AU2021323150A1 - Detonation control system and detonation method for fire extinguisher ball - Google Patents
Detonation control system and detonation method for fire extinguisher ball Download PDFInfo
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- AU2021323150A1 AU2021323150A1 AU2021323150A AU2021323150A AU2021323150A1 AU 2021323150 A1 AU2021323150 A1 AU 2021323150A1 AU 2021323150 A AU2021323150 A AU 2021323150A AU 2021323150 A AU2021323150 A AU 2021323150A AU 2021323150 A1 AU2021323150 A1 AU 2021323150A1
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- 238000005474 detonation Methods 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000003990 capacitor Substances 0.000 claims abstract description 44
- 238000001514 detection method Methods 0.000 claims abstract description 28
- 239000002360 explosive Substances 0.000 claims abstract description 9
- 238000007599 discharging Methods 0.000 claims abstract description 8
- 238000004891 communication Methods 0.000 claims description 30
- 230000005540 biological transmission Effects 0.000 claims description 12
- 239000013078 crystal Substances 0.000 claims description 6
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 230000008054 signal transmission Effects 0.000 claims description 3
- 230000005856 abnormality Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000004146 energy storage Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003721 gunpowder Substances 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004899 motility Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/10—Initiators therefor
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C19/00—Hand fire-extinguishers in which the extinguishing substance is expelled by an explosion; Exploding containers thrown into the fire
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
- F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
- F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/10—Initiators therefor
- F42B3/12—Bridge initiators
- F42B3/121—Initiators with incorporated integrated circuit
- F42B3/122—Programmable electronic delay initiators
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Combustion & Propulsion (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Power Sources (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Fuel-Injection Apparatus (AREA)
- Stacking Of Articles And Auxiliary Devices (AREA)
Abstract
A detonation control system and a detonation method for a fire extinguisher ball. The system comprises an MCU control circuit, a power detection and power supply circuit, and a step-up detonation control circuit. The power detection and power supply circuit and the step-up detonation control circuit are both connected to the MCU control circuit by means of electrical signals. The power detection and power supply circuit is configured to continuously supply power to the MCU control circuit and to perform power detection therefor. The step-up detonation control circuit is configured to control charging and discharging of a capacitor so as to detonate an explosive. The circuits of the whole system can be easily controlled, thereby improving the detonation safety of fire extinguisher balls.
Description
[0001] The present application relates to the technical field of fire extinguishing bomb, and
particularly to a detonation control system and detonation method for a fire extinguishing bomb.
[0002] If a fire occurs in a high-rise building, it is difficult for a fire-fighting equipment such as
a ladder truck, a lifting fire truck or the like to reach a height of floor where the fire occurs due to
too high buildings and a limited height of the fire-fighting equipment. An unmanned aerial vehicle
carried fire-extinguishing system has strong motility, not effected by the fire height and
surrounding environment, and thus is able to solve a world problem that the fire in a high-rise
building cannot be extinguished quickly and effectively. In an unmanned aerial vehicle carried fire
extinguishing bomb system, a detonation operation of the fire extinguishing bomb is usually
achieved by an electronic detonator including a lead wire, a control circuit board with a delay chip,
an igniting gunpowder head and a primary explosive. When in use, a bus bar for transmitting a
detonation signal is connected to the lead wire, then a detonation serial signal is output. The delay
chip delays the detonation by a preset time, and the control circuit board transmits the detonation
signal to the igniting gunpowder head via a bridge wire to achieve detonation control. However,
in existing detonation control systems, there are some disadvantages such as unstable charging
and discharging in a charging and discharging control circuit and low safety performance in using
the electronic detonator.
[0003] In view of the defects in the exiting technology, an object of the present application is to
provide a detonation control system and detonation method for a fire extinguishing bomb.
[0004] In order to achieve the above object, the present application provides the following
technical solution:
[0005] a detonation control system for a fire extinguishing bomb, characterized by comprising
a MCU (Microprogrammed Control Unit) control circuit, a power detection and supply circuit and
a boost detonation control circuit, in which the power detection and supply circuit and the boost
detonation control circuit are both in electric signal connection with the MCU control circuit; the
power detection and supply circuit continuously is configured to supply and detect power to the
MCU control circuit; and the boost detonation control circuit is configured to control charging and
discharging of a capacitor to detonate an explosive.
[0006] Further, the detonation control system for a fire extinguishing bomb further includes a
physical address identifying circuit and a RS485 communication circuit, in which the physical
address identifying circuit is in electric signal connection with the MCU control circuit; the
physical address identifying circuit is configured for setting a physical address of each section of
the fire extinguishing bomb; the RS485 communication circuit is connected to the MCU control
circuit with an electric signal; and the MCU control circuit is configured for conducting
information transmission with a main board of an unmanned aerial vehicle through the RS485
communication circuit.
[0007] The MCU control circuit includes a chip U1, in which ports PBO, PAl and PA7 of the
chip U1 are connected to the boost detonation control circuit to achieve a command transmission
between the chip Ul and the boost detonation control circuit; ports PB3 to PB5 of the chip Ul are
connected to the physical address identifying circuit to receive address information from the
physical address identifying circuit by the chip Ul; ports PB6 and PAO-WKUP of the chip U1 are
connected to the power detection and supply circuit to achieve a signal transmission between the chip U1 and the power detection and supply circuit; and ports PA8 to PA10 are connected to the
RS485 communication circuit for conducting information transmission between the chip U1 and
the RS485 communication circuit.
[0008] The physical address identifying circuit includes an interface P2, in which pins 2-5 of
the interface P2 are connected to pins 30-33 of the chip U, respectively, through a RC filter circuit;
and the RC filter circuit is configured to eliminate an interference signal generated during turning
a switch.
[0009] In some embodiments of the present application, the power detection and supply circuit
includes an interface P1 and a battery BT1, in which pin 6 of the interface P1 is connected to a
chip U2 through a zener diode D4, the chip U2 is configured to turn a 12V external power supply
to a 3.3V power supply; the 3.3V power supply is connected to a power supply VDD though
capacitor C5, electrolytic capacitor C6 and zener diode D3; the power supply VDD is configured
to supply power to a singlechip; the battery BT1 is connected to a MQS pipe Qi through a zener
diode D1; the zener diode D1 is connected to a triode Q2 through a resistor R4; and the triode Q2
is connected to pin 34 of the chip Ul through a resistor R3 and a resistor RI.
[0010] In some embodiments of the present application, the boost detonation control circuit
includes a battery BT2, a chip U3 and an interface P3, in which the battery BT2 is connected to
pin 5 of the chip U3; pin 4 of the chip U3 is connected to pin 8 of the chip U1 through a resistor
RI; pin 1 of the chip U3 is connected to a resistor R12 and a resistor R13 ground through a
capacitor C8 and a zener diode D7; the zener diode D7 is connected in parallel with two
electrolytic capacitors C9 and capacitor C10 ground in turn; the capacitor C10 is connected to pin
2 of the interface P3; pin 1 of the interface P3 is connected to MOS pipe Q3 through resistor R16;
and the MOS pipe Q3 is connected to pin 15 of the chip U through resistor R14.
[0011] The RS485 communication circuit includes a chip U4, in which pins 6-7 of the chip U4
is connected to pins 3-4 of the interface P1, respectively; pins 1, 3 and 4 of the chip U4 is connected
to pins 22, 20 and 21 of the chip U, respectively; and pin 2 of the chip U4 is grounded through a resistor R35.
[0012] In some embodiments of the present application, pins 1-2 of the interface P1 is connected
to a connection switch KEY-A and a connection switch KEY-B, respectively; the connection
switch KEY-A is connected to pin 13 of the chip U1 through a resistor R31; and the connection
switch KEY-B is connected to the power supply VDD.
[0013] Pin 2 of the chip U1 is connected to a passive crystal oscillator Y1, and the passive crystal
oscillator Y1 is configured to provide stable clock signal to the chip U1.
[0014] A detonation method for afire extinguishing bomb including:
[0015] step one, the system is supplied power, a physical address of the MCU control circuit is
obtained by means of the physical address identifying circuit, and the electrolytic capacitor C9 of
the boost detonation control circuit begins to be charged;
[0016] step two, the MCU control circuit sends time-delay command; the fire extinguishing
bomb begins to be bound, that is, enters countdown preparation phase; a state of the fire
extinguishing bomb is checked and transmitted to the MCU control circuit by the power detection
and supply circuit;
[0017] step three, after being bound, the detected data obtained by the MCU control circuit are
all normal, then a detonation command is initiated; at this time, the fire extinguishing bomb has
the detonation function; if abnormal, step six is performed;
[0018] step four, after the fire extinguishing bomb is throwed away, after the MCU control
circuit detects that the 12V external power supply, the connection switch KEY-A and the
connection switch KEY-B are all disconnected simultaneously, a detonation countdown is initiated;
[0019] step five, after the detonation countdown is ended, the MCU control circuit controls the
electrolytic capacitor C9 of the boost detonation control circuit to discharge, and electric energy
is converted into heat energy, so that a heated bridge wire detonates the explosive to achieve the
detonation of the fire extinguishing bomb; and
[0020] step six, if the detonation is finished or there is an abnormality in the test data of the
MCU control circuit, the MCU control circuit reset the singlechip, so that each of the circuits
returns to a primary state.
[0021] Comparing with the existing technology, the present application has the following
technical effects:
[0022] (1) in the present application, the power detection and supply circuit is provided and
configured for detecting whether the power supply of the MCU control circuit is normal. And two
switching modes of external power supply and battery BT1 are adopted to continuously charge
the MCU control circuit, so as to ensure the working stability of the MCU control circuit.
Meanwhile, the boost detonation control circuit is provided to detonate the electronic detonator,
and the two switching modes of external power supply and battery BT1 are adopted to
continuously charge the electrolytic capacitor C9 and store energy, so as to obtain a stable and
controllable energy storage process. The cooperation of the MOS pipe Q3 and the MCU control
circuit is able to control the discharging of the electrolytic capacitor, so that the circuit has a fast
response, improving the reliability and safety of fire extinguishing bomb during detonation process.
The whole circuit has a simple control mode and the fire extinguishing bomb has a high detonation
safety performance.
[0023] (2) the RS485 communication circuit is provided to achieve the communication between
the main board of the unmanned aerial vehicle and the MCU control circuit, and a CRC checked
data is added in the MCU control circuit to achieve a stable data transmission between the RS485
communication circuit and the MCU control circuit.
[0024] The figures are provided for further understanding the present application, and constitute
a part of the specification. And the figures are used to interpret the present application with the
embodiments of the present application, and not a limit to the present application. In the figures:
[0025] FIG.1 is an overall structure block diagram of the present application;
[0026] FIG.2 is an overall circuit diagram of the present application;
[0027] FIG.3 is a circuit diagram of a MCU control circuit and a physical address identifying
circuit of the present application;
[0028] FIG.4 is a circuit diagram of a power detection and supply circuit of the present
application;
[0029] FIG.5 is a circuit diagram of a boost detonation control circuit of the present application;
[0030] FIG.6 is a circuit diagram of a RS485 communication circuit of the present application;
[0031] The technical solutions in the embodiments of the present invention will be clearly and
completely described below with reference to the figures of the present application. Obviously,
the described embodiments are only a part of the embodiments of the present application, not all
the embodiments. Based on the embodiments in the present application, all the other embodiments
obtained without creative work by those skilled in the art fall into the protection scope of the
present application.
[0032] It should be noted that, when a component is referred as "fixed to" another component,
it may be directly on another component or there may be an intermediate component. When a
component is considered to be "connected to" another component, it may be directly connected to
another component or there may be an intermediate component. When a component is considered
to be "provided on" another component, it may be directly provided on another component or
there may be an intermediate component. In the present application, the terms "vertical",
"horizontal", "left", "right" and similar statements are just used for illustration.
[0033] Unless otherwise defined, all the technical and scientific terms used herein have the same
meaning as commonly understood by those skilled in the art. All the terms used in the specification
of the present application are only for the purpose of describing the specific embodiments, not
intent to limit the present application. The terms "and/or" used in the present application include any one or all the combinations of one or more listed items.
[0034] Referring to FIG.1 to 6 at the same time, a better embodiment in the present application
provides a detonation control system and detonation method for a fire extinguishing bomb,
including a MCU control circuit, a power detection and supply circuit and a boost detonation
control circuit, in which the power detection and supply circuit and the boost detonation control
circuit are both in electric signal connection with the MCU control circuit; the power detection
and supply circuit continuously is configured to supply and detect power to the MCU control
circuit; and the boost detonation control circuit is configured to control charging and discharging
of a capacitor to detonate an explosive.
[0035] Specifically, in the present application, the power detection and supply circuit is provided
and configured for detecting whether the power supply of the MCU control circuit is normal. And
two switching modes of external power supply and battery BT1 are adopted to continuously charge
the MCU control circuit, so as to ensure the working stability of the MCU control circuit.
Meanwhile, the boost detonation control circuit is provided to detonate the electronic detonator,
and the two switching modes of external power supply and battery BT1 are adopted to
continuously charge the electrolytic capacitor C9 and store energy, so as to obtain a stable and
controllable energy storage process. The cooperation of the MOS pipe Q3 and the MCU control
circuit is able to control the discharging of the electrolytic capacitor, so that the circuit has a fast
response, improving the reliability and safety of fire extinguishing bomb during detonation process.
[0036] Further, in the embodiment, the detonation control system for the fire extinguishing
bomb also includes a physical address identifying circuit and a RS485 communication circuit, in
which the physical address identifying circuit is in electric signal connection with the MCU control
circuit; the physical address identifying circuit is configured for setting a physical address of each
section of the fire extinguishing bomb; the RS485 communication circuit is connected to the MCU
control circuit with an electric signal; and the MCU control circuit is configured for conducting
information transmission with a main board of an unmanned aerial vehicle through the RS485 communication circuit.
[0037] Specifically, in the present application, the physical address identifying circuit is
configured to set a physical address of the MCU control circuit by a dial switch. An internal
procedure of the MCU control circuit identify whether each pin is grounded, thereby deteting
whether state of each section of the fire extinguishing bomb is normal. The RS485 communication
circuit is provided to achieve the communication between the main board of the unmanned aerial
vehicle and the MCU control circuit, and a CRC checked data is added in the MCU control circuit
to achieve a stable data transmission between the RS485 communication circuit and the MCU
control circuit.
[0038] In the present embodiment, as shown in FIG.3, the MCU control circuit includes a chip
Ul, and the chip U1 is STM32F103T8U6 model. Ports PBO, PAl and PA7 of the chip U1 are
connected to the boost detonation control circuit to achieve a command transmission between the
chip U1 and the boost detonation control circuit; ports PB3 to PB5 of the chip U1 are connected
to the physical address identifying circuit to receive address information from the physical address
identifying circuit by the chip Ul; ports PB6 and PAO-WKUP of the chip U1 are connected to the
power detection and supply circuit to achieve a signal transmission between the chip U1 and the
power detection and supply circuit; and ports PA8 to PA10 are connected to the RS485
communication circuit for conducting information transmission between the chip U1 and the
RS485 communication circuit.
[0039] Further, port PB2 of the chip Ul is connected to an indicator light LEDI, and the
indicator light LEDI is used for operation indication of the chip Ul. Pin 2 of the chip Ul is
connected to a passive crystal oscillator Yl, and the passive crystal oscillator Yl is configured to
provide a stable clock signal to the chip Ul to achieve an accurate timing. Pin 4 of the chip Ul is
connected to the power supply VDD through resistor R27, and is a reset pin. When the chip Ul
detects a fault or finishes the detonation work, the chip Ul controls the power supply VDD to be
disconnected, thereby restoring each singlechip to a primary state thereof. Pins 25 and 28 of the chip U1 are connected to interface P5 that is configured to be connected to a data transmission interface of the computer to download programs to satisfy the software control of the whole control system.
[0040] The physical address identifying circuit includes an interface P2 used to be connected to
a dial switch. Pin 1 of the interface P2 is connected to the power supply VDD; pin 2 of the interface
P2 is connected to pin 30 of the chip U1 through resistor R22 and capacitor C16; pin 3 of the
interface P2 is connected to pin 31 of the chip U1 through resistor R21 and capacitor C15; pin 4
of the interface P2 is connected to pin 32 of the chip U1 through resistor R20 and capacitor C14;
and pin 5 of the interface P2 is connected to pin 33 of the chip U1 through resistor R19 and
capacitor C13. Resistor R22, capacitor C16, resistor R21, capacitor C15, resistor R20, capacitor
C14, resistor R19 and capacitor C13 constitute a RC filter circuit, and the RC filter circuit is
configured to eliminate an interference signal generated during turning a switch.
[0041] As shown in FIG.4, the power detection and supply circuit includes an interface P1 and
a battery BT1, and the interface P1 is configured to be connected to an external equipment. Pins 1
and 2 of interface P1 is connected to a connection switch KEY-A and a connection switch KEY
B, respectively; the connection switch KEY-A is connected to pin 13 of the chip U1 through
resistor R31; and the connection switch KEY-B is connected to the power supply VDD. The
connection switch KEY-A and the connection switch KEY-B is used for providing timing signal,
and pins 3 and 4 of the interface P1 is connected to the RS485 communication circuit. Pin 6 of the
interface P1 is connected to a chip U2 through a zener diode D4, the chip U2 is configured to turn
a 12V external power supply to a 3.3V power supply; the 3.3V power supply is connected to a
power supply VDD though capacitor C5, electrolytic capacitor C6 and zener diode D3; the power
supply VDD is configured to supply power to a singlechip; the battery BT1 is connected to a MQS
pipe Q Ithrough a zener diode D1; the zener diode D1 is connected to a triode Q2 through a resistor
R4; and the triode Q2 is connected to pin 34 of the chip U1 through a resistor R3 and a resistor
RI. Specifically, when the 12 V external power supply is supplied, voltage is stabilized by the chip
U2 to generate a 3.3V DC voltage, thereby supplying power to the chip U1. After the 12V voltage
is divided by the resistors R6 and R7, the POWER-I2V voltage signal is obtained and transmitted
to pin 7 of the chip U1 to detect the 12V power supply. After the chip U1 is started, C_BAT signal
of pin 34 of chip U1 outputs 3.3V high level. At this time, the triode Q2 works in the saturation
region; MOS pipe Qi is connected; and the battery BT Ioutputs a 3V voltage. At this time, the
voltage output by the battery BT Iis lower than 3.3 V voltage output by the chip U2, and power
supply of the chip U1 is provided by the chip U2. After fire extinguishing bomb is detached, the
12V external power supply is disconnected, both the connection switches KEY-A and KEY-B are
disconnected, power supply of the chip U1 is provided by the battery BTi to ensure working
stability of the chip Ul.
[0042] In the present embodiment, as shown in FIG.5, the boost detonation control circuit
includes a battery BT2, a chip U3 and an interface P3, in which the battery BT2 is connected to
pin 5 of the chip U3; pin 4 of the chip U3 is connected to a pin 8 of the chip U1 through a resistor
RI1; the chip U3 is a SDB628 model boost chip; pin 1 of the chip U3 is connected to a resistor
R12 and a resistor R13 ground through capacitor C8 and zener diode D7. The zener diode D7 is
connected in parallel with two electrolytic capacitors C9 ground and capacitor C10 ground in turn.
The capacitor C10 is connected to pin 2 of the interface P3 that is configured to be connected to
the heated bridge wire to detonate the explosive. Pin I of the interface P3 is connected to MOS
pipe Q3 through resistor R16, and the MOS pipe Q3 is connected to pin 15 of the chip Ui through
resistor R14. The 12V power supply is connected to the electrolytic capacitor C9 through the zener
diode D5. Specifically, when the 12 V power supply begins to supply power, the 12 V power
supply begins to charge electrolytic capacitor C9. After chip U starts to work, a 16VEN signal
output by pin 8 of the chip U is high level, then the voltage of battery BT2 is boosted by the chip
U3 and a 12V voltage is output. When the 12 V power supply is disconnected, the electrolytic
capacitor C9 is supplied power by the battery BT2. When time-delay is finished, U-PN34 signal
output by pin 15 of the chip U is high level, so that MOS pipe Q3 is connected; the electrolytic capacitor C9 is discharged; and the electric energy is converted to be heat energy, so that the heated bridge wire reaches a detonation point to achieve the detonation of a fire extinguishing bomb.
[0043] As shown in FIG.6, the RS485 communication circuit includes a chip U4, in which pins
6 and 7 of the chip U4 are connected to pins 3 and 4 of the interface P1, respectively; pins 3 and
4 of the interface P1 is used to be connected to the main board of the unmanned aerial vehicle to
achieve the communication between the RS485 communication circuit and the main board of the
unmanned aerial vehicle. Pins 1, 3 and 4 of the chip U4 are connected to pins 22, 20 and 21 of the
chip U1 to achieve the communication between the RS485 communication circuit and chip U1,
and pin 2 of the chip U4 is ground through resistor R35.
[0044] In the present embodiment, a detonation method for a fire extinguishing bomb is as
follows:
[0045] Step one, the system is supplied power, that is a 12 V external power supply is connected.
The electrolytic capacitor C9 in the boost detonation control circuit begins to be charged. A
physical address of each section of the fire extinguishing bomb is obtained by means of a dial
switch of the physical address identifying circuit, and the data is transmitted to the MCU control
circuit. The internal program of the MCU control circuit identifies whether each pin is grounded,
thereby judging whether the internal circuit of the fire extinguishing bomb is connected normally.
[0046] step two, after the internal circuit of the fire extinguishing bomb is judged to be normally
connected, the MCU control circuit sends time-delay command, the fire extinguishing bomb
begins to be bound, that is, enters countdown preparation phase; a state of the fire extinguishing
bomb is checked and transmitted to the MCU control circuit by the power detection and supply
circuit; the MCU control circuit compares a state information of the fire extinguishing bomb with
a preset value to judge whether the fire extinguishing bomb is normal; if normal, step three is
performed; and if abnormal, step five is performed;
[0047] step three, after being bound, the detected data obtained by the MCU control circuit are
all normal, then a detonation command is initiated, the fire extinguishing bomb is detached. The
12V external supply power, the connection switch KEY-A and the connection switch KEY-B are
all disconnected simultaneously. A detonation countdown is initiated when the MCU control
circuit detects a disconnect signal;
[0048] step four, after the detonation countdown is ended, the MCU control circuit controls the
electrolytic capacitor C9 of the boost detonation control circuit to discharge, and electric energy
is converted into heat energy, so that a heated bridge wire detonates the explosive to achieve the
detonation of the fire extinguishing bomb; and
[0049] step five, if the detonation is ended or test data of the MCU control circuit is abnormal,
the MCU control circuit reset the singlechip, so that the power supply VDD is disconnected; each
of the circuits returns to a primary state; and the detonation is stopped.
[0050] The above are the preferred embodiments of the present application, which are not
intended to limit the protection scope of the present application. Therefore, all equivalent changes
made according to the structure, shape and principle of the present application should be covered
within the protection scope of the present application.
Claims (10)
1. A detonation control system for a fire extinguishing bomb, characterized by comprising a
microprogrammed control unit control circuit, a power detection and supply circuit and a boost
detonation control circuit, wherein the power detection and supply circuit and the boost detonation
control circuit are both in electric signal connection with the microprogrammed control unit
control circuit; the power detection and supply circuit continuously is configured to supply and
detect power to the microprogrammed control unit control circuit; and the boost detonation control
circuit is configured to control charging and discharging of a capacitor to detonate an explosive.
2. The detonation control system for a fire extinguishing bomb according to claim 1,
characterized by further comprising a physical address identifying circuit and a RS485
communication circuit, wherein the physical address identifying circuit is in electric signal
connection with the microprogrammed control unit control circuit; the physical address
identifying circuit is configured for setting a physical address of each section of the fire
extinguishing bomb; the RS485 communication circuit is in electric signal connection with the
microprogrammed control unit control circuit; and the microprogrammed control unit control
circuit is configured for conducting information transmission with a main board of an unmanned
aerial vehicle through the RS485 communication circuit.
3. The detonation control system for the fire extinguishing bomb according to claim 2,
characterized in that, the microprogrammed control unit control circuit comprises a chip U1,
wherein ports PBO, PAl and PA7 of the chip U1 are connected to the boost detonation control
circuit for conducting a command transmission between the chip U1 and the boost detonation
control circuit; ports PB3 to PB5 of the chip U1 are connected to the physical address identifying
circuit to receive address information from the physical address identifying circuit by the chip Ul;
ports PB6 and PAO-WKUP of the chip U1 are connected to the power detection and supply circuit
for conducting a signal transmission between the chip U1 and the power detection and supply
circuit; and ports PA8 to PA10 are connected to the RS485 communication circuit to conduct information transmission between the chip U1 and the RS485 communication circuit.
4. The detonation control system for the fire extinguishing bomb according to claim 3,
characterized in that, the physical address identifying circuit comprises an interface P2, wherein
pins 2-5 of the interface P2 are connected to pins 30-33 of the chip U, respectively, through a RC
filter circuit; and the RC filter circuit is configured to eliminate an interference signal generated
during turning a switch.
5. The detonation control system for the fire extinguishing bomb according to claim 4,
characterized in that, the power detection and supply circuit comprises an interface P1 and a
battery BT1, wherein pin 6 of the interface P1 is connected to a chip U2 through a zener diode D4,
the chip U2 is configured to turn a 12V external power supply to a 3.3V power supply; the 3.3V
power supply is connected to a power supply VDD though capacitor C5, electrolytic capacitor C6
and zener diode D3; the power supply VDD is configured to supply power to a singlechip; the
battery BT1 is connected to a MQS pipe Q1 through a zener diode D1; the zener diode D1 is
connected to a triode Q2 through a resistor R4; and the triode Q2 is connected to pin 34 of the chip
U1 through a resistor R3 and a resistor R1.
6. The detonation control system for the fire extinguishing bomb according to claim 5,
characterized in that, the boost detonation control circuit comprises a battery BT2, a chip U3 and
an interface P3, wherein the battery BT2 is connected to pin 5 of the chip U3; pin 4 of the chip U3
is connected to pin 8 of the chip U1 through a resistor Rll; pin 1 of the chip U3 is connected to a
resistor R12 and a resistor R13 ground through a capacitor C8 and a zener diode D7; the zener
diode D7 is connected in parallel with two electrolytic capacitors C9 ground and capacitor C10
ground in turn; the capacitor C10 is connected to pin 2 of the interface P3; pin 1 of the interface
P3 is connected to MOS pipe Q3 through resistor R16; and the MOS pipe Q3 is connected to pin
15 of the chip U through resistor R14.
7. The detonation control system for the fire extinguishing bomb according to claim 6,
characterized in that, the RS485 communication circuit comprises a chip U4, wherein pins 6-7 of the chip U4 are connected to pins 3-4 of the interface P1, respectively; pins 1, 3 and 4 of the chip
U4 are connected to pins 22, 20 and 21 of the chip Ul, respectively; and pin 2 of the chip U4 is
grounded through a resistor R35.
8. The detonation control system for the fire extinguishing bomb according to claim 5,
characterized in that, pins 1-2 of the interface P1 is connected to a connection switch KEY-A and
a connection switch KEY-B, respectively; the connection switch KEY-A is connected to pin 13 of
the chip U1 through a resistor R31; and the connection switch KEY-B is connected to the power
supply VDD.
9. The detonation control system for the fire extinguishing bomb according to claim 3,
characterized in that, pin 2 of the chip U1 is connected to a passive crystal oscillator Y1, and the
passive crystal oscillator Y1 is configured to provide stable clock signal to the chip U1.
10. A detonation method for a fire extinguishing bomb comprising the detonation control
systems according to any one of claims 2-9, characterized in that,
step one, a 12 V external power supply is connected, a physical address of each section
of the fire extinguishing bomb is obtained by means of the physical address identifying circuit,
and a datum is transmitted to the microprogrammed control unit control circuit; the
microprogrammed control unit control circuit reads an information of the datum and judges
whether an internal circuit of the fire extinguishing bomb is normally connected, and when power
is supplied, the electrolytic capacitor C9 of the boost detonation control circuit begins to be
charged;
step two, after the internal circuit of the fire extinguishing bomb isjudged to be normally
connected, the microprogrammed control unit control circuit sends time-delay command and
enters countdown preparation phase; a state of the fire extinguishing bomb is checked and
transmitted to the microprogrammed control unit control circuit by the power detection and supply
circuit; the microprogrammed control unit control circuit compares a state information of the fire
extinguishing bomb with a preset value to judge whether the fire extinguishing bomb is normal; if normal, step three is performed; and if abnormal, step five is performed; step three, after the fire extinguishing bomb is throwed away, the 12V external power supply, the connection switch KEY-A and the connection switch KEY-B are all disconnected simultaneously; and a detonation countdown is initiated when the microprogrammed control unit control circuit detects a disconnect signal; step four, after the detonation countdown is ended, the microprogrammed control unit control circuit controls the electrolytic capacitor C9 of the boost detonation control circuit to discharge, and electric energy is converted into heat energy, so that a heated bridge wire detonates the explosive to achieve the detonation of the fire extinguishing bomb; and step five, if the detonation is ended or there is an abnormality in test data of the microprogrammed control unit control circuit, the microprogrammed control unit control circuit reset the singlechip, so that each of the circuits returns to a primary state.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010780979.4A CN111854539A (en) | 2020-08-06 | 2020-08-06 | Detonation control system and detonation method for fire extinguishing bomb |
| CN202010780979.4 | 2020-08-06 | ||
| PCT/CN2021/105510 WO2022028205A1 (en) | 2020-08-06 | 2021-07-09 | Detonation control system and detonation method for fire extinguisher ball |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2021323150A1 true AU2021323150A1 (en) | 2023-03-09 |
| AU2021323150B2 AU2021323150B2 (en) | 2024-06-13 |
Family
ID=
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022028205A1 (en) | 2022-02-10 |
| CN111854539A (en) | 2020-10-30 |
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