CN210625487U

CN210625487U - Novel electromagnetic induction type firework machine power supply

Info

Publication number: CN210625487U
Application number: CN201921229766.1U
Authority: CN
Inventors: 李宝华; 随元东
Original assignee: Foshan Ranzhi Electronic Technology Co Ltd
Current assignee: Foshan Ranzhi Electronic Technology Co Ltd
Priority date: 2019-08-01
Filing date: 2019-08-01
Publication date: 2020-05-26
Anticipated expiration: 2029-08-01

Abstract

The utility model discloses a novel electromagnetic induction type firework machine power supply applied to a stage, which is mainly characterized in that a rectification filter circuit rectifies and filters power grid voltage, then the filtered direct current voltage is converted into alternating current through a half-bridge inverter circuit, and the rectification filter circuit is connected with the power grid voltage; the half-bridge inverter circuit is connected with the rectifying and filtering circuit; an inverter of the half-bridge inverter circuit is connected with a driving circuit, and the other end of the driving circuit is connected with a processor circuit; the detection circuit is connected with the loop of the rectification filter circuit, and the other end of the detection circuit is connected with the processor circuit; the switch circuit is connected with the processor circuit; the temperature detection circuit is connected with the radiating fin, and the other end of the temperature detection circuit is connected with the processor circuit; the power supply circuit supplies electric energy to the digital device; therefore, the circuit is monitored and protected more safely and effectively, the heat efficiency utilization rate is high, and the energy conservation and the environmental protection are realized.

Description

Novel electromagnetic induction type firework machine power supply

Technical Field

The utility model belongs to a novel electromagnetic induction formula fireworks machine power is applied to fields such as the electromagnetic heating of stage.

Background

At present, the traditional fireworks in the market adopt chemical combustion and explosion to create effects, and the defects are that 1, toxic gas generated after combustion causes great pollution to the environment, and 2, the fireworks are heavy and inconvenient to carry. 3. The application is limited and can only be set off in an open area. 4. 5, noise pollution, uncontrollable setting off and poor safety. To the traditional fireworks, certainly, electronic fireworks machines have been raised in recent years, but the electronic fireworks machines currently adopt resistance wires to heat the heating barrel, and have the defects of low efficiency of converting electric energy into heat energy, waste of electric energy and low circuit safety performance. Aiming at the defects, the design of the novel firework machine which is practical, safe, reliable and pollution-free is produced. The utility model discloses electronic fireworks's design has thoroughly changed too many limitations and the unsafe factor of traditional fireworks machine. The novel electronic firework machine is a gunpowder-free and smog-free cold flame device, the product is developed by taking environmental protection and innocuity as an idea, the heat utilization rate is improved to the greatest extent by adopting an electromagnetic heating mode, and the disadvantages of traditional firework pollution, large application range limitation and poor safety performance are thoroughly solved fundamentally.

Disclosure of Invention

To the defect that above-mentioned traditional fireworks exists, can't realize advantages such as the practicality is strong, safe and reliable, pollution-free, convenient to carry, easy operation, the utility model discloses the inventor is engaged in fireworks machine trade many years, through studying the argument repeatedly, must produce eventually the utility model relates to a novel production of electromagnetic induction formula fireworks machine power.

To the above prior art, the utility model aims at: the novel power supply equipment is novel in environmental protection and high in electric energy utilization rate, changes the problems of gas pollution, noise pollution and poor safety of the traditional firework machine, adopts the electromagnetic heating principle, and generates adjustable and controllable high-frequency voltage by controlling the on-off of the IGBT. Thereby controlling the resonance capacitance and the oscillation of the electromagnetic coil. The detection circuit is used for monitoring the magnitude of the current, and if the overcurrent occurs, the automatic turn-off equipment is protected, so that the safety and reliability of the system are improved. The design adopts pure electric circuit design, has no noise and no gas, and is green, energy-saving and environment-friendly.

In order to solve the technical problem, the utility model discloses electromagnetic induction formula fireworks machine power mainly includes mainly by rectification filter circuit to grid voltage rectification filtering, then changes the direct current voltage after the filtration into alternating current, its characterized in that again through half-bridge inverter circuit: the rectification filter circuit is connected with the voltage of the power grid; the half-bridge inverter circuit is connected with the rectifying and filtering circuit; an inverter of the half-bridge inverter circuit is connected with a driving circuit, and the other end of the driving circuit is connected with a processor circuit; the detection circuit is connected with the loop of the rectification filter circuit, and the other end of the detection circuit is connected with the processing circuit; the switch circuit is connected with the processor circuit; the temperature detection circuit is connected with the radiating fin, and the other end of the temperature detection circuit is connected with the processor circuit; the power supply circuit supplies electric energy to various digital devices, the rectifier filter circuit adopts the module type rectifier bridge to rectify the power supply, the filter adopts the high-voltage capacitor to filter, the half-bridge inverter circuit comprises two IGBTs (insulated gate bipolar transistors), namely Q1 and Q2, which are connected in series, and the resistor R8 and the diode D4 are connected in parallel at a gate pole, so that the circuit is quickly turned off. The resistor R9 is connected in parallel between a gate and an emitting stage, a current loop is provided for the Q1, so that the Q1 is protected, the driving circuit adopts a separate highly integrated digital driving chip, the driving chip is an IR2110 driving chip, and the internal functions of the IR2110 driving chip are composed of three parts: a logic input; the detection circuit is connected with a bus circuit of the rectifying and filtering circuit, the obtained signal is transmitted to the processing circuit for processing through a voltage comparator and a voltage follower by detecting the sampling voltage of the bus circuit, the switch circuit adopts a light coupling pull-up resistor R12, a C6 and a current limiting resistor R21 to be connected with an external switch, the temperature detection circuit adopts a thermistor as a temperature detection device which is directly connected on a radiator, and the power supply circuit is characterized in that the rectified direct current voltage performs voltage stabilization filtering on the bus voltage through a diode D6, a power chip VIPER12A, a transformer T1 and peripheral devices and then is converted into the direct current voltage required by the circuit.

In order to solve the above problem, the utility model discloses the theory of operation of electromagnetic induction formula fireworks machine power does: the high-frequency controllable alternating current is generated by rectifying, filtering and inverting the voltage of a 220V power grid, the high-frequency alternating current controls a capacitor and an electromagnetic induction line to generate oscillation to generate an alternating magnetic field, alternating current is generated by cutting the induction line by a magnetic conductive substance, eddy current enables metal atoms to collide irregularly at high speed, heat energy is generated by friction, and therefore the purpose of heating can be achieved. The novel power supply generates PWM to drive the chip IR2110, so that the IGBT is rapidly switched on and off. The current detection module detects the current state of the circuit in real time, and once the current is detected to be overhigh, the protection mode is started immediately. The temperature monitoring adopts a temperature sensor, and the temperature is intelligently monitored; the utility model discloses the technological effect who reaches does: 1. the utility model discloses power supply circuit has designed current detection and temperature monitoring module safe effectual circuit of keeping watch on the protection more. 2. The electromagnetic heating is adopted as a basic principle, so that the heat efficiency utilization rate is high, and the energy-saving and environment-friendly effects are achieved.

The utility model discloses the characteristics of electromagnetic induction formula fireworks machine power do:

1. strong practicability, convenient carrying, simple operation and the like.

2. Safe and reliable, no pollution and no potential safety hazard to human body.

3. The efficiency of converting electric energy into heat energy is high, the electric energy is saved, and the safety performance of the circuit is high.

Description of the drawings:

FIG. 1 is a schematic view of the overall principle of the power supply of the electromagnetic induction firework machine

FIG. 2 is a schematic diagram of the processing circuit principle of the power supply of the electromagnetic induction firework machine

FIG. 3 is a schematic diagram of the driving circuit principle of the power supply of the electromagnetic induction firework machine

FIG. 4 is the schematic diagram of the principle of the half-bridge inverter circuit of the power supply of the electromagnetic induction firework machine

FIG. 5 is a schematic diagram of the switching circuit principle of the power supply of the electromagnetic induction firework machine

FIG. 6 is a schematic diagram of the power supply circuit of the power supply of the electromagnetic induction firework machine

Description of reference numerals: 1. the device comprises a power grid voltage 2, a rectifying and filtering circuit 3, a half-bridge inverter circuit 4, a detection circuit 5, a processor circuit 6, a drive circuit 7 and a temperature detection circuit.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments, and embodiments of the present invention will be described in detail with reference to specific embodiments in order to make the understanding of the present invention easier.

As shown in the schematic block diagram of fig. 1, the system power supply generates direct current from a power grid voltage 1 through rectification and filtering and then generates controllable alternating current through a half-bridge inverter circuit 3. The system peripheral circuit comprises an IGBT driving circuit, an overcurrent detection circuit, a temperature detection circuit 7 and a processor circuit 5.

Referring to fig. 2, the PIC12F1572 has its 1 st pin connected to +5V power supply to power the chip, 2 pins connected to R1 to generate PWMIH, and 3 pins connected to R2 to generate PWM 1L; the 4-pin MCLR is connected with the optical coupling switch circuit; the pin 5 is connected with the pin R5 and the pin 6 of the LED power indicator lamp and is connected with the current detection module through the pin R4, so that the current condition in the circuit is monitored in real time; the 7 pin is connected with a J1 temperature detection module through R3, and the external temperature is detected in real time; the 8-pin is connected to ground.

FIG. 3 shows a driving circuit 6, which is composed of a driving chip IR2110, a filter capacitor and a diode, and a 1 pin is connected with a J3 half-bridge inverter circuit; a capacitor C3 is connected between the pin 2 and the pin 3;

pins

4 and 5 are not connected; pin 6 is connected with a +18V power supply through C2 and D3; pin 7 is connected with a +18V power supply through D3; 8 pins J2 are connected with a half-bridge inverter circuit;

pins

9 and 10 are not connected; the 11 pin is connected with a +5V power supply; the 12 pins are connected with PWMIH;

pins

13 and 15 are connected to ground; pin 14 is connected with PWM 1L; the 16 pins are not connected.

For example, in fig. 4, the half-bridge inverter circuit 3 is shown, Q1 and Q2 are IGBTs, and Q1, Q2, C4 and C5 form a basic inverter circuit.

D4 and R8 are connected in parallel and then connected in series with Q1, the collector of Q1 is connected with the emitter parallel capacitor C4, D5 and R10 are connected in parallel and then connected in series with Q2, the collector of Q1 is connected with the emitter parallel capacitor C5, and R9 is connected in parallel between the emitters and the collectors of Q1 and Q2. J5 and J7 are connected with a rectifying circuit, and J6 is connected with a load electromagnetic induction coil. J2, J3 and J4 are connected with the driving circuit.

Fig. 5 shows a switch circuit, a PC817 is an optocoupler chip, and a pin 1 is connected to a power supply 10V; the 2 pin is connected with the 2 pin of CN1 after being connected with R21, and the 3 pin is connected with the ground; the 4 pins are connected with a 5V power supply through a resistor R12; MCLR is directly connected with 4 pins; c6 connects between

pins

3 and 4.

The temperature detection circuit 7 is characterized in that CN2 is externally connected with a temperature sensor, a pin 1 is connected with an R6 and a +5V power supply and then connected with R7 in parallel to be connected with J1, a pin 2 is directly connected with the ground, and a capacitor C1 is connected between the J1 and the pin 2;

the current detection circuit comprises a voltage comparator circuit consisting of R15 and R16, R22 and R23, R17 and C7, and is connected with a voltage comparator after being connected with R8 in series, and the voltage comparator is connected with R19 in series and connected with IAD; c8, C9 and C10 are connected with the ground J7 to be connected with the rectifier circuit;

in the rectifying circuit, the voltage of the power grid is rectified into direct current through a rectifying bridge after being filtered by C11, and then the rectified current is filtered through a capacitor C12. J5 and J7 connect the inverter half bridge modules.

For the power supply circuit shown in fig. 6, J15 is connected to the positive pole of the rectified bus, and the bus voltage is regulated and filtered by the power chip VIPER12A, the transformer T1 and the peripheral filter, and then converted into the dc voltage required by the circuit. Where

pins

1 and 2 of VIPER12A are connected to ground; the 3 pins are connected with the ground through C15, and the 3 pins are connected with a secondary side circuit of the transformer through a ZD1 voltage-regulator tube; 5678 the pins are connected together to connect with the primary side of the transformer, and the secondary side generates 10vV voltage through C8D8R 25; the secondary side generates a 5V voltage through D10, R24, C19, C20, D9, C16 and C17; the LED1 is a power supply operation indicator light.

In summary, the contents and the embodiments of the novel electromagnetic induction type power supply for fireworks according to the present invention are only for the purpose of clearly explaining the essence and the connotation of the present invention by way of example, and are not limited to the variation on the basis of the concept of the present invention, and the technical personnel in the field can arbitrarily change the concept of the present invention, but still belong to the protection scope of the present invention if it is based on the idea of the present invention in combination with the common knowledge and the conventional means in the field.

Claims

1. Novel electromagnetic induction formula fireworks machine power mainly is by rectification filter circuit (2) to grid voltage (1) rectification filter, then changes the direct current voltage after filtering into alternating current, its characterized in that again through half-bridge inverter circuit (3): the rectification filter circuit (2) is connected with the power grid voltage (1); the half-bridge inverter circuit (3) is connected with the rectifying and filtering circuit (2); an inverter of the half-bridge inverter circuit (3) is connected with a drive circuit (6), and the other end of the drive circuit (6) is connected with a processor circuit (5); the detection circuit (4) is connected with the loop of the rectification filter circuit (2), and the other end of the detection circuit is connected with the processor circuit (5); the switch circuit is connected with the processor circuit (5); the temperature detection circuit (7) is connected with the radiating fin, and the other end of the temperature detection circuit is connected with the processor circuit (5); the power supply circuit supplies electric energy to the digital device.

2. The novel electromagnetic induction type firework machine power supply of claim 1, wherein: the rectification filter circuit (2) adopts a module type rectifier bridge to rectify the power supply, and the filter adopts a high-voltage capacitor to filter.

3. The novel electromagnetic induction type firework machine power supply as claimed in claim 1, wherein: the half-bridge inverter circuit (3) comprises two IGBTs (namely Q1 and Q2) which are connected in series, and a resistor R8 and a diode D4 are connected in parallel at a gate pole to provide a quick turn-off loop for the circuit.

4. The novel electromagnetic induction type firework machine power supply of claim 1, wherein: the resistor R9 is connected in parallel between the gate and the emitter to provide a current loop for Q1, thereby protecting Q1.

5. The novel electromagnetic induction type firework machine power supply as claimed in claim 1, wherein: the driving circuit (6) adopts an independent highly integrated digital driving chip, the driving chip is an IR2110 driving chip, and the internal function of the IR2110 driving chip consists of three parts: a logic input; level shifting and output protection.

6. The novel electromagnetic induction type firework machine power supply as claimed in claim 1, wherein: the detection circuit (4) is connected with a bus circuit of the rectification filter circuit, and the obtained signals are transmitted to the processing circuit for processing through the voltage comparator and the voltage follower by detecting the sampling voltage of the bus circuit.

7. The novel electromagnetic induction type firework machine power supply as claimed in claim 1, wherein: the switch circuit adopts an optical coupling to connect pull-up resistors R12, C6 and a current limiting resistor R21 to connect an external switch.

8. The novel electromagnetic induction type firework machine power supply as claimed in claim 1, wherein: the temperature detection circuit (7) adopts a thermistor as a temperature detection device, and is directly connected to the radiator.

9. The novel electromagnetic induction type firework machine power supply as claimed in claim 1, wherein: the power supply circuit is characterized in that rectified direct current voltage passes through a diode D6, a power chip VIPER12A, a transformer T1 and peripheral devices to perform voltage stabilization and filtering on bus voltage and then is converted into direct current voltage required by the circuit.