CN219121219U - Electronic delay ignition module for fire extinguishing ammunition head - Google Patents
Electronic delay ignition module for fire extinguishing ammunition head Download PDFInfo
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- CN219121219U CN219121219U CN202223126262.1U CN202223126262U CN219121219U CN 219121219 U CN219121219 U CN 219121219U CN 202223126262 U CN202223126262 U CN 202223126262U CN 219121219 U CN219121219 U CN 219121219U
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Abstract
The utility model relates to a fire extinguishing bomb, in particular to an electronic delay ignition module of a fire extinguishing bomb head. The device comprises a main control chip U1, an energy storage capacitor C1 and a medicine head. The IN end of the main control chip U1 is connected with one end of a resistor R1, the other end of the resistor R1 is connected with the positive output end of a power supply unit U2, and a control circuit is arranged between the main control chip U1 and the positive output end of the power supply unit U2 and used for controlling whether the IN end of the main control chip U1 is electrified or not. One end of the medicine head is connected with the positive electrode of the energy storage capacitor C1, the negative electrode of the energy storage capacitor C1 is grounded, and a release circuit is arranged between the main control chip U1 and the energy storage capacitor C1 and used for controlling the capacitor C1 to ignite the medicine head. The power supply is characterized in that the positive output end of the power supply unit U2 is connected with the positive electrode of the energy storage capacitor C1 through a switch, and the main control chip U1 is connected with the switch in an adaptive manner and used for controlling the switch to be turned on or off. The ignition module has a high charging speed and is suitable for emergency environments such as fire sites.
Description
Technical Field
The utility model relates to a fire extinguishing bomb, in particular to an electronic delay ignition module of a fire extinguishing bomb head capable of being charged rapidly.
Background
The fire extinguishing bomb is suitable for extinguishing large-area fire in forest, mountain forest, grassland, etc. and is one effective weapon for extinguishing large-area fire. The delayed ignition function of the traditional fire extinguishing bomb is realized by chemical delay gunpowder, and the delay time cannot be changed after the production is completed. The delay time cannot be adjusted according to the current situation in the fire scene, and the method has certain limitation. Thus, electronic fire extinguishing bombs have been developed. The electronic fire extinguishing bomb mainly comprises a transmitting module and a medicine head electronic delay ignition module.
At present, the traditional electronic delay ignition module of the fire extinguishing ammunition head refers to an electronic control module in an industrial digital electronic detonator. The industrial digital electronic detonator is complex in use environment, so that the problem of impact resistance and interference resistance is solved, and a large resistor is usually connected in series on a bus for current limiting, so that the charging speed of the electronic delay ignition module is usually low, and the electronic delay ignition module is not suitable for emergency environments such as a fire scene.
Disclosure of Invention
The utility model aims to solve the technical problem of providing an electronic delay ignition module for a fire extinguishing ammunition head, which has high charging speed and is suitable for emergency environments such as fire sites and the like.
In order to solve the problems, the following technical scheme is provided:
the utility model discloses an electronic delay ignition module of a fire extinguishing ammunition head, which comprises a main control chip U1, an energy storage capacitor C1 and a medicine head. The IN end of the main control chip U1 is connected with one end of a resistor R1, the other end of the resistor R1 is connected with the positive output end of a power supply unit U2, and a control circuit is arranged between the main control chip U1 and the positive output end of the power supply unit U2 and used for controlling whether the IN end of the main control chip U1 is electrified or not. One end of the medicine head is connected with the positive electrode of the energy storage capacitor C1, the negative electrode of the energy storage capacitor C1 is grounded, and a release circuit is arranged between the main control chip U1 and the energy storage capacitor C1 and used for controlling the energy storage capacitor C1 to ignite the medicine head. The power supply is characterized in that the positive output end of the power supply unit U2 is connected with the positive electrode of the energy storage capacitor C1 through a switch, and the main control chip U1 is connected with the switch in an adaptive manner and used for controlling the switch to be turned on or off.
The control circuit comprises a MOS tube N4, wherein the positive output end of the power supply unit U2 is connected with the drain electrode of the MOS tube N4, the source electrode of the MOS tube N4 is grounded to the system, and the grid electrode of the MOS tube N4 is connected with the MOD end of the main control chip U1 so as to control whether the IN end of the main control chip U1 is electrified.
The IN end of the main control chip U1 is connected with the negative electrode of the voltage limiting zener diode D6, and the positive electrode of the voltage limiting zener diode D6 is grounded IN the system.
The switch is a MOS tube N1, the positive output end of the power supply unit U2 is connected with the drain electrode of the MOS tube N1, the source electrode of the MOS tube N1 is connected with the positive electrode of the energy storage capacitor C1 in an adaptive manner, and the grid electrode of the MOS tube N1 is connected with the CHG end of the main control chip U1.
The source electrode of the MOS tube N1 is connected with the positive electrode of the diode D5, and the negative electrode of the diode D5 is connected with the positive electrode of the energy storage capacitor C1.
The release circuit comprises a resistor R2 and a MOS tube N3, wherein the TRIG end of the main control chip U1 is connected with one end of the resistor R2 and the grid electrode of the MOS tube N3, the other end of the resistor R2 is connected with the system ground, one end of the medicine head is connected with the positive electrode of the energy storage capacitor C1, the other end of the medicine head is connected with the drain electrode of the MOS tube N3, and the source electrode of the MOS tube N3 is connected with the system ground.
One end of the medicine head is connected with the positive electrode of the energy storage capacitor C1, and the other end of the medicine head is connected with the CHK end of the main control chip U1.
The DISCH end of the main control chip U1 is connected with the grid electrode of the MOS tube N2, the drain electrode of the MOS tube N2 is connected with the positive electrode of the energy storage capacitor C1, and the source electrode of the MOS tube N2 is grounded.
The VDD end of the main control chip U1 is grounded to the system ground through a capacitor C2, and the GND end of the main control chip U1 is grounded to the system ground.
The power supply unit U2 is a full-bridge circuit, and the negative output end of the full-bridge circuit is the system ground.
By adopting the scheme, the method has the following advantages:
because the positive output end of the power supply unit U2 of the fire extinguishing ammunition head electronic delay ignition module is connected with the positive electrode of the energy storage capacitor C1 through the switch, the main control chip U1 is connected with the switch in an adaptive manner and used for controlling the switch to be turned on or off. The electronic delay ignition module of the fire extinguishing ammunition head can directly charge the energy storage capacitor C1 by utilizing the main control chip U1 to control the switch to be conducted, so that current limitation is not needed through a resistor, the charging speed is high, and the electronic delay ignition module can be suitable for occasions requiring quick response such as a fire scene.
Drawings
Fig. 1 is a schematic structural view of an electronic delay ignition module for a fire extinguishing ammunition head according to the present utility model.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples.
As shown in fig. 1, the electronic delay ignition module of the fire extinguishing ammunition head comprises a main control chip U1, an energy storage capacitor C1 and a head. In this embodiment, the master control chip U1 has a model number DET-0122 manufactured by tin-free core microelectronics Inc. The IN end of the main control chip U1 is connected with one end of a resistor R1, and the other end of the resistor R1 is connected with the positive electrode output end of the power supply unit U2. The IN end of the main control chip U1 is connected with the negative electrode of the voltage limiting zener diode D6, and the positive electrode of the voltage limiting zener diode D6 is grounded IN the system. The resistor R1 is a current limiting resistor, and the resistor R1 and the voltage limiting zener diode D6 jointly perform overcurrent and overvoltage protection on the main control chip U1.
And a control circuit is arranged between the main control chip U1 and the positive output end of the power supply unit U2 and is used for controlling whether the IN end of the main control chip U1 is electrified. IN this embodiment, the control circuit includes a MOS transistor N4, the positive output end of the power supply unit U2 is connected to the drain electrode of the MOS transistor N4, the source electrode of the MOS transistor N4 is grounded, and the gate electrode of the MOS transistor N4 is connected to the MOD end of the main control chip U1, so as to control whether the IN end of the main control chip U1 is powered. When the MOD end outputs high level, the MOS transistor N4 is conducted, and the resistance value is larger because the R1 is a current limiting resistor, the positive output end of the power supply unit U2 is pulled down to the ground, and the IN end of the main control chip U1 is powered off. When MOD is low, N4 is closed, and the IN end of the main control chip U1 is powered on again.
One end of the medicine head is connected with the positive electrode of the energy storage capacitor C1, the negative electrode of the energy storage capacitor C1 is grounded, and a release circuit is arranged between the main control chip U1 and the energy storage capacitor C1 and used for controlling the energy storage capacitor C1 to ignite the medicine head. In this embodiment, the source electrode of the MOS transistor N1 includes a resistor R2 and a MOS transistor N3, the TRIG end of the main control chip U1 is connected to one end of the resistor R2 and the gate electrode of the MOS transistor N3, the other end of the resistor R2 is connected to the system ground, one end of the drug head is connected to the positive electrode of the energy storage capacitor C1, the other end of the drug head is connected to the drain electrode of the MOS transistor N3, and the source electrode of the MOS transistor N3 is grounded. The resistor R2 is a pull-down resistor of the grid electrode of the MOS tube N3, and the MOS tube N3 is in an off state when the chip is electrified unsteadily. When the main control chip U1 receives a trigger instruction, the inside of the main control chip U1 can count down according to the stored time, after the count down is finished, the TRIG end of the main control chip U1 becomes high level, the MOS tube N3 is conducted, the medicine head and the energy storage capacitor C1 form a passage, and the energy on the energy storage capacitor C1 is instantly released through the medicine head and the MOS tube N3 to ignite the medicine head.
The positive output end of the power supply unit U2 is connected with the positive electrode of the energy storage capacitor C1 through a switch, and the main control chip U1 is connected with the switch in an adaptive manner and used for controlling the switch to be turned on or off. The main control chip U1 controls the switch to be conducted, and the power supply unit U2 can directly charge the energy storage capacitor, so that current limiting through a resistor is not needed, the charging speed is high, and the device can be suitable for occasions requiring quick response such as a fire scene.
In this embodiment, the switch is a MOS transistor N1, the output end of the positive electrode of the power supply unit U2 is connected to the drain electrode of the MOS transistor N1, the source electrode of the MOS transistor N1 is connected to the positive electrode of the diode D5, the negative electrode of the diode D5 is connected to the positive electrode of the energy storage capacitor C1, and the gate electrode of the MOS transistor N1 is connected to the CHG end of the main control chip U1. When the main control chip U1 receives a charging instruction, the CHG end of the main control chip U1 becomes high level, the MOS tube N1 is conducted, and the voltage of the positive output end of the power supply unit U2 charges the energy storage capacitor C1 through the MOS tube N1 and the diode D5. The diode D5 is used for preventing reverse conduction leakage.
In this embodiment, one end of the medicine head is connected to the positive electrode of the energy storage capacitor C1, and the other end of the medicine head is connected to the CHK end of the main control chip U1. The CHK end of the main control chip U1 is used for checking the on-off of the medicine head.
In this embodiment, the DISCH end of the main control chip U1 is connected to the gate of the MOS transistor N2, the drain of the MOS transistor N2 is connected to the positive electrode of the energy storage capacitor C1, and the source of the MOS transistor N2 is grounded. The MOS transistor N2 forms a discharge loop. When the main control chip U1 receives a discharging instruction, the MOS tube N2 is conducted, and the charge stored on the energy storage capacitor C1 is released through the N2.
In this embodiment, the VDD terminal of the main control chip U1 is grounded to the system ground through a capacitor C2, and the GND terminal of the main control chip U1 is grounded to the system ground. The capacitor C2 is a filter capacitor.
The power supply unit U2 is a full-bridge circuit, and the negative output end of the full-bridge circuit is the system ground. The full-bridge circuit is composed of a diode D1, a diode D2, a diode D3 and a diode D4, and the two input ends IN1 and IN2 of the full-bridge circuit realize no-limit input.
When in use, the input ends at two ends of the power supply unit U2 are connected with a power supply, and the delay inside the main control chip U1 is set. When the device works, the main control chip U1 firstly detects whether the medicine head is on or off; then, controlling the MOS tube N1 to be conducted, and charging the energy storage capacitor; then, after the time delay is finished, the main control chip U1 controls the MOS tube N3 to be conducted, the medicine head and the energy storage capacitor C1 form a passage, the energy on the energy storage capacitor C1 is instantaneously released through the medicine head and the MOS tube N3, and the medicine head is ignited to be released.
Claims (10)
1. An electronic delay ignition module of a fire extinguishing ammunition head comprises a main control chip U1, an energy storage capacitor C1 and a head; the IN end of the main control chip U1 is connected with one end of a resistor R1, the other end of the resistor R1 is connected with the positive output end of a power supply unit U2, and a control circuit is arranged between the main control chip U1 and the positive output end of the power supply unit U2 and used for controlling whether the IN end of the main control chip U1 is electrified or not; one end of the medicine head is connected with the positive electrode of the energy storage capacitor C1, the negative electrode of the energy storage capacitor C1 is grounded, and a release circuit is arranged between the main control chip U1 and the energy storage capacitor C1 and used for controlling the energy storage capacitor C1 to ignite the medicine head; the power supply is characterized in that the positive output end of the power supply unit U2 is connected with the positive electrode of the energy storage capacitor C1 through a switch, and the main control chip U1 is connected with the switch in an adaptive manner and used for controlling the switch to be turned on or off.
2. The electronic delay ignition module of fire extinguishing ammunition head according to claim 1, wherein the control circuit comprises a MOS tube N4, the positive output end of the power supply unit U2 is connected with the drain electrode of the MOS tube N4, the source electrode of the MOS tube N4 is grounded to the system, and the grid electrode of the MOS tube N4 is connected with the MOD end of the main control chip U1 so as to control whether the IN end of the main control chip U1 is electrified.
3. The electronic delay ignition module of fire extinguishing ammunition head as claimed IN claim 1, wherein the IN end of the main control chip U1 is connected with the negative electrode of the voltage limiting zener diode D6, and the positive electrode of the voltage limiting zener diode D6 is connected with the system ground.
4. The electronic delay ignition module of the fire extinguishing ammunition head according to claim 1, wherein the switch is a MOS tube N1, the positive output end of the power supply unit U2 is connected with the drain electrode of the MOS tube N1, the source electrode of the MOS tube N1 is connected with the positive electrode of the energy storage capacitor C1 in an adaptive manner, and the grid electrode of the MOS tube N1 is connected with the CHG end of the main control chip U1.
5. The electronic delay ignition module of fire extinguishing ammunition head according to claim 4, wherein a source electrode of the MOS tube N1 is connected with an anode of a diode D5, and a cathode of the diode D5 is connected with an anode of an energy storage capacitor C1.
6. The fire extinguishing ammunition head electronic delay ignition module according to claim 1, wherein the release circuit comprises a resistor R2 and a MOS tube N3, the TRIG end of the main control chip U1 is connected with one end of the resistor R2 and the grid electrode of the MOS tube N3, the other end of the resistor R2 is connected with the system ground, one end of the medicine head is connected with the positive electrode of the energy storage capacitor C1, the other end of the medicine head is connected with the drain electrode of the MOS tube N3, and the source electrode of the MOS tube N3 is grounded.
7. The electronic delay ignition module of the fire extinguishing ammunition head according to claim 1, wherein one end of the ammunition head is connected with the positive electrode of the energy storage capacitor C1, and the other end of the ammunition head is connected with the CHK end of the main control chip U1.
8. The electronic delay ignition module of fire extinguishing ammunition head according to claim 1, wherein a DISCH end of the main control chip U1 is connected with a grid electrode of a MOS tube N2, a drain electrode of the MOS tube N2 is connected with an anode of the energy storage capacitor C1, and a source electrode of the MOS tube N2 is grounded.
9. The electronic delay ignition module of fire extinguishing ammunition head according to claim 1, wherein VDD terminal of the main control chip U1 is grounded through a capacitor C2, and GND terminal of the main control chip U1 is grounded.
10. The fire extinguishing ammunition head electronic delay ignition module according to any one of claims 1 to 9, wherein the power supply unit U2 is a full bridge circuit, and the negative output end of the full bridge circuit is the system ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223126262.1U CN219121219U (en) | 2022-11-24 | 2022-11-24 | Electronic delay ignition module for fire extinguishing ammunition head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223126262.1U CN219121219U (en) | 2022-11-24 | 2022-11-24 | Electronic delay ignition module for fire extinguishing ammunition head |
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| Publication Number | Publication Date |
|---|---|
| CN219121219U true CN219121219U (en) | 2023-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223126262.1U Active CN219121219U (en) | 2022-11-24 | 2022-11-24 | Electronic delay ignition module for fire extinguishing ammunition head |
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|---|---|
| CN (1) | CN219121219U (en) |
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- 2022-11-24 CN CN202223126262.1U patent/CN219121219U/en active Active
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