CN1873365A

CN1873365A - Control method and system for igniting fireworks

Info

Publication number: CN1873365A
Application number: CN 200510136640
Authority: CN
Inventors: 彭军; 颜斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-12-29
Filing date: 2005-12-29
Publication date: 2006-12-06

Abstract

The present invention relates to a control method for lighting fireworks and its system. Said system includes two portions of pattern make-up system and lighting control system. Said pattern make-up system uses voice frequency waveform and playback time as main shaft to automatically form lighting time for lighting fireworks; the lighting control system is composed of four portions: namely voice frequency analysis processing machine, lighting control main machine, line concentrator and lighting controller. Said invention can implement the complete synchronization of music playback and lighting fireworks, and its reliability is high.

Description

Igniting fireworks control method and system

Technical field

What the present invention relates to is a kind of igniting fireworks control system, kind, quantity and the combination that can come the layout igniting fireworks according to the rhythm and the artistic conception of audio frequency, in the playing process of music, accurately the fireworks effect is displayed then, perfect fireworks artistic expression is provided according to music rhythm by setting off control system.

Background technology

Growing along with the igniting fireworks technology, traditional manual firing's mode has progressively carried out the transition to electronic ignition mode, promptly by the lead-in wire of electronic ignition head with the igniting fireworks product is connected, then the electronic ignition head is powered, igniter head can be ignited, the point combustion wire, thus the igniting of realization igniting fireworks product so also provides technical foundation for automatic control ignition.

At present, the igniting fireworks control appliance of Cun Zaiing mainly contains two kinds on the market, and a kind of is the electronic ignition equipment of pure hand-guided, is equivalent to switch arrays, and promptly one group of switch of Artificial Control is just realized once igniting.Another is exactly the program-controlled electronic ignition installation, controls igniting by the pc machine usually, is about to realize programmedly set off sequence table and store the pc machine into, set off in the process, pc software reads sets off sequence table, and sending controling instruction is controlled the igniting of IGNITION CONTROL main frame to the IGNITION CONTROL main frame.Wherein, the hand-guided ignition installation is simple in structure, the ignition point limited amount of being controlled, and operation is convenient inadequately and accurately, can not finish complicated combustion fire and set off, and as the special efficacy fireworks etc., more impossiblely removes to put music fireworks.And the program control ignition installation that the back is said, can realize having seted off of special efficacy pyrotechnics, machine is infected by the virus easily but shortcoming is pc, and the general-purpose operating system is not very stable, is easy to cause system crash, in addition, because this equipment does not have and the music direct correlation yet, therefore, this set off can not accomplish with music synchronously, thereby make and set off the artistic expression that embodiment does not go out the music fireworks.

The technology of existing music igniting fireworks, common process be to use some general music editor's softwares as: CoolEdit waits and gathers audio volume control, sets the corresponding igniting address and the quantity of fireworks according to the reproduction time of corresponding audio frequency, combination; Then the result of these collections: time-address code generates the layout table by instruments such as excel and stores the pc main frame into, start-up by hand equipment carries out igniting fireworks in music then, be that setting off of pyrotechnics begin be to finish by interpersonal information transmission, because people's time-delay characteristics acoustically, must not accomplish real synchronously, so the music igniting fireworks effect that this simultaneous techniques produces compares relatively poor.

From the description of above-mentioned technological system, can recognize several problems of setting off control appliance at present:

(1) these equipment lack a specialty, effective arranging system and set off control system accurately, shortage is to most important factor in the igniting fireworks process: effective management and the control of time, do not reach the required time precision requirement of music igniting fireworks, only be applicable to those to the less demanding occasion of time precision, as traditional igniting fireworks project.

(2) simultaneously because layout is too simple, can not be reflected in the layout process the inside of igniting fireworks effectively for the far-reaching all multielements of time factor in the igniting fireworks, as rise time of ignition fuse, display shell, effect time or the like, the system that makes can not implement accurately igniting effectively and set off, and also just can not guarantee truly music and igniting fireworks synchronous.

(3) owing to lack effective management, layout and necessary detection means, in fact these systems can not implement setting off of music fireworks effectively, reliably; Igniter is easy to generate mistakes such as error code, duplication code, idle bit.

(4) cooperation of the vision by the people and the sense of hearing carry out music and fireworks burning synchronously, so-called synchronously just music and combustion fire set off simultaneously and begin, the back can not carry out separately more that both are synchronous.Therefore, the rhythm match ratio of music and igniting fireworks is relatively poor.

Summary of the invention

Technical problem to be solved by this invention is: solve the problem that above-mentioned prior art exists, and provide a kind of music and fireworks burning can realized synchronous fully, real igniting fireworks control method and the system that guarantees that music rhythm and igniting fireworks effect fit like a glove, this control system adopts tree-shaped connection, to greatest extent line fault is confined to some sub-districts, can not influence working on of miscellaneous part, improve the functional reliability of system greatly; Advanced salvo technology realizes that really the multichannel ignition point lights a fire simultaneously, has improved the aesthetic feeling of viewing and admiring greatly.

The technical solution used in the present invention is: whole system is divided into two parts, be graphical arranging system and set off control system, arranging system carries out required fireworks kind of setting off, quantity, set off the definition of time, and the distribution of corresponding IGNITION CONTROL point numbering, set off the igniting that RACS then is responsible for implementing according to the layout table control point; Graphical arranging system is a main shaft with audio volume control and reproduction time, and editor takes out the audio volume control timing node that the fireworks object that will set off is dragged and dropped into appointment from the fireworks storehouse, and system generates fireworks actual durations of ignition of setting off automatically;

Concrete grammar is: open the audio file of need playing in system, system carries out waveform analysis to this audio file, the pairing waveform of this audio file that draws-time contrast figure, and obtain the required foundation of igniting fireworks layout: waveform-time is with reference to main shaft; In system, play this audio file, gather ignition time point, identify with graphical symbol according to the rhythm and the artistic conception of audio frequency; After the ignition time point collection is finished, from the fireworks database, the graphical symbol of this less important fireworks object of setting off of sign is dragged and dropped into the ignition time point of appointment, can set simultaneously lead-in wire, rise time, the effect time attribute of these fireworks, system generates fireworks actual durations of ignition of setting off according to these attributes automatically; After all ignition time points are all set and finished, preserve marshal data; At last these marshal data are downloaded in the igniting fireworks controller, the igniting fireworks controller will generate corresponding with this layout duration of ignition-address code table of comparisons, implement igniting fireworks according to this table content then and accurately control.

Setting off control system is made up of four parts: i.e. audio analysis processor, set off main control system, hub and IGNITION CONTROL machine; Set off main control system by 6.4 cun TFT liquid crystal displays, keyboard scan, Industry Control mainboard and contain 1 Ethernet interface and 2 RS-232 interfaces, form by wire module, wireless module, setting off main control system is the core of whole system, it is the carrier of setting off control software, it receives the audio synchronous signal and the synchro system that send over from the audio frequency processor by communication module Ethernet/802.11 wireless networks and sets off the control time, and sends the IGNITION CONTROL instruction by another group communication module can bus module/general radio frequency module to hub; Or receive artificial ignition order by the man-machine interface of setting off main control system, send firing command to hub; Hub is made up of wire module CAN bus module or telecommunication module and 1 wireless module general radio frequency module hub integrated circuit board, 2, be used for connecting and set off main control system and IGNITION CONTROL machine, as network trunk and separation, be responsible for setting off the data transmission between main control system and the IGNITION CONTROL machine; The IGNITION CONTROL machine provides wired communication interface, accepts and respond the control command that hub forwards; Igniter head interface of IGNITION CONTROL machine directly connects the lead of electronic ignition head, after the IGNITION CONTROL machine receives firing command, send initial firing current to respective channel, lights a fire; The audio frequency processor is made up of 6.4 cun TFT liquid crystal displays, keyboard scan, Industry Control mainboard, wire communication module or wireless communication module, the audio frequency processor provides audio frequency to play and audio signal is extracted, carry out the selection of two kinds of patterns by man-machine interface, the wireless signal strength monitoring is provided simultaneously; Audio-frequency play mode, the audio frequency processor send stereophonic signal to audio output interface, in synchronizing time point to setting off main control system transmitting time synchronizing information; The audio extraction pattern is then extracted audio signal by audio input interface and the synchronizing information of extracting is sent to by communication module and sets off main control system, realize audio frequency play and set off be controlled at temporal fully synchronously.

The Industry Control mainboard of audio analysis processor adopts the EW-AM3902-B0 industrial control board of Shenzhen hundred million Weir computer Co., Ltds, adopts the ARM9312 chip, 64M SDRAM, 64M FLASH and 20G notebook hard disk, band AC97 sound card provides TFT LCD Interface, and 100M is provided Ethernet interface.TFT LCD screen is too 6.4 cun screens of source, Taiwan, and wireless module adopts XI-1500-IH 802.11 wireless bridges of Nanjing Zhidakang Wireless Communication Science and Technology Co.,Ltd..

Set off main control system the Industry Control mainboard adopt the EW-AM3902-A3 industrial control board of Shenzhen hundred million Weir computer Co., Ltds, adopt the ARM9312 chip, 32M SDRAM, 16M FLASH, TFT is provided LCD Interface, RS232 interface and 100M Ethernet interface of 2 standards is provided; TFT LCD screen is too 6.4 cun screens of source, Taiwan.

Wireless module adopts XI-1500-IH 802.11 wireless bridges of Nanjing Zhidakang Wireless Communication Science and Technology Co.,Ltd., and this equipment provides the Ethernet interface of a 100Mbps.

The general radio frequency wireless module adopts the SRWF-508 type wireless module of Shanghai Sunray Technology Co., Ltd., and this module provides a RS232 interface, and wireless transmission distance is 4000 meters.

Aforesaid graphical arranging system, adopted following key technology:

1) audio file (Wav) waveform analysis

The artistic conception of rhythm that the setting off of music fireworks need conform with audio frequency and performance music, so the waveform analysis of audio file just seems particularly important for the setting off of music fireworks.Audio files saves as the .Wav file usually, and the Wav file format is a standard very.System is according to the analysis of Wav file waveform, the contrast figure of the waveform of the audio files that draws and time, and the waveform-time that obtains the igniting fireworks layout is with reference to main shaft.

2) visual graphical layout

Fireworks object and the complete symbol of audio files that will play and graphical that actual needs is seted off by system, the core of arranging system is to adopt up-to-date computer technology to merge the visual arrangement software that forms, this software is axle with music rhythm and timing node, the graphical symbol of the fireworks object that only need will set off a sign from fireworks fireworks database during editor is dragged and dropped into the audio volume control timing node of appointment, and system is with the automatic actual duration of ignition of setting off of audio volume control place time point generation fireworks according to appointment; Simultaneously because the characteristics of firework product itself, the fireworks of some kind have lead-in wire or rise time, effect time, these attributes can both different colors identify, and can reflect actual fireworks and the effect that each time point will be seted off in the process of setting off very intuitively.

3) the scaling technology of arranging image

Usually for the control of igniting fireworks, time precision is an a crucial factor, and time precision is high more, and the synchronous accuracy of music is also just high more.For the convenience of layout, waveform time corresponding precision is controlled at the 100ms level mostly generally speaking, but requires the place of special efficacy or pinpoint accuracy in some of music igniting fireworks, and the time precision of 100ms not enough.Arranging system can carry out scaling (comprising elements such as waveform, time shaft, fireworks glyph image) smoothly to the layout image according to the actual required time precision of setting off, and improves the required time precision of layout.The highest time precision can reach 10ms (precision of like product is 33ms in the world).

After layout is finished, system will generate one group automatically and set off the layout table, and this layout table will be as the input data of RACS, and RACS will carry out the actual control of setting off according to this programming content.It is to adopt intel Pentium 4 2.0 above CPU, 512M internal memory, the pc machine or the portable computer of 32M video memory at least that the hardware platform of this subsystem software operation requires.

The basic principle of native system is based upon on the audio signal processing technique basis, the one, the L channel by wiping the audio file (.wav) that will adopt or the music signal of R channel, temporal information (shift time of the initial broadcast of the music relatively) modulation of music (can be adopted the fsk modulation technique, qsk modulation technique etc.) on the sound frequency that people's ear can be heard, sound waveform after will modulating again is written on the sound channel of having wiped voice signal, again this audio file is made into the CD video disc or directly this audio file is copied in the memory of corresponding Memory player to the logical pc machine of the hardware platform of this part work needs one Daepori and a cd CD writer.When setting off, this CD or player are directly offered on-the-spot sound man, and the sound channel that will contain the music synchronizing signal by tone frequency channel wire in the other side's CD player or the player is received on the audio frequency processor.When playing music, the audio frequency processor carries out demodulation by analyzing the waveform that passes the audio signal of coming according to the demodulation techniques of correspondence, obtains the temporal information of music.The 2nd, be speed according to the size of audio file according to sampling, channel number and sampling resolution determine, broadcasting speed equally also is according to this principle, otherwise sound causes changing voice owing to stall, therefore, according to this principle, we obtain the temporal information of music to this equipment according to the file size of playing when playing music.Like this, we just can obtain the music temporal information at any from two kinds of technology of extracting the audio frequency times, with this time with set off the control time synchronously or directly should the time beat as the time beat of setting off control, the time that just can realize time of igniting fireworks and music is in full accord, thus realize real synchronously.

Technical characterstic:

1) salvo technology

Because the time-delay characteristics of communication transmission, point has a sequencing in time to the single-point communication of multiple spot, the transmission of firing command will make a plurality of equipment light a fire one by one one by one, the time interval between adjacent twice igniting is determined by the communication speed of circuit fully, communication speed for 19200bps, if firing command is 3 bytes, igniting response time difference between then per two equipment is 3*8/19200s, be approximately 1.25ms, this is not also counted in and handles time-delay, 100 nodes if light a fire so simultaneously then differ nearly 125ms the duration of ignition of the duration of ignition of first node and last node.From spectators' angle, just can find that visually this is not once real salvo so.In order to address this problem, we utilize broadcasting instructions can trigger the principle of each ignition controller response simultaneously, adopt twice instruction transmission technology to light a fire, at first by sending prepositioned instruction one by one, the IGNITION CONTROL machine that notice participates in igniting is ready to corresponding channel number, by the instruction of broadcasting salvo, the IGNITION CONTROL machine that all should participate in will make an immediate response, thereby realize real salvo technology then.

2) same ignition controller multichannel salvo technology

Conventional art all is to light a fire by the adhesive that decoder drives relay, therefore the unit passage of can only lighting a fire simultaneously, we adopt the MOS switching tube to add latch now, directly write the phase of latching driving switch simultaneously by the single-chip microcomputer pin, thereby realize that a single point firearm multichannel lights a fire simultaneously.

3) firing technique

Because igniting is the instantaneous discharge by power supply to produce big electric current and could take place, if directly discharge by battery like this, voltage will descend very fast, can not guarantee effective igniting, if by bus-powered igniting, to very high request be proposed to the line load ability, especially when salvo, therefore, we utilize the electric capacity can the accumulate principle, the accessory system igniting, when misfiring, electric capacity then charges by bus power source, discharge during igniting, promptly guarantee instantaneous big discharge current, can prevent that also bus current is excessive or bus voltage is dragged down and make SCM system reset.

4) the complete synchronous control technique of music

Main control system receives synchronizing signal, and startup is seted off, and keeps music in full accord with the rhythm of setting off.If do not receive synchronizing signal, then pick up counting, if all do not receive synchronizing signal continuously several times, then suspend and set off, unless manually boot.

5) the distributed unified control of main frame of setting off more

Can support maximum 32 unified controls of setting off main control system, each is seted off main frame and can support a plurality of hubs to connect again, each hub can connect a plurality of ignition controllers, and whole system can be controlled 32*255*16 ignition point at most, can finish setting off of super-huge fireworks.

Music is acoustically extremely being born the characteristics of appeal in conjunction with fireworks powerful impulsive force visually, to forge a kind of fire and music to the people, the perfect effect of light and rhythm, it is in the same place fireworks moulding in different poses and with different expressions, changeable, mysterious and impassioned interesting to listen to, beautiful incomparable music blending, create the fiery trees and silver flowers all night with lights turned on of bright dipping and look, being that art merges with the perfection of science and technology, is a kind of brand-new seeing and hearing enjoyment.Coincide if can not accurately guarantee both rhythm, effect will be had a greatly reduced quality, and this cover system designs for the perfect adaptation that guarantees both.This system also can break away from music and carries out igniting fireworks automatically accurately according to setting off the layout table in addition, guarantees the time accuracy of setting off of ms level, has improved the artistic expression of igniting fireworks greatly.Owing to realized intelligent igniting, the scene of setting off does not need personnel to participate in, safety of persons in the time of can better guaranteeing igniting fireworks like this.

Description of drawings

Fig. 1 is a system architecture diagram of the present invention

Fig. 2 handles dynamo-electric theory diagram for audio frequency

Fig. 3 is for setting off the dynamo-electric theory diagram of control

Fig. 4,5 is that hub integrated circuit board and CAN module are implemented circuit diagram

Fig. 6,7 is igniter enforcement circuit diagram

The specific embodiment

Whole system of the present invention is divided into two parts, be graphical arranging system and set off control system, arranging system carries out required fireworks kind of setting off, quantity, set off the definition of time, and the distribution of corresponding IGNITION CONTROL point numbering etc., set off the then responsible igniting of RACS and (guarantee actual set off time and strict coincideing of layout time according to layout table enforcement control point, be accurate to the ms level), programmed effect is shown really, these two subsystems are interrelated, interdepend, and below we set forth separately two subsystems:

Graphical arranging system

Native system provides a kind of visual graphical music igniting fireworks arranging system, has greatly improved the operability of igniting fireworks layout and the accuracy of the duration of ignition.Thereby the igniting fireworks that guarantees the control of igniting fireworks control appliance can reach synchronous with music on the just sincere justice.The principle of this arranging system is to be main shaft with audio volume control and reproduction time, only need to take out from the fireworks storehouse audio volume control timing node that the fireworks object drag and drop that will set off are put into appointment during editor, system is with the automatic actual duration of ignition of setting off of audio volume control place time point generation fireworks according to appointment; Thereby guarantee that igniting fireworks follows that music rhythm is strict in time to coincide (accuracy can reach the ms level), can reach the requirement of music igniting fireworks fully.

The concrete grammar flow process is as follows: open audio file (Wav) file that needs broadcast in system, system carries out waveform analysis to this audio file, the pairing waveform of this audio file-time contrast figure that draws, obtain the required foundation of igniting fireworks layout: waveform-time is with reference to main shaft; In system, play this audio file, gather ignition time point (with the graphical symbol sign) according to the rhythm and the artistic conception of audio frequency; After the ignition time point collection is finished, from the fireworks database, the graphical symbol of this less important fireworks object of setting off of sign is dragged and dropped into the ignition time point of appointment, can set simultaneously the attributes such as lead-in wire, rise time, effect time of these fireworks, system generates fireworks actual durations of ignition of setting off according to these attributes automatically; After all ignition time points are all set and finished, preserve marshal data; At last these marshal data are downloaded in the igniting fireworks controller, the igniting fireworks controller will generate corresponding with this layout duration of ignition-address code table of comparisons, implement igniting fireworks according to this table content then and accurately control.

Set off control system

Native system is made up of four parts: i.e. audio analysis processor part, set off the main control system part, and hub is partly and IGNITION CONTROL machine part.Set off main control system 6.4 cun TFT liquid crystal displays are provided, keyboard interface, Ethernet interface and can EBI, setting off main control system is core, whole system ground, it is the carrier of setting off control software, its logical 802.11b wireless bridge module or Ethernet receive the signal from the audio frequency processor, (adopt 12 core shielded cables by can EBI connecting hub, wherein 5 pairs of lines are used for the long-distance transmissions power supply, 1 pair as holding wire) or be connected to the wireless radiofrequency module by RS-232 interface, receive the audio synchronous signal that sends over from the audio frequency processor by Ethernet, synchro system is seted off the time, and sends the IGNITION CONTROL instruction by can EBI or RS-232 interface to hub; Also can receive artificial ignition order, send firing command to hub by the man-machine interface of setting off main control system.Hub provides 3 12 core can EBIs and 64 core card dragon interfaces, 1 RS-232 interface, be connected to by 12 core can EBIs and set off main control system and other hubs and (adopt 12 core shielded cables, wherein 5 pairs of lines are used for the long-distance transmissions power supply, 1 pair as holding wire), be connected to the wireless radiofrequency module by RS-232 interface, connect ignition controller (adopting 4 core shielded cables) by 4 core can EBIs, it is used to connect can backbone bus and can branch bus or wireless network and can branching networks, play bus relaying and compartmentation, communication failure can be confined to the part, can not influence the operate as normal of other parts.Ignition controller provides 24 core cards dragon can EBI and 2 group address toggle switch, 16 igniter head interfaces, it is connected to hub by 4 core cards dragon can EBI, also can directly be connected with other ignition controllers by 4 core cards dragon interface, the address toggle switch is convenient to the ignition controller unified addressing, by igniter head interface of ignition controller, the lead that directly connects the electronic ignition head, after ignition controller receives firing command, will send initial firing current, light a fire to respective channel.The audio frequency processor provides 6.4 cun TFT liquid crystal displays, keyboard interface, Ethernet interface and COBBAIF (stereo interface, 3 core cards dragon interface, lotus flower head interface), be connected with audio frequency power amplifier by audio output interface, or be connected with audio player by audio input interface, connecting the 802.11b wireless bridge by Ethernet interface, the audio frequency processor provides audio frequency to play and the audio signal abstraction function, carry out the selection of two kinds of patterns by man-machine interface, the function of wireless signal strength monitoring is provided simultaneously; If audio-frequency play mode, then the audio frequency processor send stereophonic signal to audio output interface, in synchronizing time point to setting off main control system transmitting time synchronizing information; If the audio extraction pattern then sends to by audio input interface extraction audio signal and with the synchronizing information of extracting and sets off main control system.

Physical circuit is analyzed

1) audio frequency processor circuit explanation

As Fig. 2, the Industry Control mainboard is connected to LCD display by TFT interface on the plate, the GPIO mouth connects keyboard scan (8*8 keyboard) on the plate, connect hard disk by ide interface on the plate, sound card interface is as the input/output interface of audio frequency, and Ethernet interface is used to connect 802.11 wireless modules or is directly connected to sets off main control system.

The Industry Control plate is opened the audio file that needs broadcast from harddisk memory, start when playing, set off sign on by the ethernet controller transmission, whenever sent later the voice data of a period of time, send an audio synchronous signal by ethernet controller to setting off controller, voice data send sound card to output to Music Radio and plays.Perhaps gather the external played device and pass the audio signal that contains temporal information of coming by the AD acquisition function (or demodulator circuit or special-purpose AD acquisition chip) of sound card, obtain the music temporal information by software (or hardware) demodulation, the audio frequency processor then sends this temporal information by ethernet controller to setting off main control system.

2) set off the explanation of main control system circuit

As Fig. 3, the Industry Control mainboard is connected to LCD display by TFT interface on the plate, the GPIO mouth connects keyboard scan (8*8 keyboard) on the plate, Ethernet interface is used to connect 802.11 wireless modules or is directly connected to the audio frequency processor, RS232 interface 1 is used to connect the CAN bus module, and RS-232 interface 2 is used to connect the general radio frequency wireless module.

The control of setting off of fireworks is provided, man-machine interfaces such as igniter test, but this equipment of direct control carries out on-the-spot igniting fireworks.This equipment obtains synchronous control signal by wired (Ethernet) or wireless (802.11 is wireless) and the communication of audio frequency processor simultaneously, the control igniting fireworks.Setting off main control system and subordinate's IGNITION CONTROL machine or hub can carry out communication by wired (can bus) or wireless (general radio frequency is wireless), transmits control and sets off instruction control igniting.

This is seted off main control system and receives the music synchronizing signal from Ethernet interface, start the rhythm of setting off with synchronous fireworks, to set off control instruction launches by can bus or wireless module, the igniting of drive point firearm, also can set off main frame, the igniting of control IGNITION CONTROL machine by operating this manually.

3) hub/serial ports changes the explanation of can module circuit diagram

Purpose of design:

In music fireworks automatic control system, because ignition terminal much and is relatively disperseed, so we just finish the signal transmission work of main frame and each ignition terminal with the CAN communication system with high reliability, because the carrying load ability of CAN chip is limited and transmission range does not reach our designing requirement, therefore for carrying load ability that disperses the CAN chip and the transmission destination that realizes farther distance, we have just designed the CAN repeater of CAN commentaries on classics CAN.Serial ports changes CAN and is preserved for the scheme of major network with the wireless mode transmission.

Realize function:

Realize the relaying of CAN signal, be forwarded to another straton net (or major network) again after promptly the CAN signal that receives from major network (or subnet) being stored by specific chip reception.

Realize of the transformation of CAN signal to rs 232 serial interface signal (perhaps rs 232 serial interface signal is to the CAN signal).

This circuit theory:

The master cpu of this circuit is a S52 Series chip, and that link to each other with it is two CAN communication chip SJA1000 and a serial ports level translator MAX232, SJA1000 and MAX232 co-ordination under the control of single-chip microcomputer.If this circuit is used as the CAN repeater, two SJA1000 chips then will be connected on respectively among two different CAN networks to realize the outgoing telecommunication of CAN, their a slices are connected on core network (master controller) in music fireworks control system, and another sheet then is connected among the subnet (ignition terminal); If this circuit is used as the CAN-serial converter, then their MAX232 and SJA1000 will be connected on respectively among a serial ports network and the CAN network, to realize the transformation of transmission signal, in the wireless solution of music fireworks control system, trunk CAN net will be replaced by wireless network, the wireless network internal transmission then be rs 232 serial interface signal, wireless receiving module can be passed to single-chip microcomputer by MAX232 with the rs 232 serial interface signal that receives, and single-chip microcomputer passes to the signal that receives in the ignition terminal of subnet again and goes by SJA1000.

The specific implementation of this circuit

Power unit

Because what native system adopted is remote power feeding, line loss is bigger, and we have just selected the higher DC-DC conversion chip LM2575-5 (U1 among Fig. 4) of efficient for use, the input of+35V is converted to+5V output powers to system.

Single-chip microcomputer and peripheral components

What the single-chip microcomputer of native system adopted is the chip (U15 among Fig. 4) of S52 series, except the required chip of single-chip minimum system, the reset circuit part has also added a watchdog chip MAX813L (U9 among Fig. 4) and can not automatically reset to prevent program from running dead.The frequency of the crystal oscillator of single-chip microcomputer is 24MHz.

Single-chip microcomputer and serial ports

The RXD of single-chip microcomputer (U1) and TXD connect the end of MAX232 (U10 among Fig. 4), and the other end of MAX232 then directly receives the outside rs 232 serial interface signal of sending here.The signal of so outside serial ports network just can be sent into single-chip microcomputer indirectly.

Single-chip microcomputer and CAN chip

Single-chip microcomputer cooperates with corresponding read-write with the P2 mouth by the P0 mouth the visit of external RAM again to be realized, and 51 Series chip have the visit of specific assembly instruction support to external RAM, and SJA1000 (U6 among Fig. 5 and U7) is compatible with 51 Series chip.So we can regard SJA1000 as an external RAM that has only 128 bytes, single-chip microcomputer can realize to the control of SJA chip and reading of CAN data that by the RAM data of these 128 bytes being operated just bus connection method is the corresponding position of P0 mouth that the AD0-AD7 of SJA1000 is connected to single-chip microcomputer respectively particularly; The RD of SJA1000, WR and ALE mouth are connected to RD, WR and the ALE mouth of S52 respectively; Because there are two SJA1000 chips to be connected in parallel, so we can only operate a chip a time, so we have used the P2.0 of S52 and P2.1 to come sheet to select one of them of two SJA1000 again; The reset signal of two SJA1000 is connected in parallel on together, and reset simultaneously with single-chip microcomputer (reset level different so be connected by phase inverter); It will notify single-chip microcomputer to fetch data after having expired when the memory of accepting of SJA1000, and the method for notice is exactly to transmit interrupt signal to single-chip microcomputer, and therefore the interrupt signal line of two SJA1000 is connected to two middle fractures of single-chip microcomputer respectively.The crystal oscillator of SJA1000 chip is 24MHz.

The output signal of SJA1000 can not directly be connected on the CAN bus, and it will just can be connected to the CAN bus by a CAN bus driver chip.Here our the CAN bus driver chip selected for use is P82C250 (U4 among Fig. 5 and U5).In order to make SJA1000 and CAN bus driver chip not disturb good communication mutually.We have just sealed in high-speed light lotus root 6N137 (U11-U14 among Fig. 5) between SJA1000 and P82C250, realized good electrical equipment isolation.The output signal of P82C250 just can directly be connected on the CAN bus.

Concrete line of circuit diagram and explanation

U15 among Fig. 4 (AT89S52) is an embedded scm, is responsible for the calculating and the analysis of entire circuit.

U9 (MAX813) is the system monitoring and the chip that resets, and the 9th pin of its 7th pin and U15 joins (reset signal), provides reset signal for U15 when powering on.Its 6th pin is connected with the 28th pin of U15, and watchdog function is provided, and by the U9 timing reset, automatically resets when undesired when system occur to crash or moves.

By crystal oscillator Y2 and capacitor C 28, the outer clock circuit that C29 forms connects 18,19 pin of U15, for the MCU of U15 provides clock.

Integrated circuit U10 (MAX232) is a level shifting circuit, and the 10th, 11 pin of U15 connect 9,10 pin of U4, through U10 Transistor-Transistor Logic level are converted to the RS-232 level.Constitute the serial line interface of RS-232 by the 7th, the 8 pin output of U10.

U6 and U7 (SJA1000) are two independent CAN communication controllers, and 21 pin of U15 and 22 pin are as both chip selection signals.1,2 pin of U6 and U7 is connected with the 32-39 pin of U15 as the address date multiplex bus with 23-28 pin (AD0-AD7).5, the 6 pin read-writes of U15 are connected with 16, the 17 pin read-writes of U6 and U7, and the 3rd pin of U6 and U7 and the 30th pin of U15 are connected.The 16 pin interrupt requests of U6 are that 12 pin are connected with the interruption of U15 0, and the 16 pin interrupt requests of U7 are interrupted 1 with 13 pin of U15 and are connected.The 9th pin of U15 is connected with the 17 pin preset pin of U6 and U7 by phase inverter.In order to strengthen the antijamming capability of CAN bus node, the 13rd pin CTX0 of U6 and the 19th pin CRX0 connect the 3rd pin of light idol U11 (6N137) and the 6th pin of light idol U12 (6N137) respectively, by linking to each other with 82C250 behind the high-speed light idol 6N167, the 13rd pin CTX02 of U7 and the 19th pin CRX02 connect the 3rd pin of light idol U13 (6N137) and the 6th pin of light idol U14 (6N137) respectively, by linking to each other with 82C250 behind the high-speed light idol 6N167, realized that well the internodal electrical equipment of each CAN is isolated on the bus.

U11, U12, U13, U14 (6N137) is a photoelectronic coupler, and the 6th pin of U11 connects the 1st pin of U4, and the 3rd pin of U12 connects the 4th pin of U4; The 6th pin of U13 connects the 1st pin of U5, and the 3rd pin of U14 connects the 4th pin of U5.

U4 (82C250) and U5 (82C250) are the CAN bus transceiver, and the 7th pin respectively is connected with the CAN bus by one 10 Ohmic resistance with the 6th pin, and resistance plays certain metering function, and protection U4 or U5 avoid overcurrent and impact; The little electric capacity of two 30P in parallel between CANH and CANL and the ground; High-frequency Interference on can the filtering bus and certain anti-electromagnetic radiation ability; between two CAN bus incoming ends and ground respectively reversal connection a protection diode; when the CAN bus has higher negative voltage; can play certain overvoltage protection effect by diode current flow; connect a slope resistance on the 8th pin RS pin of U4 or U5, resistance sizes can suitably be adjusted according to Bus Speed, generally between 16K-140K.

U1 (LM2575-5) is the voltage-stabilized power supply chip, with bus upload+the 35V dc source is converted to+the 5V dc source, as the system works power supply.

U2 (B0505S) and U3 (B0505S) are two independently dc source isolating devices, other digital device part of two CAN communication chip power supplys and this circuit is not disturbed mutually, wherein the 1st pin of U2 and U3 connects input ground, the 2nd pin of U2 and U3 connects+the 5V input, the 4th pin of U2 and U3,3 pin are respectively the power supply and ground of output.

External interface:

Native system has 12 interfaces, and an interface is serial interface (J12 among Fig. 4), with being connected of realization and outside Serial Port Line; Three CAN EBIs (J1-J3 among Fig. 5) are connected in parallel, and belong to a CAN network.Other eight CAN EBIs (J4-J11 among Fig. 5) are connected in parallel, and belong to another one CAN network.

4) end point ignition control system circuit diagram explanation

Purpose of design:

Receive and the response Host Command, igniter head is carried out continuity testing or control igniting.

The function that this circuit is realized:

Realize the reception of CAN signal.

The order that parsing receives and triode made suitable control (igniting).

The principle of this circuit:

The master cpu of this circuit is a single-chip microcomputer of S52 series, what link to each other with it is a CAN communication chip SJA1000 and two latch, also have some IO mouths to link to each other with triode in addition and control the break-make of triode or metal-oxide-semiconductor, subsidiary serial port function is retained use.SJA1000 is used to receive the data command on the CAN bus, and order is just resolved computing after receiving by single-chip microcomputer.Single-chip microcomputer will be made corresponding igniting action in due course then, ignition process is such, to two eight latch input data, these data (0 or 1) are used as the make-and-break signal of controlling each road triode to single-chip microcomputer earlier, and these all are prefiring preparations.After ignition order was brought, single-chip microcomputer is the public pole of cut-in point duration and degree of heating (realize with triode driven MOS pipe, all disconnect usually, just the connection in a flash of igniting) just, and so just igniting is finished.When entering detected state, the metal-oxide-semiconductor of public pole disconnects, and the triode of controlling each road is connected successively, and we detect the voltage of output then, and when the voltage of output was non-vanishing, then corresponding passage was that wiring is normal, otherwise unusual.

The specific implementation of this circuit

Power unit

Because what native system adopted is remote power feeding, line loss is bigger, and we have just selected the higher DC-DC conversion chip LM2575-5 (U15 among Fig. 7) of efficient for use.

Single-chip microcomputer and peripheral components

What the single-chip microcomputer of native system adopted is the chip (U1 among Fig. 6) of S52 series, except the required chip of single-chip minimum system, the reset circuit part has also added a watchdog chip MAX813L (U7 among Fig. 7) and can not automatically reset to prevent program from running dead.The frequency of the crystal oscillator of single-chip microcomputer is 24MHz.

Single-chip microcomputer and CAN chip

Single-chip microcomputer cooperates with corresponding read-write with the P2 mouth by the P0 mouth the visit of external RAM again to be realized, and 51 Series chip have the visit of specific assembly instruction support to external RAM, and SJA1000 (U14 among Fig. 7) is compatible with 51 Series chip.So we can regard SJA1000 as an external RAM that has only 128 bytes, single-chip microcomputer can realize to the control of SJA chip and reading of CAN data that by the RAM data of these 128 bytes being operated just bus connection method is the corresponding position of PO mouth that the AD0-AD7 of SJA1000 is connected to single-chip microcomputer respectively particularly; The RD of SJA1000, WR and ALE mouth are connected to RD, WR and the ALE mouth of S52 respectively; The crystal oscillator of SJA1000 chip is 24MHz.

The output signal of SJA1000 can not directly be connected on the CAN bus, and it will just can be connected to the CAN bus by a CAN bus driver chip.Here our the CAN bus driver chip selected for use is P82C250 (U13 among Fig. 7).In order to make SJA1000 and CAN bus driver chip not disturb good communication mutually.We have just sealed in high-speed light lotus root 6N137 between SJA1000 and P82C250 (U11 among Fig. 7 U12), has realized good electrical equipment isolation.

The output signal of P82C250 just can directly be connected on the CAN bus.

The firing circuit that single-chip microcomputer IO mouth drives

Native system has been selected two SN74S373 latch (U3 among Fig. 6 and U4) for use, because the input of two 373 latch and the input bus of SJA1000 are multiplexing, realize the sheet of three logical devices is selected so just formed a logic circuit with 74LS138 decoder AND.The latch carrying load ability is not strong, drives chip ULN2803 (U5 among Fig. 6 and U6, essence is to have encapsulated eight Darlington transistors) so added one in the back one-level again, so just can drive powerful compound PNP pipe TIP147 (Q1-Q16 among Fig. 6).As long as the different value of input just can realize the connecting and disconnecting to 16 road each road of compound transistor in 373 latch.Wanting realizes successfully lighting a fire just also must also connect their public earth polar, just the pipe of the Q18MOS among the figure is connected.As shown in Figure 6, as long as P3_4 is a low level, then triode Q17 conducting, metal-oxide-semiconductor conducting then.373 latch are that the pairing respective channel of high level just has thirties volts ignition voltage.When being detected state, we just connect and want the pairing triode of sense channel, and the disconnection of public metal-oxide-semiconductor, if like this wiring errorless among the figure P3_5 will detect high level, otherwise be low level.

Concrete line of circuit diagram and explanation

U1 among Fig. 6 (AT89S51) is an embedded scm, is responsible for the calculating and the analysis of entire circuit.

U7 (MAX813) is the system monitoring and the chip that resets, and the 9th pin of its 7th pin and U1 joins (reset signal), provides reset signal for U1 when powering on.Its 6th pin is connected with the 13rd pin of U1, and watchdog function is provided, and by the U1 timing reset, automatically resets when undesired when system occur to crash or moves.

By crystal oscillator Y1 and capacitor C 19, the outer clock circuit that C20 forms connects 18,19 pin of U1, for the MCU of U1 provides clock.

Integrated circuit U8 (MAX232) is a level shifting circuit, and the 10th, 11 pin of U1 connect 9,10 pin of U8, through U8 Transistor-Transistor Logic level are converted to the RS-232 level.Constitute the serial line interface of RS-232 by the 7th, the 8 pin output of U8.

U14 (SJA1000) is the independent CAN communication controller, and 21,22 pin of U1 are by the synthetic chip selection signal of decoder.1,2 pin of U14 is connected with the 32-39 pin of U1 as the address date multiplex bus with 23-28 pin (AD0-AD7).5, the 6 pin read-writes of U14 are connected with 16, the 17 pin read-writes of U1, and the 3rd pin of U14 and the 30th pin of U1 are connected.The 16 pin interrupt requests of U14 are that 12 pin are connected with the interruption of U1 0.The 9th pin of U1 is connected with the 17 pin preset pin of U14 by nor gate.In order to strengthen the antijamming capability of CAN bus node, the 13rd pin TXO_SJA of U14 and the 19th pin RXO_SJA connect the 3rd pin of light idol U11 (6N137) and the 6th pin of light idol U12 (6N137) respectively, by linking to each other with 82C250 behind the high-speed light idol 6N167, realized that well the internodal electrical equipment of each CAN is isolated on the bus.

U2 (B0505S) is a dc source isolating device, other digital device part of CAN communication device power supply and this circuit is not disturbed mutually, and wherein the 1st pin of U2 connects input ground, and the 2nd pin of U2 connects+the 5V input, the 4th pin of U2,3 pin are respectively the power supply and ground of output.

U11, U12 (6N137) is a photoelectronic coupler, and the 6th pin of U11 connects the 1st pin of U13, and the 3rd pin of U12 connects the 4th pin of U13 by a resistance.

U13 (82C250) is the CAN bus transceiver, and the 7th pin respectively is connected with the CAN bus by one 10 Ohmic resistance with the 6th pin, and resistance plays certain metering function, and protection U13 avoids overcurrent and impacts; The little electric capacity of two 30P in parallel between CANH and CANL and the ground; High-frequency Interference on can the filtering bus and certain anti-electromagnetic radiation ability; between two CAN bus incoming ends and ground respectively reversal connection a protection diode; when the CAN bus has higher negative voltage; can play certain overvoltage protection effect by diode current flow; connect a slope resistance on the 8th pin RS pin of U13, resistance sizes can suitably be adjusted according to Bus Speed, generally between 16K-140K.

U10 is 4 nor gates, and wherein two groups are taken as phase inverter usefulness, to realize the shaping to level.Be 2, the 6 pin ground connection of U10, the 5th pin connecting resistance R23 of U10 and R24 detection (R23, R24 constitute divider resistance to be fit to the U10 input) to realize level, the 4th pin of U10 connects 15 pin of U1, promptly gives single-chip microcomputer detected voltage through anti-phase shaping.The 3rd pin that the 1st pin of U10 meets the 9th pin (reset signal) U10 of U1 connects the 17th pin of U14, just their reset signal is connected together, but they to reset be respectively that high-low level is effective, so the centre will add phase inverter.U9 (74LS138 decoder) and U10 (CD4001 nor gate) constitute address decoder, are responsible for U3 by the data signal that they produce, and U4, U14 operate with sheet and select.21,22 pin (address wire) that the concrete mode of connection is U1 connect 1,2 pin of U9, and 15 pin (decoding output signal) of U9 connect the 4th pin of U14.14,13 pin (address output signal) of U9 connect 9,12 pin of U10 respectively.The 16 pin write signals of U1 connect 8 pin and 13 pin of U10.10 pin of U10 and 11 pin connect 11 pin of 11 pin of U3 and U4 respectively to realize that operation is deposited in contracting of U4 to U3.U3, U4 (SN74S373JB) is a latch, their 3,4,7,8,13,14,17,18 pin connect the 0-7 pin of single-chip microcomputer P0 mouth respectively, their 2,5,6,9,12,15,16,19 meet U5 respectively, and the 1-9 pin of U6 (ULN2803) is used to latch the data from single-chip microcomputer P0 output, and give U5 simultaneously respectively, U6 drives chip for amplifying, and the signal of their output is directly used in the break-make of control compound transistor Q1-Q16, the just break-make of control point duration and degree of heating positive voltage.The break-make on the public ground of igniter head is by metal-oxide-semiconductor Q18 control, and the break-make of Q18 is by 14 foot control systems of single-chip microcomputer, indirect the Q17 triode amplify.At detected state, Q18 opens circuit.The triode of detected passage correspondence is connected, and remaining is closed, if connect normally, then single-chip microcomputer 15 pin can be high level, otherwise are low level.

So can produce very big electric current because the resistance of this igniter head is very little in the moment of lighting a fire, in order to reduce the influence of the big electric current of igniter head to system power supply, we have specially added two big electric capacity (C26 among Fig. 6 and C27).

External interface

Address toggle switch (J7 among Fig. 7); CAN bus and power supply input (J5 among Fig. 7 and J6); Ignition circuit output (J1 among Fig. 6 and J2); Ignition circuit common port input (J4 among Fig. 7).

Claims

1. igniting fireworks control method, it is characterized in that whole system is divided into two parts, be graphical arranging system and set off control system, arranging system carries out required fireworks kind of setting off, quantity, set off the definition of time, and the distribution of corresponding IGNITION CONTROL point numbering, the igniting that RACS then is responsible for implementing according to the layout table control point seted off; Graphical arranging system is a main shaft with audio volume control and reproduction time, and editor takes out the audio volume control timing node that the fireworks object that will set off is dragged and dropped into appointment from the fireworks storehouse, and system generates fireworks actual durations of ignition of setting off automatically; Concrete grammar is: open the audio file of need playing in system, system carries out waveform analysis to this audio file, the pairing waveform of this audio file that draws-time contrast figure, and obtain the required foundation of igniting fireworks layout: waveform-time is with reference to main shaft; In system, play this audio file, gather ignition time point, identify with graphical symbol according to the rhythm and the artistic conception of audio frequency; After the ignition time point collection is finished, from the fireworks database, the graphical symbol of this less important fireworks object of setting off of sign is dragged and dropped into the ignition time point of appointment, can set simultaneously lead-in wire, rise time, the effect time attribute of these fireworks, system generates fireworks actual durations of ignition of setting off according to these attributes automatically; After all ignition time points are all set and finished, preserve marshal data; At last these marshal data are downloaded in the igniting fireworks controller, the igniting fireworks controller will generate corresponding with this layout duration of ignition-address code table of comparisons, implement igniting fireworks according to this table content then and accurately control.

2. igniting fireworks control system is characterized in that setting off control system and is made up of four parts: i.e. audio analysis processor, set off main control system, hub and IGNITION CONTROL machine; Set off main control system by 6.4 cun TFT liquid crystal displays, keyboard scan, Industry Control mainboard and contain 1 Ethernet interface and 2 RS-232 interfaces, form by wire module, wireless module, setting off main control system is the core of whole system, it is the carrier of setting off control software, it receives the audio synchronous signal that sends over from the audio frequency processor by communication module Ethernet/802.11 wireless networks, synchro system is seted off the control time, and sends the IGNITION CONTROL instruction by another group communication module can bus module/general radio frequency module to hub; Or receive artificial ignition order by the man-machine interface of setting off main control system, send firing command to hub; Hub is made up of wire module CAN bus module or telecommunication module and 1 wireless module general radio frequency module hub integrated circuit board, 2, be used for connecting and set off main control system and IGNITION CONTROL machine, as network trunk and separation, be responsible for setting off the data transmission between main control system and the IGNITION CONTROL machine; Ignition controller provides wired communication interface, accepts and respond the control command that hub forwards; Igniter head interface of ignition controller directly connects the lead of electronic ignition head, after ignition controller receives firing command, send initial firing current to respective channel, lights a fire; The audio frequency processor is made up of 6.4 cun TFT liquid crystal displays, keyboard scan, Industry Control mainboard, wire communication module or wireless communication module, the audio frequency processor provides audio frequency to play and audio signal is extracted, carry out the selection of two kinds of patterns by man-machine interface, the wireless signal strength monitoring is provided simultaneously; Audio-frequency play mode, the audio frequency processor send stereophonic signal to audio output interface, in synchronizing time point to setting off main control system transmitting time synchronizing information; The audio extraction pattern is then extracted audio signal by audio input interface and the synchronizing information of extracting is sent to by communication module and sets off main control system, realize audio frequency play and set off be controlled at temporal fully synchronously.