Intelligent ignition circuit, ignition box and firework setting-off device

Abstract

The utility model belongs to the technical field of firework setting-off, and discloses an intelligent ignition circuit, an ignition box and a firework setting-off device. The circuit comprises a power supply, a change-over switch, a current detector, a microcontroller and an ignition control loop, the power supply provides electric energy for the ignition control loop; the ignition control loop comprises a tungsten filament ignition control loop and a small red head ignition control loop; the change-over switch is used for switching the tungsten filament ignition control loop and the small red head ignition control loop; the current detector collects a current signal in the ignition control loop; the microcontroller receives the current signal and the switching signal and transmits a control signal to the ignition control loop. According to the utility model, tungsten filament and small red head ignition can be compatible, and ignition failure or poor set-off effect caused by misoperation can be prevented; ignition delay arrangement can be achieved through a nixie tube and keys, the combined setting-off effect is achieved, display is visual and accurate, and operation is convenient and fast; the device is small in structure, safe, convenient, easy to transport and low in cost.

Description

Technical Field

[0001] This utility model belongs to the field of fireworks display technology, and specifically relates to an intelligent ignition circuit, ignition box and fireworks display device. Background Technology

[0002] In recent years, personal consumer fireworks have experienced rapid development, and the ignition methods of these fireworks have also gained attention. Traditional personal consumer fireworks require each firework to be lit manually, which poses a risk of personal injury due to the close proximity to the firework. Furthermore, manually lighting the fuse makes it difficult to achieve the desired ignition effect.

[0003] Existing technologies are increasingly adopting tungsten filament or small red-tipped ignition heads to replace manual fuses. Tungsten filament igniters or small red-tipped igniters enable remote electronic ignition, providing a basis for choreographed and controlled fireworks displays. Tungsten filament and small red-tipped ignition heads are two different electric ignition methods. Tungsten filaments are purely resistive, requiring a longer ignition time, typically in the order of seconds. They can be directly bonded to the fuse during fireworks production and transportation. Small red-tipped igniters, on the other hand, use a heating resistor with added explosives, resulting in a shorter ignition time, typically in the order of milliseconds. Therefore, the ignition voltage required for tungsten filaments is longer than that required for small red-tipped ignition heads, and the duration of the ignition is also longer. During fireworks production and transportation, small red-tipped igniters cannot be directly bonded to the fuse; they can only be connected on-site during the fireworks setup. Figure 1 As shown, the current in the circuits of the tungsten filament and the red tip exhibits certain patterns during ignition: when the ignition voltage is output, the resistance of the tungsten filament only increases gradually with the change in tungsten filament temperature, and the ignition current decreases gradually with ignition time; however, when the red tip is output, the propellant in the red tip will ignite and explode after the heating resistor heats up, destroying the heating resistor on the red tip, causing the resistance to increase instantaneously with a significant abrupt change, and the ignition current drops sharply as the red tip explodes.

[0004] Existing technologies include ignition devices that use electric ignition for fireworks set off by individuals, such as a simple ignition device with single remote control ignition. This simple ignition device includes a button remote control part and a power supply part. The power supply part has multiple power supplies, each of which is responsible for providing voltage to one ignition channel. The power supply does not distinguish between ignition head types and only provides a certain voltage. The duration of the output voltage is controlled by manually pressing the button.

[0005] Existing igniters have the following disadvantages:

[0006] (1) It cannot automatically distinguish the type of the connected ignition head and relies entirely on human judgment. However, consumers may not know the type of the fireworks ignition head. If the ignition type is judged incorrectly, it may cause unnecessary voltage output or ignition failure.

[0007] (2) The type of output ignition voltage cannot be selected. The output voltage duration is controlled manually, which cannot accurately time the voltage. This can easily cause the pressing time to be too long or too short, resulting in unnecessary voltage output or ignition failure.

[0008] (3) It does not have the function of detecting the ignition head connection. When ignition fails, it cannot be ruled out that the ignition head itself is faulty or the ignition head connection is faulty.

[0009] (4) It does not have the timer function of freely setting the delayed ignition time of consumer fireworks, nor does it have the function of arranging consumer fireworks; for fireworks with multiple ignition channels, it requires careful operation by human hands, which is difficult to operate and can easily lead to poor display effect and make it difficult to achieve combined display effect.

[0010] (5) When multiple ignition channels need to be ignited, especially when there are many ignition channels, more power supplies need to be set up, which is costly and inconvenient to operate.

[0011] With the increasing diversity of fireworks designs, existing ignition devices can no longer meet market demands. Therefore, it is necessary to develop automated and intelligent ignition devices. Utility Model Content

[0012] To address the above problems, one objective of this utility model is to provide an intelligent ignition circuit. The technical solution is as follows:

[0013] An intelligent ignition circuit includes a power supply, a switching switch, a current detector, a microcontroller, and an ignition control circuit;

[0014] The power source provides electrical energy to the ignition control circuit;

[0015] The ignition control circuit includes a tungsten filament ignition control circuit and a small red-tip ignition control circuit. The tungsten filament ignition control circuit is used to output the tungsten filament ignition working voltage, and the small red-tip ignition control circuit is used to output the small red-tip ignition working voltage.

[0016] The switching switch is used to switch between the tungsten filament ignition control circuit and the red-tipped ignition control circuit, and sends the switching signal of the switching switch to the microcontroller.

[0017] The current detector collects the current signal in the ignition control circuit and sends the current signal to the microcontroller;

[0018] The microcontroller receives the current signal and the switching signal, and transmits the control signal to the ignition control circuit.

[0019] Preferably, the tungsten filament ignition control circuit includes a first delay switch, and the red-tipped ignition control circuit includes a second delay switch; the common terminal of the switching switch is connected to a power supply, one movable terminal of the switching switch is connected to one end of the first delay switch, and the other movable terminal of the switching switch is connected to one end of the second delay switch; the other ends of the first delay switch and the other ends of the second delay switch are connected together as an output port for outputting the ignition working voltage; the control terminals of the first delay switch and the second delay switch are respectively connected to a microcontroller.

[0020] Preferably, the common terminal of the switching switch is connected to the positive terminal of the power supply, and the two movable terminals are respectively connected to the input ports of the microcontroller; the tungsten filament ignition control circuit and the red-tipped ignition control circuit are respectively connected to the on / off delay signal of the microcontroller.

[0021] Preferably, the ignition circuit further includes a pre-switch, which is connected in series with a power supply; further, the power supply is a charging power supply; further, the ignition circuit further includes an indicator circuit that connects a current-limiting resistor and an indicator light in series, the input terminal of the indicator circuit being connected to the power supply, and the output terminal being connected to the output terminal of the ignition control circuit.

[0022] Preferably, the ignition control circuit has multiple paths, each including a tungsten filament ignition control circuit and a red-tipped ignition control circuit; the multiple ignition control circuits are connected in parallel; further, the multiple ignition control circuits share a power supply; further, the multiple ignition control circuits share a current detector; further, the ignition circuit includes multiple indicator circuits, each indicator circuit including a current-limiting resistor and an indicator light connected in series; the input terminal of the indicator circuit is connected to the power supply, and the multiple output terminals of the multiple indicator circuits are respectively connected to the multiple output terminals of the multiple ignition control circuits one-to-one.

[0023] Preferably, the circuit further includes a digital tube, a digital tube driver module, and a key input module; the key input module is connected to a microcontroller, and the microcontroller is connected to the digital tube through the digital tube driver module.

[0024] Preferably, the key input module includes a first key for selecting the ignition channel, a second key for setting the ignition delay time, and a third key for setting the ignition delay time precision; the digital tube includes a first digital tube for displaying the current ignition channel, a second digital tube for displaying the ignition delay time, and a third digital tube for displaying the ignition delay time precision.

[0025] Another objective of this utility model is to provide an ignition box, which includes the aforementioned intelligent ignition circuit and a box body. The circuit further includes a digital tube, a digital tube driver module, and a key input module. The key input module is connected to a microcontroller, and the microcontroller is connected to the digital tube through the digital tube driver module. The power supply, current detector, microcontroller, and digital drive module are located inside the box body. The keys, digital tube, switch, and power switch of the key input module are located on the outer shell of the box body.

[0026] Preferably, the ignition box is provided with a TYPE-C interface, which includes a first TYPE-C interface and / or a second TYPE-C interface; the first TYPE-C interface is connected to the microcontroller; and the second TYPE-C interface is connected to the charging circuit of the power supply.

[0027] Another objective of this invention is to provide a fireworks display device, comprising the aforementioned ignition box and fireworks; the ignition head of the fireworks is a tungsten filament or a small red tip; the ignition box and the ignition head of the fireworks are connected by a quick-connect plug.

[0028] Compared with the prior art, one or more of the above technical solutions can achieve at least one of the following beneficial effects:

[0029] (1) The ignition circuit can automatically distinguish the type of ignition head connected, and is compatible with tungsten filament and red ignition heads;

[0030] (2) Signal feedback can automatically identify whether there is an ignition type misoperation, thus avoiding unnecessary voltage output or ignition failure.

[0031] (3) It can realize tungsten filament ignition or small red head ignition of multiple ignition channels, and the circuit structure is simple;

[0032] (4) It has an ignition head connection indication function. When ignition failure occurs, it can be clearly ruled out that the ignition head itself is faulty or the ignition head connection is faulty.

[0033] (5) Supports setting arbitrary special effect delay time for multiple ignition channels and delay output of ignition head for multiple ignition channels, so as to realize the arrangement effect of consumer-grade fireworks combination display;

[0034] (6) The delay can be arranged by using digital tubes, buttons or TYPE-C port, which has the advantages of intuitive display, accuracy and convenient operation;

[0035] (7) The ignition box has a small structure, is safe and convenient, easy to transport, and has a low cost. Attached Figure Description

[0036] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a graph showing the trend of ignition current variation for tungsten filament and red tip.

[0038] Figure 2 This is a schematic block diagram of the intelligent ignition circuit of this application.

[0039] Figure 3 This is a schematic diagram of the intelligent ignition circuit in Example 1.

[0040] Figure 4 This is a schematic diagram of the intelligent ignition circuit in Example 2.

[0041] Figure 5 This is a schematic diagram of the intelligent ignition circuit in Example 3.

[0042] Figure 6 This is a schematic diagram of the intelligent ignition circuit in Example 4.

[0043] Figure 7 This is a partial schematic diagram of the intelligent ignition circuit in Example 5.

[0044] Figure 8 This is a schematic diagram of the ignition box in Example 6. Detailed Implementation

[0045] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0046] like Figure 2 As shown, this application provides an intelligent ignition circuit, including a power supply, a switching switch, a current detector, a microcontroller, and an ignition control circuit.

[0047] The power supply provides electrical energy to the ignition control circuit. The ignition control circuit includes a tungsten filament ignition control circuit and a red-tipped ignition control circuit, used to output the tungsten filament ignition working voltage and the red-tipped ignition working voltage, respectively. A switch is located between the power supply and the ignition control circuit, switching between the two circuits and sending the switching signal to the microcontroller. A current detector collects the current signal in the ignition control circuit and sends it to the microcontroller. The microcontroller receives the current signal and the switching signal, and transmits a control signal to the ignition control circuit to control the interruption or continuity of the ignition control circuit's output voltage. In this design, the ignition control circuit can selectively output the tungsten filament ignition working voltage and the red-tipped ignition working voltage via the switch. By combining the current signal collected by the current detector with the signal from the switch, misoperation is prevented, achieving the purpose of automatically controlling the output of the corresponding ignition voltage.

[0048] Specifically, the working principle of this solution is as follows:

[0049] After selecting between the tungsten filament ignition control circuit and the red-tipped ignition control circuit using a switch, power is supplied to either the tungsten filament ignition control circuit or the red-tipped ignition control circuit. Once either circuit is activated, a current detector monitors the current in the ignition control circuit. According to... Figure 1 The ignition characteristics of the tungsten filament and the red-tipped ignition coil shown can be used to determine the type of ignition coil currently connected by detecting sudden changes in current. The switch signal reflects the type selected by the user. By comparing the ignition types indicated by the two signals, it can be determined whether an incorrect ignition coil type has been selected. If an incorrect type is selected, the microcontroller controls the current ignition control circuit to interrupt or continue ignition. For example, if a sudden change in current is detected, and the switch signal indicates that the ignition coil is tungsten, it means that the actual ignition coil connected is the red-tipped ignition coil, and the tungsten filament ignition control circuit has been selected. The current ignition is then interrupted to avoid unnecessary ignition time. If no sudden change in current is detected, and the switch signal indicates that the ignition coil is the red-tipped ignition coil, it means that the actual ignition coil connected is tungsten, and the red-tipped ignition control circuit has been selected. The current ignition is then delayed to ensure sufficient ignition time.

[0050] In one implementation, the ignition circuit also includes a backup switch, which is connected in series with the power supply. If the user discovers that the wrong ignition type has been selected, they can manually interrupt the ignition.

[0051] When making specific selections, a conventional microcontroller can be chosen, the current detector can be selected based on the current accuracy, a two-position switch can be selected, and a rechargeable power supply can be selected.

[0052] The following describes the specific implementation method in detail.

[0053] Example 1

[0054] like Figure 3 As shown, in the ignition circuit of this embodiment, the tungsten filament ignition control circuit includes a first delay switch, and the red-tipped ignition control circuit includes a second delay switch. The common terminal of the switch is connected to the power supply, one movable terminal of the switch is connected to one end of the first delay switch, and the other movable terminal of the switch is connected to one end of the second delay switch. The other ends of the first and second delay switches are interconnected, serving as output ports for the ignition operating voltage. The control terminals of the first and second delay switches are respectively connected to a microcontroller for control. Other components and connections of the ignition circuit can be found in the preceding description.

[0055] Based on the ignition requirements of the tungsten filament, the first delay switch can be set to a long delay. When the switch is switched to the tungsten filament ignition control circuit, the power supply is connected to the first delay switch. When the first delay switch is closed, the output port outputs the long-term ignition voltage, i.e., the tungsten filament ignition operating voltage. Based on the ignition requirements of the red-tipped ignition coil, the second delay switch can be set to a short delay. When the switch is switched to the red-tipped ignition control circuit, the power supply is connected to the second delay switch. When the second delay switch is closed, the output port outputs the short-term ignition voltage, i.e., the red-tipped ignition operating voltage.

[0056] Once the microcontroller receives the feedback current signal and switching signal, it can control the on / off state and delay of the voltage output by controlling the first and second delay switches. For example, if the switch selects the red-tipped ignition control circuit, but no sudden change is detected in the current during ignition, the second delay switch can be restarted multiple times to ensure normal tungsten filament ignition.

[0057] In practical implementation, the times of the first and second delay switches can be preset according to the ignition characteristics of the tungsten filament and the red-tipped ignition tip. The first and second delay switches can be selected according to the specific delay accuracy, for example, an NE555 can be used.

[0058] Example 2

[0059] The difference between this embodiment and embodiment 1 is that in the ignition circuit of this embodiment, the ignition control circuit outputs a long-term ignition voltage and a short-term ignition voltage, and a time delay switch hardware is not required.

[0060] like Figure 4 As shown, in the intelligent ignition circuit of this embodiment, the common terminal of the switch is connected to the positive terminal of the power supply (not shown in the figure), and the two active terminals are respectively connected to the input ports of the microcontroller to transmit the switching signal to the microcontroller; the ignition control circuit is connected to the on / off delay signal of the microcontroller; the connections of other components can be found in the previous description.

[0061] In practical implementation, based on the ignition characteristics of the tungsten filament and the small red tip, the tungsten filament ignition control circuit is connected to the long-delay signal of the microcontroller, outputting a long-duration voltage, for example, a delay of 3 seconds; the small red tip ignition control circuit is connected to the short-delay signal of the microcontroller, outputting a short-duration voltage, for example, a delay of 20 milliseconds. This embodiment automatically adjusts the ignition duration of the ignition head via a switching switch: when the switch is switched to the tungsten filament ignition control circuit, the output ignition voltage is output according to a 3-second plan; when the switch is switched to the small red tip control circuit, the output ignition voltage is output according to a 20-millisecond plan. When the microcontroller receives the feedback current signal and the switching signal, the currently operating ignition control circuit can interrupt or delay the output voltage by connecting to the microcontroller's interrupt and delay signals.

[0062] In this embodiment, the controller's current acquisition and analysis are conventional technologies, and the functions of outputting on / off and delay signals are common functions of microcontrollers and are conventional technologies in this field. They are not the focus of this application and will not be elaborated here.

[0063] This embodiment has fewer components, precise timing, and lower cost.

[0064] Example 3

[0065] The difference between this embodiment and Embodiments 1 and 2 is that the ignition circuit in this embodiment has multiple ignition control circuits, each of which includes a tungsten filament ignition control circuit and a small red-tipped ignition control circuit; the multiple ignition control circuits are connected in parallel.

[0066] The following is a detailed explanation of setting up a multi-channel ignition control circuit based on the ignition circuit of Embodiment 2.

[0067] like Figure 5 As shown, the ignition control circuit has 12 channels, each including a tungsten filament ignition control circuit and a small red-head ignition control circuit. The 12 tungsten filament ignition control circuits are connected to a long-delay signal from the microcontroller, with the same delay duration; the 12 small red-head ignition control circuits are connected to a short-delay signal from the microcontroller, with the same delay duration. When the switch is selected to select the tungsten filament control circuit (i.e., the switch is closed to the left in the diagram), the delay time in all 12 ignition control circuits is a long delay, and the output voltage is the long-duration operating voltage, i.e., the tungsten filament ignition operating voltage. When the switch is selected to select the small red-head control circuit (i.e., the switch is closed to the right in the diagram), the delay time in all 12 ignition control circuits is a short delay, and the output voltage is the short-duration operating voltage, i.e., the small red-head ignition operating voltage.

[0068] In a preferred embodiment, multiple ignition control circuits share a common power supply and a common current detector.

[0069] This embodiment is not only compatible with tungsten filament and red-tipped ignition, but also enables ignition through multiple ignition channels, providing a foundation for the automatic ignition and display of fireworks in combination.

[0070] Although this embodiment uses the ignition circuit in Embodiment 2 as a basis for setting up a multi-channel ignition control circuit, it is understood that, similarly, it is also possible to set up a multi-channel ignition control circuit based on the ignition circuit in Embodiment 1, which will not be elaborated here.

[0071] Example 4

[0072] The intelligent ignition circuit provided in this embodiment differs from those in Embodiments 1, 2, and 3 in that it further includes an indicator circuit. The indicator circuit includes a current-limiting resistor and an indicator light connected in series. The input terminal of the indicator circuit is connected to a power supply, and the output terminal of the indicator circuit is connected to the output terminal of the ignition control circuit.

[0073] The following detailed explanation uses the ignition circuit of Example 2 as an example to illustrate the addition of an indicator circuit. Figure 6 As shown, one end of the current-limiting resistor serves as the input terminal of the indicator circuit, connected to the power supply via a current detector. The other end of the current-limiting resistor is connected to one end of an indicator light, and the other end of the indicator light serves as the output terminal of the indicator circuit, connected to the output terminal of the ignition control circuit. When a tungsten filament or a small red ignition coil is connected to the output terminal of the ignition control circuit, the indicator circuit conducts. Due to the large current-limiting resistor, the voltage at the output terminal is small, insufficient to ignite the ignition head, and the indicator light illuminates. The indicator circuit automatically detects whether the ignition head is properly connected after the small red ignition coil or tungsten filament is connected.

[0074] In some implementations, when there are multiple ignition control circuits, there are also multiple indicator circuits, each used to indicate the connection of the ignition head at the output terminal of each ignition control circuit. For example, based on the ignition circuit of Embodiment 3, multiple indicator circuits are configured; the input terminal of each indicator circuit is connected to a power supply, and the multiple output terminals of the multiple indicator circuits are respectively connected to the multiple output terminals of the multiple ignition control circuits. When the ignition circuit is connected to multiple ignition channels, the ignition head of each ignition channel can be indicated by the indicator light of the corresponding indicator circuit to determine whether the connection is intact.

[0075] Example 5

[0076] like Figure 7 As shown, the intelligent ignition circuit of this embodiment differs from that of embodiment 4 in that the ignition circuit further includes a digital tube, a digital tube driver module, and a key input module; the key input module is connected to the microcontroller, and the microcontroller is connected to the digital tube through the digital tube driver module.

[0077] The system allows users to select ignition channels and set special effect delay times via a keypad input module, with the settings displayed on corresponding digital displays. The microcontroller outputs control signals to each ignition control loop according to the set special effect delay time. The start time of the delay for each ignition control loop is determined by the microcontroller's output delay time, achieving the desired effect. Taking a twelve-channel ignition system as an example, it corresponds to twelve ignition control loops. The sequence of start times for these loops can be set via keys, thus controlling the ignition sequence of the connected ignition channels.

[0078] In a preferred embodiment, the button input module includes a first button for selecting the ignition channel, a second button for setting the ignition delay time, and a third button for setting the ignition delay time precision. The digital display includes a first digital display for displaying the current ignition channel, a second digital display for displaying the ignition delay time, and a third digital display for displaying the ignition delay time precision. The third digital display shows the precision setting level, for example, displaying 1 or 2; at level 1, the precision is 1 second, and the channel effect delay setting range is 0-999 seconds; at level 2, the precision is 0.1 seconds, and the channel effect delay setting range is 0-99.9 seconds.

[0079] In one implementation, the first button can be two buttons, the second button can be three buttons, and the third button can be one button. Correspondingly, the first, second, and third digital tubes can each be one two-digit, one three-digit, and one one-digit display, respectively, used for displaying the ignition channel, the special effect delay time, and the special effect delay time precision level. In practice, the digital tubes, the digital tube driver module, and the button input module can all use commercially available conventional components. The methods for the microcontroller to acquire button inputs, drive the digital tube driver module, and display output can all use conventional methods, which will not be elaborated here.

[0080] In some implementations, a TYPE-C interface can also be provided, through which the microcontroller can be connected to a computer to set the ignition channel and special effect delay time.

[0081] In this embodiment, when the switch is switched to the tungsten filament ignition control circuit, if a sudden change in ignition current is detected, it can be determined that the ignition control circuit is connected to the small red ignition head and has been ignited. If the delay time of the next ignition head has expired at this time, the current ignition control circuit will be interrupted and switched to the next ignition control circuit to avoid unnecessary delay and ensure the ignition effect. When switched to the small red ignition control circuit, if no sudden change in ignition current is detected, it can be determined that the ignition control circuit is connected to the tungsten filament. If the delay time of the next ignition head has not expired at this time, the current ignition control circuit will continue until the parameter changes or the ignition time reaches 3 seconds (long delay), thus ensuring that the tungsten filament ignition control circuit can ignite correctly.

[0082] This embodiment can realize multi-channel ignition head delay output, achieve the effect of timing combination of multiple fireworks, and is safe, convenient, low cost, high delay accuracy. It also has the advantages of being intuitive, accurate and easy to operate.

[0083] Example 6

[0084] Based on the same inventive concept, this embodiment provides an ignition box, including the ignition circuit and box body as described in Embodiment 5. The buttons, digital display, toggle switch, pre-set switch, power switch, and indicator lights of the button input module are mounted on the outer shell of the box body, while the remaining components can be housed inside the box body.

[0085] This embodiment uses an ignition box with 12 ignition channel testing functions as an example. Its ignition circuit can be found in [reference needed]. Figure 6 , Figure 7 .

[0086] As a specific implementation method, such as Figure 8 As shown, the 12 indicator lights 2 are indicator lights for the 12 ignition control circuits. Each ignition control circuit outputs the ignition working voltage through the output port, which is set as the ignition head interface 1. In this embodiment, there are ignition head interfaces from the first to the twelfth ignition head interface. The indicator lights 2 and the corresponding ignition head interface 1 are arranged together. The indicator lights 2 and the ignition head interface 1 are set on both sides of the outer panel, and the 12 indicator lights 2 and the ignition head interface 1 are arranged in two columns. The ignition head interface 1 is set on the outside to facilitate the connection of the ignition head. The switch 4 is a two-position DIP switch, and the pre-set switch 11 has a pre-set indicator light 10. The switch 4, the pre-set switch 11, and the pre-set indicator light 10 are set on the upper part of the outer panel. The digital tube and the buttons of the key input module are set on the lower part of the outer panel.

[0087] In some embodiments, the ignition box casing also features a first Type-C interface for connecting to a microcontroller, facilitating connection to an external computer for modifying and setting channel selection, time, etc. In some embodiments, when the power source is a rechargeable power supply, a second Type-C interface 12 connected to the charging circuit of the rechargeable power supply is also provided at the bottom of the ignition box casing for convenient charging. A power indicator light 13 is also provided at the bottom of the ignition box casing to indicate the power supply's operating status.

[0088] In some implementations, an ignition button 5 is provided on the outer shell of the ignition box. The ignition button 5 is connected to a microcontroller, which receives the ignition signal and starts ignition control.

[0089] The operation process of the ignition box is as follows: Set the effect delay for each ignition channel in advance using the first button 7, the second button 8, the first digital tube 6, and the second digital tube 9; ensure the ignition box has sufficient power; ensure the ignition box power is off and the pre-set switch 11 is turned OFF; ensure the ignition head connection wire is protected; connect the tungsten filament or small red tip to the ignition head interface 1. When the fireworks to be ignited have multiple ignition channels, connect them to the first ignition head interface according to the fireworks delay sequence. For example, connect the ignition head of the first ignition channel to the first ignition head interface. Connect the ignition head of the second ignition channel to the second ignition head interface, and so on; turn on the power switch 3 and confirm that the indicator light 2 corresponding to the connected ignition head is lit; confirm that the setting off site meets the safety requirements and that the spectators move away from the fireworks to a safe area; turn the preparatory switch 11 to the ON position and the preparatory indicator light 10 is lit normally; start ignition, the digital tube starts timing, and ignite the fireworks at the corresponding channel address according to the set delay time; if you want to interrupt ignition, turn the preparatory switch 11 to the OFF position or turn off the power supply 3 of the ignition box to stop ignition.

[0090] The ignition box in this embodiment can be directly controlled by buttons and switches on the panel, making it convenient and safe to operate. It also features an intuitive display, small size, and easy transportation and storage.

[0091] Example 7

[0092] Based on the same inventive concept, this embodiment provides a fireworks display device, including the ignition box and fireworks as described in Embodiment 6. The ignition head of the fireworks is a tungsten filament or a small red tip; the ignition box provides the ignition voltage to the tungsten filament or small red tip. In a preferred embodiment, the ignition box is connected to the tungsten filament or small red tip via a quick-connect connector.

[0093] Obviously, the above embodiments are merely examples to clearly illustrate the technical solution of this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An intelligent ignition circuit, characterized by, The ignition circuit comprises a power supply, a switch, a current detector, a microcontroller, an ignition control circuit; The power supply provides power for the ignition control circuit; The ignition control circuit comprises a tungsten wire ignition control circuit and a small red head ignition control circuit, the tungsten wire ignition control circuit is used for outputting a tungsten wire ignition working voltage, and the small red head ignition control circuit is used for outputting a small red head ignition working voltage; The switch is used for switching the tungsten wire ignition control circuit and the small red head ignition control circuit and sending a switching signal of the switch to the microcontroller; The current detector collects a current signal in the ignition control circuit and sends the current signal to the microcontroller; The microcontroller receives the current signal and the switching signal and transmits a control signal to the ignition control circuit.

2. The intelligent ignition circuit of claim 1, wherein, The tungsten wire ignition control circuit comprises a first delay switch, and the small red head ignition control circuit comprises a second delay switch; a common end of the switch is connected to the power supply, one active end of the switch is connected to one end of the first delay switch, and the other active end of the switch is connected to one end of the second delay switch; the other end of the first delay switch and the other end of the second delay switch are connected, serving as an output end for outputting the ignition working voltage; and the control end of the first delay switch and the control end of the second delay switch are connected to the microcontroller respectively.

3. The intelligent ignition circuit of claim 1, wherein, The common end of the switch is connected to the positive pole of the power supply, and the two active ends are connected to the input end of the microcontroller respectively; and the tungsten wire ignition control circuit and the small red head ignition control circuit are connected to the on-off delay signal of the microcontroller respectively.

4. The intelligent ignition circuit of claim 1, wherein, The ignition circuit further comprises a standby switch connected in series with the power supply; further, the power supply is a charging power supply; further, the ignition circuit further comprises an indication circuit connected in series with a current-limiting resistor and an indicator light, an input end of the indication circuit is connected to the power supply, and an output end of the indication circuit is connected to the output end of the ignition control circuit.

5. The intelligent ignition circuit of claim 1, wherein, The ignition control circuit is provided with multiple paths, each path of the ignition control circuit comprises a tungsten wire ignition control circuit and a small red head ignition control circuit; the multiple paths of the ignition control circuit are connected in parallel; further, the multiple paths of the ignition control circuit share the power supply; further, the multiple paths of the ignition control circuit share the current detector; further, the ignition circuit comprises multiple indication circuits, each indication circuit comprises a current-limiting resistor and an indicator light connected in series with each other; an input end of each indication circuit is connected to the power supply, and multiple output ends of the multiple indication circuits are connected to multiple output ends of the multiple paths of the ignition control circuit one by one.

6. The smart ignition circuit of any one of claims 1 to 5, wherein, The circuit further comprises a number tube, a number tube driving module and a key input module; the key input module is connected to the microcontroller, and the microcontroller is connected to the number tube through the number tube driving module.

7. The smart ignition circuit of claim 6, wherein, The key input module comprises a first key for selecting an ignition channel, a second key for setting an ignition delay time and a third key for setting an ignition delay time precision; the number tube comprises a first number tube for displaying a current ignition channel, a second number tube for displaying the ignition delay time and a third number tube for displaying the ignition delay time precision.

8. A firing box characterized by, The intelligent ignition circuit according to any one of claims 1 to 7 and the box body, the circuit further comprises a digital tube, a digital tube driving module and a key input module; the key input module is connected with a microcontroller, the microcontroller is connected with the digital tube through the digital tube driving module; the power supply, the current detector, the microcontroller and the digital driving module are arranged in the interior of the box body; the keys of the key input module, the digital tube, the switch and the switch of the power supply are arranged on the shell of the box body.

9. The ignition cartridge of claim 8 wherein, The ignition box is provided with a TYPE-C interface, the TYPE-C interface comprises a first TYPE-C interface and / or a second TYPE-C interface; the microcontroller is connected in the first TYPE-C interface; the charging loop of the power supply is connected in the second TYPE-C interface.

10. A firework device, characterized by The ignition box according to claim 8 or 9 and the firework, the ignition head of the firework is a tungsten wire or a small red head; the ignition box and the ignition head of the firework are connected through a quick plug.

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