CN2890831Y

CN2890831Y - Ignition controller for fireworks

Info

Publication number: CN2890831Y
Application number: CNU2006200498041U
Authority: CN
Inventors: 彭军; 颜斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-01-13
Filing date: 2006-01-13
Publication date: 2007-04-18
Anticipated expiration: 2016-01-13

Abstract

The utility model relates to a firework inflaming controller, which provides a plurality of CAN bus interfaces, multi-groups of address dialing switches and a plurality of inflaming terminal interfaces, wherein the inflaming controller connects with a collecting tray through the CAN bus interfaces and directly connects with other inflaming controller through CAN interfaces. The address dialing switches enable the inflaming controller to unify addresses, and the inflaming interfaces directly connect with an electronic inflaming terminal wire. The master control CPU of the circuit is a single chip micyoco of the S52 series and is connected with a CAN communication chip SJA1000, two latching devices and a plurality of IO ports and serial ports functions. The utility model supports a plurality of inflaming control master machines and a plurality of collecting trays to realize tree-shaped connection of the inflaming control system, can set off super firework and greatly promote the reliability of the system and the artistic expressive forces of the firework.

Description

Igniting fireworks IGNITION CONTROL machine

Technical field

The utility model relates to a kind of control device, is specifically related to a kind of igniting fireworks terminal IGNITION CONTROL machine.

Background technology

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 realized once igniting.Another is exactly the program-controlled electronic ignition installation, controls igniting by the pc machine usually, sets off sequence table and stores the pc machine into programmed, set off in the process, pc software reads sets off sequence table, and sending controling instruction is to the IGNITION CONTROL main frame, and the IGNITION CONTROL main frame is lighted a fire.Wherein, the hand-guided ignition installation is simple in structure, and the number of spots of being controlled is limited, 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, though can realize setting off of special efficacy pyrotechnics, but shortcoming is the pc machine to be infected by the virus easily, general-purpose operating system instability is easy to cause system crash, in addition, because this equipment does not have and the music direct correlation yet, therefore, set off and to accomplish with music synchronously, can not embody the artistic expression of music fireworks.

Summary of the invention

Technical problem to be solved in the utility model is exactly: solve the problem that above-mentioned prior art exists, and provide a kind of igniting fireworks IGNITION CONTROL machine, support a plurality of main control system and a plurality of hubs seted off, realize the tree-shaped connection of Iganition control system, guarantee that the multichannel multiple spot lights a fire simultaneously, can finish setting off of super-huge fireworks, greatly improve the reliability and the antijamming capability of system, that also greatly improves igniting fireworks views and admires aesthetic feeling and artistic expression.

The technical solution adopted in the utility model is: this igniting fireworks IGNITION CONTROL machine provides a plurality of CAN EBIs and multiple sets of address toggle switch, a plurality of igniter head interfaces, the IGNITION CONTROL machine is connected to hub by the CAN EBI, directly be connected with other IGNITION CONTROL machine by the CAN interface, the address toggle switch makes the ignition controller unified addressing, igniter head interface of IGNITION CONTROL machine directly connects an electronic ignition lead, the circuit master cpu is a single-chip microcomputer of S52 series, what link to each other with it is a CAN communication chip SJA1000 and two latch, there are a plurality of IO mouths to link to each other in addition and control the break-make of triode or metal-oxide-semiconductor with triode, also attach serial port function is arranged, SJA1000 is used to receive the data command on the CAN bus, order is resolved by single-chip microcomputer after receiving, computing, single-chip microcomputer is made corresponding IGNITION CONTROL then: single-chip microcomputer is imported data to two eight latch earlier, these data are used as the make-and-break signal of controlling each road triode, the public pole of cut-in point duration and degree of heating, realize igniting, enter the then metal-oxide-semiconductor disconnection of public pole of detected state, and the triode of controlling each road is connected successively, detect the voltage of output, whether normally determine to be communicated with.

Technical characterstic of the present utility model:

1) salvo technology

Because the time-delay characteristics of communication transmission, the single-point communication that conventional art is put multiple spot has a sequencing in time, 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, 100 nodes or more a plurality of node if light a fire simultaneously then differ more than the nearly 125ms 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 CONTROL machine 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 CONTROL machine 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, and our present IGNITION CONTROL machine adopts the MOS switching tube to add latch, directly write the phase of latching driving switch simultaneously by the single-chip microcomputer pin, thereby realize that a single point lighter 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, is started by the IGNITION CONTROL machine and sets 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 CONTROL machines, and whole system can be controlled 32*255*16 ignition point at most, can finish setting off of super-huge fireworks.

6) the utility model is supported a plurality of main control system and a plurality of hubs seted off, realize the tree-shaped connection of Iganition control system, greatly improved the reliability and the load-carrying ability of system, also helped system's interference free performance, that greatly improves igniting fireworks views and admires aesthetic feeling and artistic expression.

Description of drawings

Fig. 1 is the utility model theory diagram

Fig. 2, Fig. 3 implement circuit diagram for the utility model

The specific embodiment

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 structural 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. 3) 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. 2) 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. 3) 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. 3) 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; 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. 3).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. 3 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. 2 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. 2 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. 2).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 2, 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. 2 (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 TX0_SJA of U14 and the 19th pin RX0_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. 2 and C27).

External interface

Address toggle switch (J7 among Fig. 3); CAN bus and power supply input (J5 among Fig. 3 and J6); Ignition circuit output (J1 among Fig. 2 and J2); Ignition circuit common port input (J4 among Fig. 3).

Claims

1. igniting fireworks IGNITION CONTROL machine, it is characterized in that providing a plurality of CAN EBIs and multiple sets of address toggle switch, a plurality of igniter head interfaces, the IGNITION CONTROL machine is connected to hub by the CAN EBI, directly be connected with other IGNITION CONTROL machine by the CAN interface, the address toggle switch makes the ignition controller unified addressing, igniter head interface of IGNITION CONTROL machine directly connects an electronic ignition lead, the master cpu of 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, there are a plurality of IO mouths to link to each other in addition and control the break-make of triode or metal-oxide-semiconductor with triode, also attach serial port function is arranged, SJA1000 is used to receive the data command on the CAN bus, order is resolved by single-chip microcomputer after receiving, computing, single-chip microcomputer is made corresponding IGNITION CONTROL then: single-chip microcomputer is imported data to two eight latch earlier, these data are used as the make-and-break signal of controlling each road triode, the public pole of cut-in point duration and degree of heating, realize igniting, enter the then metal-oxide-semiconductor disconnection of public pole of detected state, and the triode of controlling each road is connected successively, detect the voltage of output, whether normally determine to be communicated with.