CN212347727U

CN212347727U - Model rocket igniter based on super capacitor

Info

Publication number: CN212347727U
Application number: CN202020228110.4U
Authority: CN
Inventors: 李易; 王文豪; 杨德敏; 崔佳豪
Original assignee: Northwestern Polytechnical University
Current assignee: Northwestern Polytechnical University
Priority date: 2020-02-28
Filing date: 2020-02-28
Publication date: 2021-01-15
Anticipated expiration: 2030-02-28

Abstract

The invention provides a model rocket igniter based on a super capacitor, belonging to the field of model rockets; the LED ignition device comprises a knob switch, an emission button, an LED indicator lamp, an ignition head interface, a shell and a control circuit; the shell is of a detachable split box body structure, the knob switch, the emission button and the LED indicator lamp are all arranged on one side wall surface of the shell, the ignition head interface is arranged on the other side wall surface of the shell, and the control circuit is arranged in the shell; the knob switch comprises a knob switch 1 gear and a knob switch 2 gear, and the LED indicator lamp is a light emitting diode; the control circuit comprises a lithium ion battery, a protection resistor R and a super capacitor C; the ignition head is more reliably ignited by adopting the charging and discharging of the rechargeable lithium battery and the super capacitor, and the LED lamp is adopted to indicate the emission state, so that the emission is safer.

Description

Model rocket igniter based on super capacitor

Technical Field

The invention belongs to the field of model rockets, and particularly relates to a model rocket igniter based on a super capacitor.

Background

With the gradual development of aerospace science popularization culture, the launching of small rockets such as small solid rocket performance, scientific research rocket model competition and the like is more common to enter the life of ordinary people, so that a safe and reliable ignition device needs to be provided.

The existing similar device is mainly a small handheld igniter designed and produced by a medium rocket company (four Kai model), as shown in figures 1 and 2, the picture sources are as follows: igniter instructions sold by Zhongtian rocket corporation (four Keys model). The device mainly comprises a power supply, a safety pin, an indicator light, a transmitting button, a plastic shell, a lead, a crocodile clip and the like. When the alligator clip switches on the igniter and simultaneously inserts the safety pin, the internal circuit is switched on and the indicator light lights up. When the firing button is pressed, the metal sheet short-circuits the internal resistor and the light-emitting diode, the circuit current is increased, and the ignition head is ignited. Problems with this igniter:

a. the plastic shell has insufficient sealing performance and has great danger when being emitted in severe environments such as rain and snow;

b. the internal power supply is provided by a dry battery, the battery has small capacity and low voltage, and cannot be charged, so that the environmental pollution is easily caused;

c. the instantaneous discharge current is small, and the large-resistance ignition head cannot be ignited;

d. the firing button is susceptible to shock causing misfires.

Disclosure of Invention

The technical problem to be solved is as follows:

in order to avoid the defects of the prior art, the invention provides a model rocket igniter based on a super capacitor, which enhances the shell sealing property to adapt to launching tasks in different launching scenes (particularly in severe environment); a novel power supply is adopted, so that larger battery capacity and power supply voltage are provided, and the rechargeable battery is chargeable; by adopting a novel circuit structure, large current is generated, and the ignition head is ensured to be successfully ignited; and a more reliable launching button is adopted, so that the launching safety is improved.

The technical scheme of the invention is as follows: a model rocket igniter based on super capacitor is characterized in that: the LED ignition device comprises a knob switch, an emission button, an LED indicator lamp, an ignition head interface, a shell and a control circuit; the shell is of a detachable split box body structure, the knob switch, the emission button and the LED indicator lamp are all arranged on one side wall surface of the shell, the ignition head interface is arranged on the other side wall surface of the shell, and the control circuit is arranged in the shell; the knob switch comprises a knob switch 1 gear and a knob switch 2 gear, and the LED indicator lamp is a light emitting diode;

the control circuit comprises a lithium ion battery, a protection resistor R and a super capacitor C; the lithium ion battery is used as a direct current power supply U, the anode of the lithium ion battery is sequentially connected with a knob switch 1 gear S1, a light emitting diode and an ignition head interface OUT1 in series, and the cathode of the lithium ion battery is connected with the ignition head interface OUT 2; the knob switch 2 gear S2 is connected in series with a protection resistor R and then connected in parallel with the direct current power supply U and the knob switch 1 gear S1, and is connected in parallel with the super capacitor C, and the emission button is used as a normally open switch S3 and connected in parallel with the light emitting diode; all the components are connected through wires.

The further technical scheme of the invention is as follows: the shell is made of metal aluminum and comprises a main shell, a metal rear cover and a battery cover plate; the main shell is of a box body structure with an opening at one side, and the metal rear cover is embedded into the opening of the main shell and is fixed along the circumferential direction through four countersunk head screws; the battery cover plate is embedded in a battery mounting hole formed in the metal rear cover and is fixed by a countersunk head screw.

The further technical scheme of the invention is as follows: the joint of the shell is sealed by sealant.

The further technical scheme of the invention is as follows: the lithium ion battery is a 9V rechargeable lithium ion battery.

Advantageous effects

The invention has the beneficial effects that:

1. the invention adopts the embedded assembly of the metal shell, so that the shell has stronger sealing property and shock resistance, and meets the use requirement under worse conditions;

2. the service life of the igniter can be greatly prolonged by adopting the rechargeable lithium ion battery with high energy density; higher voltage and capacitance ensure more reliable ignition;

3. the parallel super capacitor C is charged and discharged for ignition, S3 is closed, the super capacitor C is directly connected into a circuit, and instantaneous large current is released to ensure the ignition reliability;

4. by adopting the structure that the protective resistor R and the knob switch are connected with the super capacitor C in parallel, the residual electric quantity after ignition is finished can be released, the capacitor can be protected, and the service life is prolonged.

5. And the light emitting diode is adopted to indicate the emitting state, so that the circuit state is better judged, and the emitting is safer and more reliable.

Drawings

FIG. 1 is a schematic representation of the use of a prior art igniter;

FIG. 2 is a general block diagram of a prior art igniter;

FIG. 3 is an external view of the igniter of the invention;

FIG. 4 is a rear elevational view of an igniter of the invention;

fig. 5 is a control circuit diagram of the igniter of the invention.

Description of reference numerals: 1. knob switch, 2 emission buttons, 3 LED indicator lamps, 4 ignition head interfaces, 5 main shell, 6 metal rear cover, 7 battery cover plate.

Detailed Description

The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

Referring to fig. 3 and 4, the model rocket igniter based on the super capacitor comprises a knob switch 1, a launching button 2, an LED indicator lamp 3, an ignition head interface 4, a shell and a control circuit; the shell is of a detachable split box structure and made of metal aluminum, and comprises a main shell 5, a metal rear cover 6 and a battery cover plate 7; the main shell 1 is a box structure with an opening at one side, and the metal rear cover 6 is embedded into the opening of the main shell 5 and is fixed along the circumferential direction through four countersunk head screws; the battery cover plate 7 is embedded in a battery mounting hole formed in the metal rear cover 6 and is fixed by a countersunk head screw. The joint of the shell is sealed by sealant.

The knob switch 1, the emission button 2 and the LED indicator lamp 3 are all arranged on one side wall surface of the shell, the ignition head interface 4 is arranged on the other side wall surface of the shell, and the control circuit is arranged in the shell; the knob switch 1 comprises a knob switch 1 gear and a knob switch 2 gear, and the LED indicator lamp 3 is a light emitting diode; the lithium ion battery is a 9V rechargeable lithium ion battery, has higher voltage, larger battery capacity and energy density, and can be charged, and the service life of the igniter is prolonged.

Referring to fig. 5, the control circuit includes a lithium ion battery, a protection resistor R, and a super capacitor C; the lithium ion battery is used as a direct current power supply U, the anode of the lithium ion battery is sequentially connected with a knob switch 1 gear S1, a light emitting diode and an ignition head interface OUT1 in series, and the cathode of the lithium ion battery is connected with the ignition head interface OUT 2; the knob switch 2 gear S2 is connected in series with a protection resistor R and then connected in parallel with the direct current power supply U and the knob switch 1 gear S1, and is connected in parallel with the super capacitor C, and the emission button is used as a normally open switch S3 and connected in parallel with the light emitting diode; all the components are connected through wires.

The ignition head interface 4 is connected in series with an ignition head which needs to be ignited from the outside, the knob switch 1 controls charging and discharging of the internal super capacitor C, and the emission button 2 controls ignition of the ignition head.

And (4) safety state: when the knob switch 1 is in the 1-position, i.e., S1 is open, S2 is closed, and S3 is open, the whole circuit is in a safety state, and no current flows in the circuit.

And (3) detecting the state: when the knob switch 1 is in the 2-position, i.e., S1 is closed, S2 is opened, and S3 is opened, the super capacitor C is charged by the direct-current power supply. At this time, if the ignition head is connected to the ignition head interface 4, the ignition head is equivalent to a resistor which is connected in series to enter the circuit, the loop is conducted, the LED indicating lamp 3 is turned on, and the brightness is increased along with the rise of the voltage at the two ends of the super capacitor C. Further, the state of the LED indicator light 3 can indicate the emission state, when the light is not on, the circuit is broken, and the circuit needs to be checked again after the power supply is cut off; when the LED indicator lamp 3 gradually becomes bright, the circuit is normal, and emission can be carried out.

And (3) a transmitting state: when the brightness of the LED indicator lamp 3 reaches the specified brightness, namely the voltage across the super capacitor C reaches the specified voltage, the emission button 2 is pressed, namely S3 is closed. At the moment, the LED indicating lamp 3 is broken, the current in the loop is increased instantly, and the ignition head is ignited to finish the transmitting task.

And (4) ending the emission: when the emission is finished, a certain amount of charges may still exist in the super capacitor C, at this time, the knob switch is pulled back to the 1-position of the knob switch, i.e., S1 is turned off, S2 is turned on, and S3 is turned off, and the protection resistor R and the capacitor form a discharge loop to completely release the residual charges.

The ignition head is more reliably ignited by adopting the charging and discharging of the rechargeable lithium battery and the super capacitor, and the LED lamp is adopted to indicate the emission state, so that the emission is safer.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.

Claims

1. A model rocket igniter based on super capacitor is characterized in that: the LED ignition device comprises a knob switch, an emission button, an LED indicator lamp, an ignition head interface, a shell and a control circuit; the shell is of a detachable split box body structure, the knob switch, the emission button and the LED indicator lamp are all arranged on one side wall surface of the shell, the ignition head interface is arranged on the other side wall surface of the shell, and the control circuit is arranged in the shell; the knob switch comprises a knob switch 1 gear and a knob switch 2 gear, and the LED indicator lamp is a light emitting diode;

2. The supercapacitor-based model rocket igniter of claim 1, wherein: the shell is made of metal aluminum and comprises a main shell, a metal rear cover and a battery cover plate; the main shell is of a box body structure with an opening at one side, and the metal rear cover is embedded into the opening of the main shell and is fixed along the circumferential direction through four countersunk head screws; the battery cover plate is embedded in a battery mounting hole formed in the metal rear cover and is fixed by a countersunk head screw.

3. The supercapacitor-based model rocket igniter of claim 1, wherein: the joint of the shell is sealed by sealant.

4. The supercapacitor-based model rocket igniter of claim 1, wherein: the lithium ion battery is a 9V rechargeable lithium ion battery.