion again, deliver to dsp chip, dsp chip is controlled detonation circuit and is sent detonator signal, and fuse is completed and ignites operation.

Images