CN111780623A - Fireworks ignition device - Google Patents
Fireworks ignition device Download PDFInfo
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- CN111780623A CN111780623A CN202010476711.1A CN202010476711A CN111780623A CN 111780623 A CN111780623 A CN 111780623A CN 202010476711 A CN202010476711 A CN 202010476711A CN 111780623 A CN111780623 A CN 111780623A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B4/00—Fireworks, i.e. pyrotechnic devices for amusement, display, illumination or signal purposes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
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- Fire Alarms (AREA)
Abstract
The application relates to a firework ignition device. Comprises a control unit, a relay signal forwarding unit, a terminal interface unit and an ignition head unit, wherein the control unit sends an ignition instruction to the relay signal forwarding unit only when detecting that the address of the relay signal forwarding unit is in a preset address list, therefore, the control device can distinguish whether the relay forwarding unit is the relay signal forwarding unit to be controlled, avoid false start, and the terminal interface unit can enable the igniter head unit to be electrified to ignite the fireworks only when detecting that the address information corresponding to the ignition instruction meets the preset matching condition, namely, the terminal interface unit can only receive the control of the relay signal forwarding unit of which the address information meets the preset matching condition, and through the double verification of the relay signal forwarding unit and the terminal interface unit, the firework igniter can effectively avoid the phenomenon that the device is touched by mistake to cause firework error points, and the safety performance of the firework igniter is improved.
Description
Technical Field
The application relates to the technical field of fireworks, in particular to a firework ignition device.
Background
Fireworks and crackers are widely applied to entertainment, celebration activities and the like, and the traditional fireworks are set off by igniting fireworks leads after a user approaches the fireworks, but safety accidents are easy to happen. It is very important to ensure the personal safety in the setting off process and avoid accidents.
To avoid the user from setting off fireworks at close distances, ignition devices are used. The ignition device comprises a wired ignition device and a wireless ignition device, and the wireless ignition device is not required to be wired before ignition, is not influenced by the length of a wire rod and is convenient to carry, so that the wireless ignition device is widely applied. The traditional wireless ignition device mostly adopts a remote controller to control an ignition terminal switch to be turned on, the ignition terminal is connected with a battery power supply to electrify a conventional small red head, and a lead is ignited after the conventional small red head is ignited. However, the mode is simple to control, when the ignition terminal is touched by mistake, such as when the ignition terminal is touched by mistake, the ignition terminal can also electrify the small red head, personal safety is easily endangered, and the safety factor is low.
Disclosure of Invention
Based on this, it is necessary to provide a firework ignition device aiming at the problem that the traditional ignition device has low safety factor.
A firework ignition device comprises a control unit, a relay signal forwarding unit, a terminal interface unit and an ignition head unit, wherein the control unit is connected with the relay signal forwarding unit, the relay signal forwarding unit is connected with the terminal interface unit, and the terminal interface unit is connected with the ignition head unit;
the control unit sends an ignition instruction to the relay signal forwarding unit when detecting that the address of the relay signal forwarding unit is in a preset address list, the relay signal forwarding unit forwards the ignition instruction to the terminal interface unit, and the terminal interface unit is used for switching on a power supply of the ignition head unit when detecting that address information corresponding to the ignition instruction meets a preset matching condition, so that the ignition head unit ignites fireworks.
The firework ignition device comprises a control unit, a relay signal forwarding unit, a terminal interface unit and an ignition head unit, wherein the control unit is connected with the relay signal forwarding unit, the relay signal forwarding unit is connected with the terminal interface unit, the terminal interface unit is connected with the ignition head unit, the control unit sends an ignition instruction to the relay signal forwarding unit when detecting that the address of the relay signal forwarding unit is in a preset address list, the relay signal forwarding unit forwards the ignition instruction to the terminal interface unit, and the terminal interface unit is used for switching on a power supply of the ignition head unit when detecting that the address information corresponding to the ignition instruction meets preset matching conditions, so that the ignition head unit ignites fireworks. The control unit can send the ignition instruction to the relay signal forwarding unit only when detecting that the address of the relay signal forwarding unit is in the preset address list, so that the control device can distinguish whether the relay signal forwarding unit is the relay signal forwarding unit to be controlled or not, and avoid false start, and the terminal interface unit can enable the igniter head unit to be electrified to ignite fireworks only when detecting that the address information corresponding to the ignition instruction meets the preset matching condition, namely the terminal interface unit can only receive the control of the relay signal forwarding unit of which the address information meets the preset matching condition, and can effectively avoid error contact of devices to cause error contact of fireworks through double verification of the relay signal forwarding unit and the terminal interface unit, and the safety performance of the firework ignition device is improved.
In one embodiment, the firing head unit includes at least one of a heating wire firing head, an arc firing head, and a red firing head.
In one embodiment, when the firing head unit includes a heating wire firing head, the heating wire firing head includes a sealed heating wire firing head and/or a hollowed heating wire firing head.
In one embodiment, the terminal interface unit and the firing head unit are pluggable.
In one embodiment, the terminal interface unit includes a sampling circuit and a controller, the sampling circuit and the controller are both connected to the firing head unit, the sampling circuit is connected to the controller, and the controller is connected to the relay signal forwarding unit;
the sampling circuit is used for collecting the electric parameters of the ignition head unit and sending the electric parameters to the controller, and the controller is used for identifying the type of the ignition head according to the electric parameters and sending an electrifying signal corresponding to the type of the ignition head to the ignition head unit when detecting that the address information corresponding to the ignition instruction meets the preset matching condition.
In one embodiment, the controller is further configured to send a self-test error message to the signal repeating unit when the electrical parameter is detected to exceed a safety threshold range.
In one embodiment, the terminal interface unit further includes a power switch, a load switch and a power supply, the controller is connected to the ignition head unit through the load switch, the controller is connected to the power switch, the power switch is connected to the power supply, and the power supply is connected to the ignition head unit;
the controller is used for adjusting the duty ratio of a signal output to the power switch according to the detected working state of the load switch.
In one embodiment, the controller is further configured to adjust a duty cycle of a signal output to the power switch based on the received ignition command information.
In one embodiment, the terminal interface unit and the relay signal forwarding unit have the same external dimensions and are both covered by a flame-retardant casing.
In one embodiment, the control unit is connected with the relay signal forwarding unit through bluetooth, the relay signal forwarding unit is connected with the terminal interface unit through a local area network, and the terminal interface unit is connected with the ignition head unit through a wire.
Drawings
FIG. 1 is a block diagram of a firework ignition device in one embodiment;
FIG. 2 is a block diagram of a firework ignition device in another embodiment;
FIG. 3 is a schematic diagram of the structure of a firework ignition device in one embodiment;
FIG. 4 is a schematic diagram of the structure and dimensions of an exemplary arc ignition head;
FIG. 5 is a front view of an arc ignition head structure according to one embodiment;
FIG. 6 is a side view of an arc ignition head structure according to one embodiment;
FIG. 7 is a front view of a sealed heating wire firing head structure according to one embodiment;
FIG. 8 is a side view of an embodiment of a sealed heating wire firing head structure;
FIG. 9 is a front view of a hollowed out heating wire firing tip structure in one embodiment;
FIG. 10 is a side view of a hollowed out heater wire igniter head structure according to one embodiment;
FIG. 11 is a schematic diagram showing the structure and size of a sealed heating wire firing head according to an embodiment;
FIG. 12 is a schematic diagram of the structure and size of a hollow heating wire firing head in one embodiment;
FIG. 13 is a diagram illustrating the structure and size of a relay signal forwarding unit according to an embodiment;
FIG. 14 is a diagram illustrating the structure and dimensions of a terminal interface unit according to one embodiment;
FIG. 15 is a front view of a structure of a relay signal forwarding unit in one embodiment;
FIG. 16 is a side view of the structure of a relay signal forwarding unit in one embodiment;
FIG. 17 is a front view of the structure of a terminal interface unit in one embodiment;
FIG. 18 is a side view of the structure of a terminal interface unit in one embodiment;
FIG. 19 is a flow diagram of a self-ignition test of a terminal interface unit in one embodiment;
FIG. 20 is a circuit diagram of a self-ignition test of the termination interface unit in one embodiment;
FIG. 21 is a flowchart illustrating protection against false triggering ignition of the terminal interface unit in accordance with one embodiment;
fig. 22 is a circuit diagram of a false trigger ignition prevention protection circuit of a terminal interface unit in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described more fully below by way of examples in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In one embodiment, please refer to fig. 1 and 3, a firework ignition device is provided, which comprises a control unit 400, a relay signal forwarding unit 300, a terminal interface unit 200 and an ignition head unit 100, wherein the control unit 400 is connected with the relay signal forwarding unit 300, the relay signal forwarding unit 300 is connected with the terminal interface unit 200, and the terminal interface unit 200 is connected with the ignition head unit 100. When detecting that the address of the relay signal forwarding unit 300 is in the preset address list, the control unit 400 sends the ignition instruction to the relay signal forwarding unit 300, the relay signal forwarding unit 300 forwards the ignition instruction to the terminal interface unit 200, and the terminal interface unit 200 is configured to switch on the power supply of the ignition head unit 100 when detecting that the address information corresponding to the ignition instruction meets the preset matching condition, so that the ignition head unit 100 ignites fireworks.
Specifically, the type of the control unit 400 is not unique, and may be a mobile phone or a computer or other terminal equipment with a control function, so as to realize remote control of firework ignition, and the use is convenient. In this embodiment, taking the control unit 400 as the mobile device control unit 400 as an example, the mobile device control unit 400 is installed with an APP control program corresponding to the platform operating system, the user can edit the ignition time information of the music node through the APP control program, and then send an ignition instruction to the relay signal forwarding unit 300, the relay signal forwarding unit 300 transmits the received ignition instruction to the terminal interface unit 200, and the terminal interface unit 200 turns on the power supply of the ignition head unit 100 after receiving the ignition instruction, so that the ignition head unit 100 ignites fireworks.
Referring to fig. 2, the number of the terminal interface units 200 is not unique, when the number of the terminal interface units 200 is more than two, each terminal interface unit 200 may be connected to the same relay signal forwarding unit 300, and the relay signal forwarding unit may implement synchronous or asynchronous signal forwarding on a plurality of terminal interface units 200, so that the working efficiency is high, the addresses of each terminal interface unit 200 are different, which is convenient for distinguishing, and the accuracy of control may also be improved. Alternatively, a plurality of relay signal forwarding units 300 may be used to implement signal forwarding for different terminal structure units, so as to reduce the workload of each relay signal forwarding unit 300. In an extensible manner, the number of the ignition head units 100 is not unique, and each terminal structure unit can be connected with one or more ignition head units 100, so that the number and the layout of the firework ignition device can be adjusted according to the firework setting-off requirement, and the use flexibility of the firework ignition device is improved.
The preset address list is not unique, for example, the address of the relay signal forwarding unit 300 may be set in advance by the control unit 400, and after the control unit 400 sets the address of the relay signal forwarding unit 300, the address may be stored in the database to form the address list, and it is understood that the control unit 400 may set the addresses of a plurality of relay signal forwarding units 300. Alternatively, the preset address list may be set in advance by the user into the control unit 400. Before sending the ignition command to the relay signal forwarding unit 300, the control unit 400 detects the address information of the relay signal forwarding unit 300, and if the address information is in the preset address list, the data is normally transmitted, and the control unit 400 can also display the address information of the relay signal forwarding unit 300, so that the user can confirm the address information, and the ignition command is prevented from being sent to the relay signal forwarding unit 300 or other devices, thereby improving the safety of data transmission.
In addition, the preset matching condition is not unique, for example, the preset matching condition may be an address list of the relay signal forwarding unit 300, the control unit 400 may send the obtained address list of the relay signal forwarding unit 300 to the terminal interface unit 200, after the terminal interface unit 200 receives the ignition instruction, obtain an address of the relay signal forwarding unit 300 that sends the ignition instruction, and if the address is in the preset address list, determine that the preset matching condition is met, thereby turning on the power supply of the ignition head unit 100, so that the ignition head unit 100 ignites fireworks. The preset matching condition may also be an address list of the relay signal forwarding unit 300 having a data transmission record with the terminal interface unit 200, the control unit 400 may set an address of the terminal interface unit 200 through the relay signal forwarding unit 300, so that the relay signal forwarding unit 300 and the terminal interface unit 200 have the data transmission record, the terminal interface unit 200 stores the address of the relay signal forwarding unit 300 having the data transmission record with the terminal interface unit 200, after receiving the ignition instruction, the terminal interface unit 200 acquires address information of the relay signal forwarding unit 300 sending the ignition instruction, and if it is determined that there is a data transmission record before the relay signal forwarding unit 300, it is determined that the preset matching condition is satisfied, so as to control the ignition head unit 100 to ignite fireworks. The terminal interface unit 200 can only receive the control of the relay signal forwarding unit 300 with the address information meeting the preset matching condition, so that the false triggering of the terminal interface unit 200 can be avoided, and the firework setting-off safety is improved. Further, when the control unit 400 is the mobile device control unit 400, the APP installed in the mobile device control unit 400 adopts a pipeline type interactive terminal address design mode to guide the user to gradually set addresses, thereby simplifying the user operation process.
In one embodiment, the firing head unit 100 includes at least one of a heating wire firing head, an arc firing head, and a red firing head. The ignition head unit 100 may be any one of a heating wire ignition head, an arc ignition head and a red ignition head, and may further include a plurality of ignition heads of the same type or different types, and the type and number of the ignition heads may be adjusted according to the firework setting-off requirement, thereby improving the compatibility and expansibility of the ignition terminal interface unit 200.
The connection mode of the firing head unit 100 and the firework lead is not unique, and in this embodiment, please refer to fig. 3, the firing head unit 100 is designed to be fixedly connected with the firework lead in an alligator clip clamping mode, so as to be convenient for adjustment and replacement. According to the type difference of the ignition head unit 100, the mode of igniting the fireworks lead is also different, when the ignition head unit 100 comprises the heating wire ignition head, after the heating wire ignition head is electrified, the heating part of the heating wire clip is rapidly heated up to ignite the fireworks lead to be ignited, and the cost of the heating wire ignition head is low. When the ignition head unit 100 comprises the electric arc ignition head, after the electric arc ignition head is electrified, the ceramic electrode of the electric arc ignition head discharges to the tip to generate high-temperature electric arc to ignite the lead wire to be ignited, and the electric arc ignition head has low power consumption and long service life. When the ignition head unit 100 comprises the red ignition head, the red ignition head ignition lead is ignited after electrification, and the red ignition head is mature in technology and wide in application.
Further, the structure of the arc ignition head is not exclusive, and in the present embodiment, referring to fig. 4, the size of the arc ignition head is 60mm by 22mm by 27mm, referring to fig. 5 and 6, the arc ignition head includes: the semi-metal arc clamp upper cover 1201, the transformer 1202, the PCB 1203, the ignition head 1204, the knurled pin 1205, the semi-metal arc clamp bottom cover 1206, the torsion spring 1207, the metal head 1208, the semi-metal arc clamp cover 1209, the ST2.2 self-tapping screw 1210 and the cable 1211, and the arrangement relationship and the structure diagram of each part can be seen in fig. 5 and 6, which are not described herein again. The crocodile clamping opening is opened by the arc ignition head in a double-cambered-surface wave-shaped lever mode, and the cambered surface is attached to the shape of the thumb of an adult, so that the design of human body comfort is met. Combine torsional spring 1207 and annular knurl round pin 1205 cooperation, can freely control alligator clip mouth opening angle, the fireworks lead wire of the thickness difference of the centre gripping of being convenient for. Torsional spring 1207 adopts manganese steel or stainless steel material, possesses rust-resistant function, and the lead wire clamping part of electric arc ignition head adopts the design of external high temperature resistant metal material, and the high temperature that produces when having avoided the lead wire burning is to clamping part's scaling loss, has also avoided the residue accumulation that produces in the lead wire burning process simultaneously, has prolonged electric arc ignition head's life. The other parts of the electric arc ignition head are opened by plastic, so that the electric arc ignition head is light in weight and convenient to clamp on the lead. The plastic part and the metal clamping part are inserted into the plastic part through the metal piece with barbs, so that the connection stability is ensured. The metal clamping part can be made of aluminum, zinc or stainless steel; the metal clamping part comprises a pair of round holes, so that the ceramic arc electrode can be conveniently led out. The electric arc ignition head adopts a metal and plastic part nesting mode, so that the plastic part is prevented from being burnt when the lead is ignited, and the weight of the ignition head can be reduced. The ignition lead is arranged outside, so that the service life of the ignition head can be prolonged. It is understood that the arc ignition head may have other configurations in other embodiments, as long as those skilled in the art recognize that the same is possible.
In one embodiment, when the firing head unit 100 includes a heating wire firing head, the heating wire firing head includes a sealed heating wire firing head and/or a hollowed heating wire firing head. The type of heating wire point duration and degree of heating is not exclusive, can be for sealed heating wire point duration and degree of heating or fretwork heating wire point duration and degree of heating, can also be simultaneously including sealed heating wire point duration and degree of heating and fretwork heating wire point duration and degree of heating, specifically can select according to actual demand, and it is convenient to use.
The structure of the sealing heating wire firing head is not exclusive, and in this embodiment, referring to fig. 7 and 8, the sealing heating wire firing head includes: the ignition head lower plate 201, the heating wire 202, the ignition head upper plate 203, the ignition lower rubber pad 204, the ignition upper rubber pad 205, the knurled pin 206, the torsion spring 207 and the cable 208 are arranged in a relationship and a structure, and reference may be made to fig. 7 and 8 for the structure and description thereof. The sealed electric heating wire ignition head adopts a heat insulation rubber pad to isolate the electric heating wire and the lead from the plastic machine body of the ignition head, so that the plastic machine body is prevented from being burnt when the lead is burnt.
The structure of the hollowed heating wire ignition head is not unique, and in this embodiment, please refer to fig. 9 and 10, the hollowed heating wire ignition head includes: the ignition head lower plate 101, the heating wire 102, the ignition head upper plate 103, the ignition lower rubber mat 104, the ignition upper rubber mat 105, the knurled pin 106, the torsion spring 107 and the cable 108 are arranged in relation and in structural view, and reference may be made to fig. 9 and 10, which are not described herein again.
The heating wire 102 clamping and fixing part of the hollowed-out heating wire ignition head adopts a hollowed-out design, holes are formed in the upper side, the lower side and the two sides of the heating wire 102, the hollowed-out part is not provided with an isolation rubber pad, high temperature generated during lead combustion is facilitated to dissipate heat in time, meanwhile, residue generated in the lead combustion process is also facilitated to be discharged, and the service life of the ignition head can be prolonged. The outer sizes of the sealed electric heating wire ignition head and the hollowed-out electric heating wire ignition head can be the same, please refer to fig. 11 and 12, the size is 40mm by 18.1mm by 22mm, and the crocodile clip opening is opened by using a cambered surface lever mode, so that the design requirement of human body comfort is met. The hollowed-out electric heating wire ignition head has a hollowed-out overheating prevention function, and the service life of the electric heating wire ignition head can be prolonged. It is understood that in other embodiments, the heating wire firing head may have other configurations, as long as the skilled person realizes.
In one embodiment, the terminal interface unit 200 and the firing head unit 100 are pluggable. The pluggable connection between the terminal interface unit 200 and the ignition head unit 100 facilitates the adjustment of the connection relationship between the terminal structure unit and the ignition head unit 100, and also facilitates the replacement of the terminal interface unit 200 or the ignition head unit 100, so that the use is convenient.
Specifically, the pluggable connection manner is not unique, and in this embodiment, the connection line of the ignition head unit 100 and the terminal interface unit 200 are connected in a pluggable manner through a DC socket, and are directly unplugged when disconnection is required, which is simple to operate. The ignition head unit 100 is powered by the terminal interface unit 200, and when the ignition head unit 100 works in a power-on mode, the connection with the terminal interface unit 200 can be disconnected in a pulling-out mode, so that the ignition head unit 100 can be replaced in a charged mode, and the use is convenient.
In one embodiment, the terminal interface unit 200 includes a sampling circuit and a controller, both of which are connected to the firing head unit 100, and the sampling circuit is connected to the controller, which is connected to the relay signal forwarding unit 300. The sampling circuit is used for collecting the electric parameters of the ignition head unit 100 and sending the electric parameters to the controller, and the controller is used for identifying the type of the ignition head according to the electric parameters and sending an ignition instruction corresponding to the type of the ignition head to the ignition head unit 100 when detecting that the address information corresponding to the ignition instruction meets the preset matching condition.
The type of the ignition head unit 100 is not unique, the sampling circuit can collect the electrical parameters of the ignition head unit 100 connected with the terminal interface unit 200 and send the electrical parameters to the controller, the controller judges the type of the ignition head unit 100 according to the electrical parameters, when detecting that the address information corresponding to the ignition instruction meets the preset matching conditions, the source of the ignition instruction is correct, the ignition instruction corresponding to the ignition head type is sent to the ignition head unit 100, the automatic identification of the ignition head type can be realized, and the corresponding ignition control is carried out according to the ignition head type. Specifically, the type of the electrical parameter is not unique, and may be, for example, a resistance value, and taking the type of the firing head unit 100 as an electric heating wire firing head or an electric arc firing head as an example, the resistance value of the electric heating wire firing head is about 1-2 Ω, and the resistance value of the electric arc firing head may reach tens of Ω or hundreds of K Ω, and the difference is large, so that the type of the firing head may be determined according to the resistance value, thereby implementing corresponding control and improving the accuracy of the control. The controller is connected with the relay signal forwarding unit 300, the ignition head type is transmitted to the control unit 400 through the relay signal forwarding unit 300, when the control unit 400 is the remote control unit 400, or the control unit 400 comprises a display device, the identified ignition head type can be displayed for a user, the user can check the ignition head conveniently, and the set-off fireworks are matched. The terminal interface unit 200 can be compatible with a heating wire ignition head, an electric arc ignition head and a conventional small red head, has the functions of automatically detecting the type of the ignition head, uploading and carrying out corresponding related control functions, and increases the flexibility of control.
In one embodiment, the controller is further configured to send a self-test error message to the signal repeating unit when the electrical parameter is detected to exceed the safety threshold range. When detecting that the electrical parameter of the ignition head unit 100 exceeds the safety threshold range, the self-checking error information is sent to the signal relay forwarding unit, the relay signal forwarding unit 300 can forward the self-checking error information to the control unit 400, and when the control unit 400 is a remote control unit 400 or the control unit 400 includes a display device, the abnormal condition of the ignition head unit 100 can be timely reminded to a user, so that the fault can be timely eliminated, and the use reliability of the firework ignition device is improved.
The terminal interface unit 200 has a function of self-checking the ignition head, when the ignition head unit 100 has abnormal problems such as short circuit, open circuit damage, etc., the electrical parameter detected by the sampling circuit changes and exceeds the range of the safety threshold, when the controller of the terminal interface unit 200 detects that the electrical parameter of the ignition head unit 100 exceeds the range of the safety threshold, the controller sends self-checking error information to the signal relay forwarding unit, and the relay forwarding unit transmits the self-checking error information to the control unit 400 to inform the user of abnormal state information of the ignition head. And in an expandable manner, the controller can lock the fault ignition head channel at the same time, so that the phenomenon of mistaken ignition action caused by the fault of the ignition head is avoided, and the safety of ignition is guaranteed. The terminal interface unit 200 has a self-checking fault function of the ignition head, is high in safety, and can avoid the accident of mistakenly igniting fireworks caused by interference or device faults.
In one embodiment, the terminal interface unit 200 further includes a power switch, a load switch and a power supply, the controller is connected to the torch unit 100 through the load switch, the controller is connected to the power switch, the power switch is connected to the power supply, the power supply is connected to the torch unit 100, and the controller is configured to adjust a duty ratio of a signal output to the power switch according to a detected operating state of the load switch.
Specifically, the terminal interface unit 200 has a PWM (Pulse width modulation) current limiting protection function, the controller detects a working state of the load switch, and when a short circuit of the load switch is detected and the controller does not receive control, the controller reduces a duty ratio of a signal output to the power switch, and is affected by the PWM current limiting, so that a power current received by the ignition head unit 100 is reduced, a firework lead wire cannot be ignited, a mis-ignition action caused by damage of a switch element is avoided, and the safety of setting off is guaranteed.
In one embodiment, the controller is further configured to adjust a duty cycle of a switching signal output to the power supply based on the received ignition command information.
Specifically, the terminal interface unit 200 has a current limiting protection function, and may adjust a duty ratio of a signal output to the power switch according to the received ignition command information. When the ignition head unit 100 does not operate, the controller sets the duty ratio of the signal output to the power switch to be relatively small, thereby reducing the power consumption of the ignition head unit 100. When receiving the ignition command information, the controller first determines whether the received ignition command information meets the requirements, for example, whether the address information of the transmitted information is in a preset address list, and when detecting that the received ignition command information is incorrect, maintains or further reduces the duty ratio of the signal output to the power switch, so that the power supply does not output or outputs less current, and the ignition head unit 100 does not work. Only when the controller receives correct ignition command information, the PWM current-limiting circuit is unlocked and completely opened, and at the moment, the controller increases the duty ratio of a signal output to a power switch so that the power supply continuously outputs current, the ignition head unit 100 works and a firework lead is ignited. Because the power supply part is driven by PWM current-limiting, when receiving wrong ignition command information, the ignition head can not drive the ignition head because of the reduction of the power supply current, thereby avoiding the false ignition action caused by abnormal interference signals and ensuring the safety of ignition. The terminal interface unit 200 has a PWM power control function, which can reduce the standby power consumption of the terminal interface unit 200.
Further, when the ignition head unit 100 includes the electric arc ignition head, the electric arc ignition head can include voltage sampling circuit, power and central controller, voltage sampling circuit and central controller all connect the power, accuse ware in the voltage sampling circuit connection, voltage sampling circuit is used for detecting mains voltage and sends to well accuse ware, well accuse ware is provided with PWM constant current closed loop feedback control, according to the change of battery use in-process voltage, combine the lead wire to ignite the demand to electric arc intensity, self-adaptation adjustment PWM duty cycle, guarantee fireworks all the time and ignite the stability of electric arc intensity, in order to realize the reliability that fireworks ignite.
In one embodiment, the terminal interface unit 200 and the repeating signal repeating unit 300 are identical in size and are each covered by a flame retardant housing. Terminal interface unit 200 and relay signal forward unit 300 overall dimension are unanimous, are convenient for accomodate, all are wrapped up by fire-retardant shell, and the spark falls when can avoiding setting off fireworks, damages terminal interface unit 200 and relay signal forward unit 300, plays the guard action. Further, the external dimensions of the terminal interface unit 200 and the relay signal forwarding unit 300 are not unique, and in this embodiment, please refer to fig. 13 and 14, the dimensions may be 107mm by 95mm by 35mm, and the same packaging box is adopted, so that the terminal interface unit and the relay signal forwarding unit are neatly and easily accommodated. In addition, terminal interface unit 200 and ignition head unit 100 all adopt human emulation streamlined design, and small in size satisfies and holds the comfort, and both ends cambered surface area ripple design is handheld difficult for the landing, has improved the security of using.
Referring to fig. 15 and 16, the relay signal forwarding unit 300 includes a relay upper cover 301, a relay lower cover 302, an antenna column 303, a power switch 304, a nixie tube 305, an indicator 306, an operation button 307, a battery 308, a PCB 309 and a battery cover 310, and the arrangement and structure of the parts may be as shown in fig. 15 and 16, which is not described herein again. Referring to fig. 17 and 18, the terminal interface unit 200 includes a terminal upper cover 401, a terminal lower cover 402, a nixie tube 403, a power switch 404, an antenna post 405, a PCB 406, a battery cover 407, and a battery 408, and the arrangement relationship and the structure diagram of each portion can refer to fig. 17 and 18, which are not described herein again. During normal ignition, the APP is connected with the relay Bluetooth, after program setting is completed, at an APP application program interface, a point down download firing sequence, a point Fire key and a terminal receive command ignition.
The relay box needs to firstly place the LOCK switch at an ON position, the LOCK LED displays red, then the FIRE key is pressed for a long time, the nixie tube display FA sends an ignition command, and the terminal receives the command to ignite.
In one embodiment, the control unit 400 is connected to the relay signal forwarding unit 300 via bluetooth, the relay signal forwarding unit 300 is connected to the terminal interface unit 200 via lan, and the terminal interface unit 200 is connected to the ignition head unit 100 via wire.
By adopting two-stage wireless networking control, the control unit 400 and the relay signal forwarding unit 300 adopt universal Bluetooth communication, so that the method is suitable for most control units 400, especially the mobile device control unit 400, the relay signal forwarding unit 300 and the terminal interface unit 200 adopt an ad hoc local area network mode, the communication distance is long, and the field fireworks can be conveniently placed. Furthermore, the wireless transmission protocol adopts a private protocol designed for fireworks display products, so that the safety of communication information is ensured, and the phenomenon that the ignition action is triggered by mistake due to the mutual interference among different display systems is avoided, so that the display safety is ensured. The battery is usually arranged in the ignition head unit 100, and the ignition head unit 100 and the terminal interface unit 200 are connected in a wired manner, so that the terminal interface unit 200 containing the battery and a firework product to be set off are kept at a certain safe distance, and the safety of the terminal interface unit 200 and the on-site setting off can be further guaranteed.
For a better understanding of the above embodiments, the following detailed description is given in conjunction with a specific embodiment. In one embodiment, the control unit 400 is a mobile device control unit 400, which may be a cell phone, for example. The firework ignition device comprises a mobile device control unit 400, a relay signal forwarding unit 300, a terminal interface unit 200 and an ignition head unit 100, wherein the mobile device control unit 400 is provided with an APP control program corresponding to a platform operating system, and a user can edit the ignition time information of a music node through the APP control program and then send the ignition time information to the relay signal forwarding unit 300. The relay signal forwarding unit 300 transmits the received command of the mobile device control unit 400 to the terminal interface unit 200 of the corresponding address through wireless communication. The terminal interface unit 200 receives the firing command information and controls the power supply of the firing head unit 100 corresponding to the channel interface. The igniter unit 100 is designed to be fixedly connected with a firework lead in a crocodile clip clamping mode, a connecting line of the igniter unit 100 is connected with the terminal interface unit 200 in a pluggable mode through a DC socket, after the igniter unit 100 is electrified, a heating part of the heating wire clip rapidly heats up to ignite the firework lead to be ignited, or an electric arc igniter ceramic electrode discharges to a tip to generate high-temperature electric arc to ignite the lead to be ignited, or a conventional small red igniter lead is ignited.
The number of the terminal interface units 200 and the number of the ignition head units 100 can be multiple, the addresses of the terminal interface units 200 are different, and are convenient to distinguish, the address of each terminal interface unit 200 can be set by the mobile device control unit 400 through the relay signal forwarding unit 300, and the address of the relay signal forwarding unit 300 is set and displayed by the mobile device control unit 400, so that whether the relay signal forwarding unit 300 is to be controlled or not is distinguished, and false start is avoided. The terminal interface unit 200 can only accept control of the relayed signal forwarding unit 300 whose address is set. The firing head unit 100 has a heating wire firing head, an arc firing head, a conventional small red head, and the like. The electric heating wire ignition head comprises a sealed electric heating wire ignition head and a hollow electric heating wire ignition head.
The relay signal forwarding unit 300 and the terminal interface unit 200 have the same external dimensions of 107mm by 95mm by 35mm, are the same as a packaging box, are convenient to store, and adopt a human body simulation streamline design to meet the hand-holding comfort; the cambered surfaces at the two ends are corrugated, so that the hand-held anti-slip shoe is difficult to slip. The shell is made of flame-retardant materials, so that the spark falling damage during the firework setting off is avoided.
The terminal interface unit 200 and the ignition head unit 100 are designed into a DC socket which can be connected in a pluggable manner, so that the ignition head unit 100 can be replaced in an electrified manner, and the low-cost electric heating wire ignition head unit 100, the long-life low-power-consumption electric arc ignition head unit 100 and the conventional small red head unit can be compatible according to user requirements. The ignition head unit 100 and the terminal interface unit 200 are connected in a wired manner, so that the terminal interface unit 200 containing the battery and the firework product to be set off are kept at a certain safe distance, and the safety of the terminal interface unit 200 and the firework product to be set off on site can be further guaranteed.
Referring to fig. 19, when the ignition head has an abnormal problem of short circuit or open circuit damage, the terminal interface unit 200 transmits the self-checking error information to the mobile device control unit 400 through the relay signal forwarding unit 300 to notify the user of the abnormal state information of the ignition head, and simultaneously locks a faulty ignition head channel, thereby avoiding the occurrence of a false ignition action due to the ignition head fault and ensuring the safety of ignition.
Fig. 20 is an ignition self-checking circuit of the terminal interface unit 200, specifically, one of the ignition head control circuits, DC1 is an external ignition head socket, which is a connection interface between the terminal interface unit 200 and the ignition head unit 100, U1 is an electronic load switch, Ignitor _ fire1 is a control IO port of the load switch, Ignitor _ State1 is an AD sampling input port of the single chip microcomputer, R8 is a pull-up resistor of an ADC sampling port, D2 is an isolation diode, and R57 is a load matching resistor. Other elements marked with NC characters are reserved for vacant devices.
When the DC1 is not connected with the ignition head, the current loop of the sampling circuit is 3.3V → R8 → D2 → R60 → R57// R1 → GND, when the DC1 is externally connected with the heating wire ignition head, the resistance value of the heating wire is 2 omega, the short circuit is approximate, and the sampling current loop is 3.3V → R8 → D2 → DC1 → heating wire → GND. When the DC1 is externally connected with the arc ignition head, the internal resistance of the arc ignition head is about 1K omega when the arc ignition head does not work normally, and the sampling current loop is 3.3V → R8 → D2 → DC1 → the arc driving circuit → GND. When 1# and 6# of the electronic load switch U1 are damaged by short circuit, 3.3V is added to the positive electrode of D2 through R8 by 6# → R60 → D2 negative electrode of U1, and the D2 is in a reverse cut-off state because the D2 negative electrode voltage is greater than the positive electrode voltage.
The self-checking process comprises the following steps: after the electronic load switch is started, software initialization is completed, an initiator _ State1AD value is detected firstly, an AD value is less than 1.1V, it is judged that an external ignition head is connected, the AD value is greater than 3V, it is judged that the electronic load switch is in short-circuit breakdown, the working State of the switch is abnormal, self-detection is not passed, if the AD value is less than 1.6V at 1.2V, it is judged that no external ignition head is connected, the electronic load switch is in no short-circuit breakdown, the next step is carried out, the singlechip initiator _ fire1 outputs high level, the AD value is judged again, if the AD value is less than 1.6V, it is judged that the electronic load switch is in open circuit, the working State of the switch is abnormal, self-detection is not passed, if the AD value is greater than 3V, it is.
Referring to fig. 21, when the terminal interface unit 200 controls the short circuit damage of the electronic switch element of the igniter interface not to be controlled by the MCU, the switch tube of the power supply will be driven by the PWM current-limiting, and the igniter will not ignite the firework lead due to the reduction of the power supply current, thereby avoiding the accidental ignition caused by the damage of the electronic switch element and ensuring the safety of ignition.
The terminal interface unit 200 circuit power switch part designs the PWM current-limiting protection function, only when the MCU receives the correct ignition command information, the PWM current-limiting will unlock and open completely. When the MCU of the terminal interface unit 200 controls the ignition part to generate interference to cause the electronic switch of the ignition head interface to be triggered and conducted by mistake, the switch tube of the power supply part is driven by PWM current-limiting, the ignition head cannot drive the ignition head due to the reduction of power supply current, the phenomenon that mistaken ignition action is caused by abnormal interference signals is avoided, and the safety of ignition is guaranteed.
Fig. 22 is a schematic diagram of a false triggering ignition prevention protection circuit of the terminal interface unit 200, specifically, a schematic diagram of a control part of a Power supply electronic switch, a 6V battery is externally connected to P1, S1 is a Power supply switch, Power on is an IO port controlled by a single chip microcomputer, and the Power supply ignition prevention protection circuit is configured in a PWM mode, outputs a PWM wave with a duty ratio of 8KHz and 15% when starting up, and has a duty ratio of 100% when igniting and a duty ratio of 0% when shutting down.
The Power switch control part, when starting up, singlechip IO mouth Power on output 8KHz 15% duty cycle PWM ripples, and Q2 is incomplete conducting state, about 400mA when allowing continuous current to supply Power for 5V, and the load exceeds this electric current, and Q2 pressure drop increases, and VCC reduces until the singlechip resets auto-shut down. The single-chip IO port Power on can become 100% high level output only when resolving the correct ignition command in the communication protocol, namely when the received ignition command information meets the requirement, Q2 also enters a complete conduction state, and the ignition head can normally work by enough load current at the moment. Through the current-limiting design of the startup self-detection circuit and the power switch circuit, the problem of false ignition caused by hardware circuit faults can be prevented, and the safety of the user in burning is ensured.
The sealed electric heating wire ignition head adopts a heat insulation rubber pad to isolate the electric heating wire and the lead from the plastic machine body of the ignition head, so that the plastic machine body is prevented from being burnt when the lead is burnt. The heating sheet clamping and fixing part of the hollowed-out electric heating wire ignition head adopts a hollowed-out design, holes are formed in the upper side, the lower side and the two sides of the heating sheet, the hollowed-out part is not provided with an isolation rubber pad, high temperature generated during lead combustion is facilitated to dissipate heat in time, residues generated in the lead combustion process are also facilitated to be discharged, and the service life of the ignition head can be prolonged. The sealed electric heating wire ignition head and the hollowed-out electric heating wire ignition head have the same outer size of 40mm 18.1mm 22mm, and the crocodile clip opening is opened in a cambered surface lever mode, so that the design requirement of human body comfort is met.
The electric arc ignition head driving circuit adopts PWM constant current closed loop feedback control, combines the requirement of lead ignition on electric arc intensity according to the voltage change in the battery use process, adaptively adjusts PWM duty ratio, and always ensures the stability of firework ignition electric arc intensity so as to realize the reliability of firework ignition. The size of the electric arc ignition head is 60mm 22mm 27mm, the crocodile nip is opened in a double-cambered surface wave-shaped lever mode, and the cambered surface is attached to the shape of the thumb of an adult, so that the comfortable design of a human body is met; the crocodile clamp opening angle can be freely controlled by combining the matching of the torsion spring and the knurled pin, so that the firework lead with different thicknesses can be conveniently clamped. The torsion spring is made of manganese steel or stainless steel and has an antirust function; the lead clamping part of the electric arc ignition head is designed by adopting an external high-temperature-resistant metal material, so that the burning loss of the high temperature generated during the combustion of the lead to the clamping part is avoided, the accumulation of residues generated in the combustion process of the lead is also avoided, and the service life of the electric arc ignition head is prolonged. The other parts of the electric arc ignition head are opened by plastic, so that the electric arc ignition head is light in weight and convenient to clamp on the lead. The plastic part and the metal clamping part are inserted into the plastic part through the metal piece with barbs, so that the connection stability is ensured. The metal clamping part can be made of aluminum, zinc or stainless steel; the metal clamping part comprises a pair of round holes, so that the ceramic arc electrode can be conveniently led out.
The APP program installed in the mobile device control unit 400 adopts a pipeline type interactive terminal address design mode, which simplifies the user operation flow. Meanwhile, the wireless transmission protocol adopts a private protocol designed for fireworks setting off products, so that the safety of communication information is ensured, and the phenomenon that ignition action is mistakenly triggered due to mutual interference among different setting off systems is avoided, so that the setting off safety is ensured.
The firework ignition device comprises a control unit 400, a relay signal forwarding unit 300, a terminal interface unit 200 and an ignition head unit 100, wherein the control unit 400 is connected with the relay signal forwarding unit 300, the relay signal forwarding unit 300 is connected with the terminal interface unit 200, the terminal interface unit 200 is connected with the ignition head unit 100, when the control unit 400 detects that the address of the relay signal forwarding unit 300 is in a preset address list, an ignition instruction is sent to the relay signal forwarding unit 300, the relay signal forwarding unit 300 forwards the ignition instruction to the terminal interface unit 200, and the terminal interface unit 200 is used for switching on a power supply of the ignition head unit 100 when detecting that address information corresponding to the ignition instruction meets a preset matching condition, so that the ignition head unit 100 ignites fireworks. The control unit 400 sends the ignition instruction to the relay signal forwarding unit 300 only when detecting that the address of the relay signal forwarding unit 300 is in the preset address list, so that the control device can distinguish whether the relay signal forwarding unit is the relay signal forwarding unit 300 to be controlled, and avoid false start, and the terminal interface unit 200 can enable the igniter head unit 100 to be powered on to ignite fireworks only when detecting that the address information corresponding to the ignition instruction meets the preset matching condition, that is, the terminal interface unit 200 can only receive the control of the relay signal forwarding unit 300 whose address information meets the preset matching condition, and through the double verification of the relay signal forwarding unit 300 and the terminal interface unit 200, the error contact of devices can be effectively avoided to cause error contact of fireworks, and the safety performance of the fireworks ignition device is improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A firework ignition device is characterized by comprising a control unit, a relay signal forwarding unit, a terminal interface unit and an ignition head unit, wherein the control unit is connected with the relay signal forwarding unit, the relay signal forwarding unit is connected with the terminal interface unit, and the terminal interface unit is connected with the ignition head unit;
the control unit sends an ignition instruction to the relay signal forwarding unit when detecting that the address of the relay signal forwarding unit is in a preset address list, the relay signal forwarding unit forwards the ignition instruction to the terminal interface unit, and the terminal interface unit is used for switching on a power supply of the ignition head unit when detecting that address information corresponding to the ignition instruction meets a preset matching condition, so that the ignition head unit ignites fireworks.
2. A firework ignition device as claimed in claim 1, wherein the firing head unit comprises at least one of a heating wire firing head, an arc firing head and a red firing head.
3. A firework ignition device according to claim 2, wherein when the firing head unit includes a heating wire firing head, the heating wire firing head has a size of 40mm 18.1mm 22mm, and the heating wire firing head includes a sealed heating wire firing head and/or a hollowed heating wire firing head.
4. A firework ignition device as claimed in claim 1, wherein the terminal interface unit and the firing head unit are pluggable.
5. The firework ignition device of claim 1, wherein the terminal interface unit comprises a sampling circuit and a controller, the sampling circuit and the controller are both connected to the firing head unit, the sampling circuit is connected to the controller, and the controller is connected to the relay signal forwarding unit;
the sampling circuit is used for collecting the electric parameters of the ignition head unit and sending the electric parameters to the controller, and the controller is used for identifying the type of the ignition head according to the electric parameters and sending an electrifying signal corresponding to the type of the ignition head to the ignition head unit when detecting that the address information corresponding to the ignition instruction meets the preset matching condition.
6. A firework ignition device as claimed in claim 5, wherein the controller is further configured to send a self-test error message to the signal relay and forward unit upon detecting that the electrical parameter exceeds a safe threshold range.
7. A firework ignition device as claimed in claim 5, wherein the terminal interface unit further comprises a power switch, a load switch and a power supply, the controller is connected to the ignition head unit through the load switch, the controller is connected to the power switch, the power switch is connected to the power supply, and the power supply is connected to the ignition head unit;
the controller is used for adjusting the duty ratio of a signal output to the power switch according to the detected working state of the load switch.
8. A firework ignition device as claimed in claim 7, wherein the controller is further configured to adjust a duty cycle of a signal output to the power switch in accordance with the received ignition command information.
9. A firework ignition device according to claim 1, wherein the terminal interface unit and the relay signal forwarding unit are identical in external dimension and are covered by a flame retardant casing, and the terminal interface unit and the relay signal forwarding unit are 107mm x 95mm x 35mm in dimension.
10. A firework ignition device as claimed in claim 1, wherein the control unit is connected with the relay signal forwarding unit through bluetooth, the relay signal forwarding unit is connected with the terminal interface unit through a local area network, and the terminal interface unit is connected with the firing head unit through a wire.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010476711.1A CN111780623A (en) | 2020-05-29 | 2020-05-29 | Fireworks ignition device |
| PCT/CN2020/101242 WO2021237893A1 (en) | 2020-05-29 | 2020-07-10 | Firework ignition apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010476711.1A CN111780623A (en) | 2020-05-29 | 2020-05-29 | Fireworks ignition device |
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| Publication Number | Publication Date |
|---|---|
| CN111780623A true CN111780623A (en) | 2020-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010476711.1A Pending CN111780623A (en) | 2020-05-29 | 2020-05-29 | Fireworks ignition device |
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| Country | Link |
|---|---|
| CN (1) | CN111780623A (en) |
| WO (1) | WO2021237893A1 (en) |
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| US20030070572A1 (en) * | 2001-10-12 | 2003-04-17 | Hua Ken Tang | Fireworks holder with remote control firing |
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| WO2021237893A1 (en) | 2021-12-02 |
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Application publication date: 20201016 |