CN103326313A - Intelligent initiating explosive device ignition controller - Google Patents
Intelligent initiating explosive device ignition controller Download PDFInfo
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- CN103326313A CN103326313A CN 201310263144 CN201310263144A CN103326313A CN 103326313 A CN103326313 A CN 103326313A CN 201310263144 CN201310263144 CN 201310263144 CN 201310263144 A CN201310263144 A CN 201310263144A CN 103326313 A CN103326313 A CN 103326313A
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Abstract
The invention discloses an intelligent initiating explosive device ignition controller which is mainly composed of a casing and an ignition control circuit arranged in the casing. The ignition control circuit comprises a power circuit, a bus isolation receiving and sending circuit, at least one emergency control circuit, at least one state output circuit, an isolation driving circuit, an ignition current detecting circuit, a main control circuit, an ignition current storage circuit and an ignition output circuit. The main control circuit receives a control order sent by an upper computer and/or an emergency control end, and then corresponds to control to be connected or disconnected with the ignition output circuit. After the ignition output circuit is connected, the ignition current detecting circuit senses current variation, and the main control circuit processes current variation and stores the variation in an ignition current storage device. When the current variation excesses an over-current protection threshold which is preset, over-current protection is conducted, and when the current variation excesses a short-current protection threshold, the ignition output circuit is cut off within a certain period of time. The intelligent initiating explosive device ignition controller is high in reliability and capable of meeting the requirement of device testability.
Description
Technical field
A kind of ignition controller of the present invention is specifically related to a kind of intelligent priming system ignition controller.
Background technology
Priming system (initiating explosive devices), claim again fiery tool, that gunpowder or explosive are housed, be subjected to produce burning or blast behind the environmental stimuli, with the gunpowder that ignites, ignition charge or do the disposable components and parts of mechanical power and the general name of device, its extensive use in the military engineerings such as strategic missile, nuclear weapon and aerospace system.Existing priming system IGNITION CONTROL generally adopts electromagnetic relay and solid state relay to finish, and can not monitor initial firing current, when short trouble appears in priming system, it can't be separated from ignition system, affects the dependability of whole ignition system; Conventional electromagnetic relay and solid state relay do not have transfer of data, self-checking function simultaneously, is difficult to satisfy the equipment Test requirement.
Summary of the invention
Technical problem to be solved by this invention provide a kind of reliability high, and can satisfy the intelligent priming system ignition controller of device to test requirement.
For addressing the above problem, the intelligent priming system ignition controller that the present invention is designed mainly is comprised of housing and the ignition control circuit that is arranged in the housing; Wherein ignition control circuit comprises power circuit, Bus isolation transmission circuit, at least one emergency control circuit, at least one State-output circuit, isolated drive circuit, initial firing current testing circuit, governor circuit, initial firing current memory circuit and igniting output circuit; The input of power circuit links to each other with bias supply, the first output head anode of power circuit links to each other with the working power port of governor circuit, the first negative pole of output end links to each other with the power cathode of governor circuit, the second output head anode of power circuit links to each other with the positive source of isolated drive circuit, and the second negative pole of output end links to each other with the power cathode of isolated drive circuit; One end of Bus isolation transmission circuit links to each other with host computer through data/address bus, and the other end of Bus isolation transmission circuit links to each other with the transmitting-receiving port of governor circuit; The input access one emergent control signal of connecting of each emergency control circuit, the output of each emergency control circuit links to each other with an I/O port of governor circuit; The input of each State-output circuit links to each other with an I/O port of governor circuit, and the output of each State-output circuit is respectively sent a state output signal; An I/O port of governor circuit links to each other with the input of isolated drive circuit, and the output of isolated drive circuit connects the input of igniting output circuit; The output head anode tie point ignition source of igniting output circuit is anodal, and the negative pole of output end of igniting output circuit is through priming system load tie point ignition source negative pole; The input of initial firing current testing circuit is positioned at the igniting negative pole of output end place of igniting output circuit, gathers the output current of igniting output circuit, and the output of initial firing current testing circuit links to each other with the AD port of governor circuit; The initial firing current memory circuit is connected on the SPI mouth of governor circuit.
In the such scheme, described emergency control circuit has 2 the tunnel; The input access first emergent control signal of first via emergency control circuit, the input access second emergent control signal of the second road emergency control circuit; Each links to each other the output of each road emergency control circuit with an I/O port of governor circuit.
In the such scheme, described State-output circuit has 3 the tunnel; Each links to each other the input of each line state output circuit with an I/O port of governor circuit; The output of first via State-output circuit is sent the tripped condition output signal, and the output of the second line state output circuit is sent the malfunction output signal, and the output of Third Road State-output circuit is sent the initial firing current state output signal.
As improvement, described intelligent priming system ignition controller also further comprises switch detection circuit, the input of this switch detection circuit is connected between isolated drive circuit and the igniting output circuit, and the output of switch detection circuit links to each other with an I/O port of governor circuit.
As improvement, described intelligent priming system ignition controller also further comprises short circuit current relatively device, short circuit current Threshold circuit and status latch; Wherein two of short circuit current comparison device inputs connect respectively the output of short circuit current Threshold circuit and initial firing current testing circuit, and the short circuit current relatively output of device links to each other with the control end of status latch; Status latch is connected between the output of the I/O port of governor circuit and isolated drive circuit.
In the such scheme, described igniting output circuit is mainly by 4 field effect transistor Q7-Q10, and 4 grids drive resistance R 17-20, and 4 gate protection diode R42-45 form; The output of isolated drive circuit is divided into 4 the tunnel, one the tunnel drives resistance R 17 through grid links to each other with the grid of field effect transistor Q7, one the tunnel drives resistance R 18 through grid links to each other with the grid of field effect transistor Q8, one the tunnel drives resistance R 19 through grid links to each other with the grid of field effect transistor Q9, and one the tunnel drives resistance R 20 through grid links to each other with the grid of field effect transistor Q10; The source electrode of the anodic bonding field effect transistor Q7 of gate protection diode R42, the negative electrode of gate protection diode R42 connects the grid of field effect transistor Q7; The source electrode of the anodic bonding field effect transistor Q8 of gate protection diode R43, the negative electrode of gate protection diode R43 connects the grid of field effect transistor Q8; The source electrode of the anodic bonding field effect transistor Q9 of gate protection diode R44, the negative electrode of gate protection diode R44 connects the grid of field effect transistor Q9; The source electrode of the anodic bonding field effect transistor Q10 of gate protection diode R45, the negative electrode of gate protection diode R45 connects the grid of field effect transistor Q10; The source electrode of field effect transistor Q7 links to each other with the drain electrode of field effect transistor Q9, the source electrode of field effect transistor Q8 links to each other with the drain electrode of field effect transistor Q10, the access point ignition source was anodal after the drain electrode of field effect transistor Q7 linked to each other with the drain electrode of field effect transistor Q8, and the source electrode of field effect transistor Q9 links to each other with the source electrode of field effect transistor Q10 by priming system load tie point ignition source negative pole.
In the such scheme, described igniting output circuit also comprises a driven equilibrium resistance R 49, and an end of this driven equilibrium resistance R 49 connects between the output and resistance R 19 of isolated drive circuit, and the other end connects the power cathode of isolated drive circuit.
In the such scheme, described housing is combined by radome and insulating base.
Compared with prior art, the present invention has following features:
1, after governor circuit reception host computer and/or emergent control end sent control command, response control was to turn on and off the igniting output circuit; After the igniting output circuit was connected, initial firing current testing circuit induced current changed, and governor circuit is processed curent change and deposited this variation in the initial firing current memory.
2, surpass predefined overcurrent protection threshold value when curent change, carry out overcurrent protection, surpass the short-circuit protection threshold value, can cut off within a certain period of time the igniting output circuit.
3, power on after, within a certain period of time, finish from detecting, can provide whether available flag of device.
Description of drawings
Fig. 1 is the theory diagram of inventive embodiments;
Fig. 2 is the physical circuit figure of power circuit;
Fig. 3 is the physical circuit figure of Bus isolation transmission circuit;
Fig. 4 is the physical circuit figure of emergency control circuit;
Fig. 5 is the physical circuit figure of State-output circuit;
Fig. 6 is the physical circuit figure of isolated drive circuit;
Fig. 7 is the physical circuit figure of initial firing current testing circuit;
Fig. 8 is the physical circuit figure of governor circuit;
Fig. 9 is the physical circuit figure of initial firing current memory circuit;
Figure 10 is the physical circuit figure of switch detection circuit;
Figure 11 is the physical circuit figure of igniting output control circuit.
Embodiment
A kind of intelligent priming system ignition controller, as shown in Figure 1, it mainly is comprised of housing and the ignition control circuit that is arranged in the housing.
Above-mentioned ignition control circuit comprises power circuit, Bus isolation transmission circuit, at least one emergency control circuit, at least one State-output circuit, isolated drive circuit, initial firing current testing circuit, governor circuit, initial firing current memory circuit and igniting output circuit; The input of power circuit links to each other with bias supply, the first output head anode of power circuit (+5V) be that positive source links to each other with the working power port of governor circuit, the first negative pole of output end (GND) links to each other with the power cathode of governor circuit, the second output head anode of power circuit (+12V) linking to each other with the positive source of isolated drive circuit, the second negative pole of output end (LGND) links to each other with the power cathode of isolated drive circuit; One end of Bus isolation transmission circuit links to each other with host computer through data/address bus, and the other end of Bus isolation transmission circuit links to each other with the transmitting-receiving port of governor circuit; The input access one emergent control signal of connecting of each emergency control circuit, the output of each emergency control circuit links to each other with an I/O port of governor circuit; The input of each State-output circuit links to each other with an I/O port of governor circuit, and the output of each State-output circuit is respectively sent a state output signal; An I/O port of governor circuit links to each other with the input of isolated drive circuit, and the output of isolated drive circuit connects the input of igniting output circuit; The output head anode tie point ignition source of igniting output circuit is anodal, and the negative pole of output end of igniting output circuit is through priming system load tie point ignition source negative pole; The input of initial firing current testing circuit is positioned at the igniting negative pole of output end place of igniting output circuit, gathers the output current of igniting output circuit, and the output of initial firing current testing circuit links to each other with the AD port of governor circuit; The initial firing current memory circuit is connected on the SPI mouth of governor circuit.
Power circuit is responsible for carrying out the electric power conversion, for the ignition controller circuit provides power supply.In the present invention, described power circuit comprises DC/DC module T1 as shown in Figure 2, resistance R 2, R3, R5, diode R1, R4, capacitor C 1, C2, C5～C8, electromagnetic interface filter K1, K2.Resistance R 2, R3, the input surge voltage-suppressing circuit that diode R1, R4 form.After resistance R 2, R3 were in parallel, the one end linked to each other with the negative electrode of diode R1, and the other end links to each other with the negative electrode of diode R4, the anodic bonding external bias positive source of diode R1, the anodic bonding external bias power cathode of diode R4.DC/DC module T1, the dual path isolation power supply that capacitor C 1, C2, C5～C8 form.Capacitor C 1, C2 are connected in parallel on the two ends of diode R4 simultaneously, and 2 GND ends of the anodic bonding DC/DC module T1 of diode R4, the negative electrode of diode R4 connect 2 Vin+ ends of DC/DC module T1.Capacitor C 5, C7 be connected in parallel on DC/DC module T1's simultaneously+5V end and GND end on, capacitor C 6, C8 be connected in parallel on simultaneously DC/DC module T1+12V hold and the LGND end on.The input power of power circuit is that bias supply is ± 28V, and output voltage is respectively the positive source of governor circuit and positive source and the negative pole (+12V and LGND) of negative pole (+5V and GND) and isolated drive circuit.
The Bus isolation transmission circuit is realized acceptance and the transmission of data.In the present invention, the Bus isolation transmission circuit comprises isolation transceiver module T2, chip magnetic bead R52, R53 and capacitor C 19 as shown in Figure 3.One end of capacitor C 19 is connected to the GND end of isolation transceiver module T2, and an end is connected to the VCC end of isolation transceiver module T2.The RXD end of isolation transceiver module T2 is connected the CAN transmitting-receiving port that connects governor circuit with TXD, the CHNH of isolation transceiver module T2 is through the CHNL of chip magnetic bead R52, the isolation transceiver module T2 CHG through chip magnetic bead R53, isolation transceiver module T2, three's connection data bus.In the present embodiment, described data/address bus type is CAN2.0 or RS485.When data sent, the CANTX data communication device was crossed isolation transceiver module T2, presents the differential level signal between CANL and the CANH, during data receiver, differential level signal between CANL and the CANH is by isolation transceiver module T2, and CANRX presents receive data, the highest 1000Kbps of message transmission rate.
Emergency control circuit realizes that control voltage high level is effective with the level signal of control voltage transitions for judging for processor of outside.In the present invention, described emergency control circuit has 2 the tunnel; The input access first emergent control signal of first via emergency control circuit, the input access second emergent control signal of the second road emergency control circuit; Each links to each other the output of each road emergency control circuit with an I/O port of governor circuit.Wherein, emergency control circuit mainly by photoelectrical coupler Q5, is inputted current-limiting resistance R25, R26 as shown in Figure 4, and output current limiting resistance R 34 and diode R30 form; The end of input current-limiting resistance R25 connects the emergent control signal of connecting, the other end of input current-limiting resistance R25 is divided into 2 the tunnel, one the tunnel directly links to each other with the input anode of photoelectrical coupler Q5, and one the tunnel links to each other with the input cathode of photoelectrical coupler Q5 through input current-limiting resistance R26; The anode of diode R30 connects the bias supply negative pole simultaneously, and (28V) and the input cathode of photoelectrical coupler Q5, the negative electrode of diode R30 connects the input cathode of photoelectrical coupler Q5; The output head anode of photoelectrical coupler Q5 connects I/O port of governor circuit and an end of output current limiting resistance R 34, the positive source of the other end connection governor circuit of output current limiting resistance R 34 (+5V), the negative pole of output end of photoelectrical coupler Q5 connects the power cathode (GND) of governor circuit.
The State-output circuit exports the ignition controller operating state to outside port, and the output high level represents controller or priming system fault.In the present invention, described State-output circuit has 3 the tunnel; Each links to each other the input of each line state output circuit with an I/O port of governor circuit; The output of first via State-output circuit is sent the tripped condition output signal, and the output of the second line state output circuit is sent the malfunction output signal, and the output of Third Road State-output circuit is sent the initial firing current state output signal.Above-mentioned State-output circuit as shown in Figure 5, mainly by photoelectrical coupler Q2, output current limiting resistance R 13, R27, and input current-limiting resistance R31 forms; The input anode of photoelectrical coupler Q2 through input current-limiting resistance R31 connect governor circuit positive source (+5V), the input cathode of photoelectrical coupler Q2 connects an I/O port of governor circuit; The output head anode of photoelectrical coupler Q2 through output current limiting resistance R 27 connect bias supplies anodal (+28V), the negative pole of output end of photoelectrical coupler Q2 is sent state output signal; One end of output current limiting resistance R 13 connects the negative pole of output end of photoelectrical coupler Q2, and the other end of output current limiting resistance R 13 connects the bias supply negative pole (28V).
Isolated drive circuit is finished the 5V drive level to the conversion of 12V drive level, realizes the physical isolation between control circuit and the igniting output circuit.In the present invention, isolated drive circuit comprises that photoelectrical coupler Q1, EFT Drive Unit K4 and peripheral circuit thereof form as shown in Figure 6.The positive source of the input anode connection governor circuit of photoelectrical coupler Q1 (+5V), input cathode connects the I/O mouth of governor circuit through current-limiting resistance R21.The VCC of photoelectrical coupler Q1 is connected the V+ end of EFT Drive Unit K4 with the Vout output, the GND output of photoelectrical coupler Q1 connects the IN+ end of EFT Drive Unit K4.The V+ of EFT Drive Unit K4 end be divided into 2 tunnel, one tunnel positive source that directly connects isolated drive circuit (+12V), connect the power cathode (LGND) of isolated drive circuit behind one tunnel capacitor C 10 through parallel connection, C16, the C17.The IN+ end of EFT Drive Unit K4 is connected to the power cathode (LGND) of isolated drive circuit through resistance R 22, the IN-end of EFT Drive Unit K4 and GND end are directly connected to the power cathode (LGND) of isolated drive circuit.The P_OUT end of EFT Drive Unit K4 is through resistance R 23, and the N_OUT of EFT Drive Unit K4 end is connected to igniting output circuit control end after resistance R 24.Isolated drive circuit will be converted to from the 5V control level of governor circuit single-chip processor i/o mouth the required 12V voltage of power output circuit control end.
The initial firing current testing circuit is converted to proportional analog voltage signal with initial firing current.In the present invention, the initial firing current testing circuit is comprised of Hall element K10 and peripheral circuit thereof as shown in Figure 7.The positive source of the vdd terminal connection governor circuit of Hall element K10 (+5V), the VSS end of Hall element K10 connects the power cathode (GND) of governor circuit, the two ends of capacitor C 27 are connected to vdd terminal and the VSS end of Hall element K10, and the two ends of capacitor C 23 are connected to vdd terminal and the VDIG end of Hall element K10.The TEMPOUT of Hall element K10 connects the power cathode (GND) of governor circuit through capacitor C 3, the MUST0 of Hall element K10 is connected the power cathode (GND) that directly connects governor circuit with TESTOUT.The OUT/PWM end of Hall element K10 is sent into the A/D port of governor circuit.After resistance R 11 and capacitor C 11 parallel connections, an end connects the OUT/PWM end of Hall element K10, and an end connects the power cathode (GND) of governor circuit.6 components and parts in the initial firing current testing circuit are welded on the double-clad board of a 12mm * 10mm, and initial firing current is converted to it proportional analog voltage signal.
What governor circuit adopted is single-chip microcomputer, and it is the center processing unit of various data and logic.It passes through collection and processing to analog quantity, switching value, for example calculating of current sensor output voltage values, and igniting output switch status signal etc., the location fault, and store these malfunctions, by data bus interface notice main control computer.In the present invention, governor circuit comprises single-chip microcomputer K9, capacitor C 21, C12, C13, C14 as shown in Figure 8, crystal resonator G1, and resistance R 47, R48.The frequency of external crystal resonant circuit is not less than 8.0MHz.The Vdd end minute two-way of single-chip microcomputer K9, one the tunnel with the positive source of governor circuit (+5V) be connected, the one tunnel is in parallel with capacitor C 21, C12 one end, the Vss end minute two-way of single-chip microcomputer K9, one the tunnel is in parallel with capacitor C 21, the C12 other end, and one the road is connected to the power cathode (GND) of governor circuit.One end of capacitor C 13 is connected to the Vdda of single-chip microcomputer K9, and the other end connects the Vssa of single-chip microcomputer K9.After the two ends of crystal resonator G1 and resistance R 48 were in parallel, an end was connected with the EXTAL terminal of single-chip microcomputer K9, and the other end is connected with the EXTAL terminal of single-chip microcomputer K9.The intermediate terminal of crystal resonator G1 connects the power cathode (GND) of governor circuit.The positive source of resistance R 47 1 ends connection governor circuit (+5V), the other end divides two-way, and one the tunnel connects the RESET terminal of single-chip microcomputer K9, and another road connects capacitor C 14, and the other end of capacitor C 14 is connected to the power cathode of governor circuit (GND).
The flag bit of the overcurrent tripping of initial firing current memory circuitry stores analog voltage signal (initial firing current) and initial firing current and short circuit tripping operation.The initial firing current memory circuit comprises ferroelectric memory non-volatile data memory K8 as shown in Figure 9, capacitor C 20, and resistance R 35.The storage power output unit is opened within the rear 2s, the initial firing current numerical value of single-chip microcomputer sampling and overcurrent, short-circuit condition position.The SCK end of non-volatile data memory K8 is connected to the SPSCK end of single-chip microcomputer K9, the SI end of non-volatile data memory K8 is connected to the MOSI end of single-chip microcomputer K9, the S0 end of non-volatile data memory K8 is connected to the MISO end of single-chip microcomputer K9, and the CS end of non-volatile data memory K8 is connected to the SS end of single-chip microcomputer K9.Capacitor C 20 two ends are in parallel with VDD, the VSS end of non-volatile data memory K8, the positive source of the vdd terminal connection governor circuit of non-volatile data memory K8 (+5V), the VSS end is connected to the power cathode (GND) of governor circuit.The HOLD of non-volatile data memory K8, WP end connects respectively the end of pull-up resistor R35, the positive source of the other end connection governor circuit of resistance R 35 (+5V).
Switch condition detection circuit is responsible for judging that output circuit opens and turn-off.The input of switch detection circuit is connected between isolated drive circuit and the igniting output circuit, and the output of switch detection circuit links to each other with an I/O port of governor circuit.In the present invention, switch condition detection circuit as shown in figure 10, mainly by photoelectrical coupler Q6, output current limiting resistance R 38, input current-limiting resistance R8, and diode R46 forms; The input anode of photoelectrical coupler Q6 connects the positive source of isolated drive circuit through input current-limiting resistance R8, the input cathode of photoelectrical coupler Q6 connects the output head anode of igniting output circuit through diode R46; The output head anode of photoelectrical coupler Q6 connects I/O port of governor circuit and an end of output current limiting resistance R 38, the positive source of the other end connection governor circuit of output current limiting resistance R 38 (+5V), the negative pole of output end of photoelectrical coupler Q6 connects the power cathode (GND) of governor circuit.
The igniting output circuit is responsible for turning on and off the voltage signal on the priming system.In the present invention, the igniting output circuit comprises 4 field effect transistor Q7-Q10 as shown in figure 11, and 4 grids drive resistance R 17-20, and 4 gate protection diode R42-45 and driven equilibrium resistance R 49; The output of isolated drive circuit is divided into 4 the tunnel, one the tunnel drives resistance R 17 through grid links to each other with the grid of field effect transistor Q7, one the tunnel drives resistance R 18 through grid links to each other with the grid of field effect transistor Q8, one the tunnel drives resistance R 19 through grid links to each other with the grid of field effect transistor Q9, and one the tunnel drives resistance R 20 through grid links to each other with the grid of field effect transistor Q10; The source electrode of the anodic bonding field effect transistor Q7 of gate protection diode R42, the negative electrode of gate protection diode R42 connects the grid of field effect transistor Q7; The source electrode of the anodic bonding field effect transistor Q8 of gate protection diode R43, the negative electrode of gate protection diode R43 connects the grid of field effect transistor Q8; The source electrode of the anodic bonding field effect transistor Q9 of gate protection diode R44, the negative electrode of gate protection diode R44 connects the grid of field effect transistor Q9; The source electrode of the anodic bonding field effect transistor Q10 of gate protection diode R45, the negative electrode of gate protection diode R45 connects the grid of field effect transistor Q10; The source electrode of field effect transistor Q7 links to each other with the drain electrode of field effect transistor Q9, the source electrode of field effect transistor Q8 links to each other with the drain electrode of field effect transistor Q10, the access point ignition source was anodal after the drain electrode of field effect transistor Q7 linked to each other with the drain electrode of field effect transistor Q8, and the source electrode of field effect transistor Q9 links to each other with the source electrode of field effect transistor Q10 by priming system load tie point ignition source negative pole.One end of driven equilibrium resistance R 49 connects between the output and resistance R 19 of isolated drive circuit, and the other end connects the power cathode of isolated drive circuit.
Intelligent ignition controller of the present invention has three kinds of operational modes:
1. pass through CAN(RS485) bus accepts the control command of host computer, turns on and off the igniting output circuit;
2. apply voltage at emergent control end, processor response control turns on and off the igniting output circuit.
3. respond simultaneously PC control order and emergent control end voltage, turn on and off the igniting output circuit, the state of output circuit is determined by final order.
Output circuit is connected, and initial firing current testing circuit induced current changes, and governor circuit is processed curent change and deposited this variation in the initial firing current memory.When curent change surpasses predefined overcurrent protection threshold value, carry out overcurrent protection by I2t, surpass the short-circuit protection threshold value, at 0.5ms internal cutting off igniting output circuit.After powering on, in 500ms, finish from detecting, provide whether available flag of device.
The course of work of the present invention is as follows: after bias supply applies voltage, and power module work, the single-chip microcomputer electrification reset of governor circuit is finished in the 500ms from detecting, and ignition controller is by certainly detecting malfunction output circuit output low level.Otherwise, the output high level.Emergent control level or bus " open-minded " control command connected of the single-chip microcomputer response of governor circuit, the driving isolation drive circuit is exported 12V voltage, puts on the control end of igniting output circuit, and the igniting output circuit is connected, and initial firing current is applied on the priming system.The initial firing current testing circuit is converted to proportional analog voltage signal with initial firing current.The inner AD converter of single-chip microcomputer detects this signal, is converted to and can supplies the upper machine-readable 10 system current values of getting, and accepts host computer electric current querying command, transmits current value to host computer.
Initial firing current surpasses overcurrent threshold value and the duration that anticipation is set, and Micro Controller Unit (MCU) driving isolated drive circuit output 0V voltage turn-offs the igniting output circuit.Make simultaneously protection output state output high level.Or initial firing current is when surpassing the short circuit threshold value that anticipation sets, and short circuit current is the device output low level relatively, and Micro Controller Unit (MCU) driving isolated drive circuit output 0V voltage turn-offs the igniting output circuit.Make simultaneously protection output state output high level.
The flag bit (if occuring in the 2s) of the current value after the opening state of igniting output circuit, the igniting in the 2s, overcurrent tripping and short circuit tripping operation is stored in the initial firing current memory by specific format, uses the software of regulation, relevant information can be read.
Claims (8)
1. intelligent priming system ignition controller is characterized in that: mainly be comprised of housing and the ignition control circuit that is arranged in the housing; Wherein ignition control circuit comprises power circuit, Bus isolation transmission circuit, at least one emergency control circuit, at least one State-output circuit, isolated drive circuit, initial firing current testing circuit, governor circuit, initial firing current memory circuit and igniting output circuit; The input of power circuit links to each other with bias supply, the first output head anode of power circuit links to each other with the working power port of governor circuit, the first negative pole of output end links to each other with the power cathode of governor circuit, the second output head anode of power circuit links to each other with the positive source of isolated drive circuit, and the second negative pole of output end links to each other with the power cathode of isolated drive circuit; One end of Bus isolation transmission circuit links to each other with host computer through data/address bus, and the other end of Bus isolation transmission circuit links to each other with the transmitting-receiving port of governor circuit; The input access one emergent control signal of connecting of each emergency control circuit, the output of each emergency control circuit links to each other with an I/O port of governor circuit; The input of each State-output circuit links to each other with an I/O port of governor circuit, and the output of each State-output circuit is respectively sent a state output signal; An I/O port of governor circuit links to each other with the input of isolated drive circuit, and the output of isolated drive circuit connects the input of igniting output circuit; The output head anode tie point ignition source of igniting output circuit is anodal, and the negative pole of output end of igniting output circuit is through priming system load tie point ignition source negative pole; The input of initial firing current testing circuit is positioned at the igniting negative pole of output end place of igniting output circuit, gathers the output current of igniting output circuit, and the output of initial firing current testing circuit links to each other with the AD port of governor circuit; The initial firing current memory circuit is connected on the SPI mouth of governor circuit.
2. intelligent priming system ignition controller according to claim 1, it is characterized in that: described emergency control circuit has 2 the tunnel; The input access first emergent control signal of first via emergency control circuit, the input access second emergent control signal of the second road emergency control circuit; Each links to each other the output of each road emergency control circuit with an I/O port of governor circuit.
3. intelligent priming system ignition controller according to claim 1, it is characterized in that: described State-output circuit has 3 the tunnel; Each links to each other the input of each line state output circuit with an I/O port of governor circuit; The output of first via State-output circuit is sent the tripped condition output signal, and the output of the second line state output circuit is sent the malfunction output signal, and the output of Third Road State-output circuit is sent the initial firing current state output signal.
4. intelligent priming system ignition controller according to claim 1, it is characterized in that: also further comprise switch detection circuit, the input of this switch detection circuit is connected between isolated drive circuit and the igniting output circuit, and the output of switch detection circuit links to each other with an I/O port of governor circuit.
5. intelligent priming system ignition controller according to claim 1 is characterized in that: also further comprise short circuit current relatively device, short circuit current Threshold circuit and status latch; Wherein two of short circuit current comparison device inputs connect respectively the output of short circuit current Threshold circuit and initial firing current testing circuit, and the short circuit current relatively output of device links to each other with the control end of status latch; Status latch is connected between the output of the I/O port of governor circuit and isolated drive circuit.
6. intelligent priming system ignition controller according to claim 1 is characterized in that: described igniting output circuit is mainly by 4 field effect transistor Q7-Q10, and 4 grids drive resistance R 17-20, and 4 gate protection diode R42-45 form; The output of isolated drive circuit is divided into 4 the tunnel, one the tunnel drives resistance R 17 through grid links to each other with the grid of field effect transistor Q7, one the tunnel drives resistance R 18 through grid links to each other with the grid of field effect transistor Q8, one the tunnel drives resistance R 19 through grid links to each other with the grid of field effect transistor Q9, and one the tunnel drives resistance R 20 through grid links to each other with the grid of field effect transistor Q10; The source electrode of the anodic bonding field effect transistor Q7 of gate protection diode R42, the negative electrode of gate protection diode R42 connects the grid of field effect transistor Q7; The source electrode of the anodic bonding field effect transistor Q8 of gate protection diode R43, the negative electrode of gate protection diode R43 connects the grid of field effect transistor Q8; The source electrode of the anodic bonding field effect transistor Q9 of gate protection diode R44, the negative electrode of gate protection diode R44 connects the grid of field effect transistor Q9; The source electrode of the anodic bonding field effect transistor Q10 of gate protection diode R45, the negative electrode of gate protection diode R45 connects the grid of field effect transistor Q10; The source electrode of field effect transistor Q7 links to each other with the drain electrode of field effect transistor Q9, the source electrode of field effect transistor Q8 links to each other with the drain electrode of field effect transistor Q10, the access point ignition source was anodal after the drain electrode of field effect transistor Q7 linked to each other with the drain electrode of field effect transistor Q8, and the source electrode of field effect transistor Q9 links to each other with the source electrode of field effect transistor Q10 by priming system load tie point ignition source negative pole.
7. intelligent priming system ignition controller according to claim 6, it is characterized in that: described igniting output circuit also comprises a driven equilibrium resistance R 49, one end of this driven equilibrium resistance R 49 connects between the output and resistance R 19 of isolated drive circuit, and the other end connects the power cathode of isolated drive circuit.
8. intelligent priming system ignition controller according to claim 1, it is characterized in that: described housing is combined by radome and insulating base.
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| CN201310263144.1A CN103326313B (en) | 2013-06-27 | 2013-06-27 | Intelligence priming system ignition controller |
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| CN201310263144.1A CN103326313B (en) | 2013-06-27 | 2013-06-27 | Intelligence priming system ignition controller |
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| CN103326313B CN103326313B (en) | 2016-02-24 |
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| CN105022318A (en) * | 2015-06-30 | 2015-11-04 | 北京空间机电研究所 | Wireless control system for ignition drop-test of initiating explosive device |
| CN105988463A (en) * | 2015-06-30 | 2016-10-05 | 联合汽车电子有限公司 | Fault diagnosis circuit and fault diagnosis method of internal drive electronic control ignition system |
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| CN108120352A (en) * | 2016-11-30 | 2018-06-05 | 北京航天计量测试技术研究所 | A kind of ignition system and method for dynamic test priming system electrical parameter |
| CN109405679A (en) * | 2018-12-16 | 2019-03-01 | 山西汾西重工有限责任公司 | Self protection type's priming system ignition method |
| CN110285975A (en) * | 2019-07-19 | 2019-09-27 | 桂林航天电子有限公司 | Solid integrates sequence control ignition device |
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| CN106941251A (en) * | 2016-01-05 | 2017-07-11 | 西安航天动力技术研究所 | A kind of initial firing current observation circuit for launching control equipment |
| CN108120352A (en) * | 2016-11-30 | 2018-06-05 | 北京航天计量测试技术研究所 | A kind of ignition system and method for dynamic test priming system electrical parameter |
| CN106643357A (en) * | 2017-02-22 | 2017-05-10 | 西南科技大学 | Sympathetic detonation system |
| CN109405679A (en) * | 2018-12-16 | 2019-03-01 | 山西汾西重工有限责任公司 | Self protection type's priming system ignition method |
| CN110285975A (en) * | 2019-07-19 | 2019-09-27 | 桂林航天电子有限公司 | Solid integrates sequence control ignition device |
| CN110296022A (en) * | 2019-07-19 | 2019-10-01 | 桂林航天电子有限公司 | With the solid ignition module compared with strong adaptability |
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