CN104254179B - A kind of control method of LED automatic synchronization strobe apparatus - Google Patents
A kind of control method of LED automatic synchronization strobe apparatus Download PDFInfo
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- CN104254179B CN104254179B CN201410445221.XA CN201410445221A CN104254179B CN 104254179 B CN104254179 B CN 104254179B CN 201410445221 A CN201410445221 A CN 201410445221A CN 104254179 B CN104254179 B CN 104254179B
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Abstract
A kind of LED automatic synchronization strobe apparatus and control method thereof, this device includes rotary encoder, LED stroboscopic lamp and controller, controller includes power module, MCU module, input interface and output interface, MCU module includes single-chip microcomputer and peripheral circuit, rotary encoder is connected with single-chip microcomputer external interrupt pin by input interface, the I/O pin of single-chip microcomputer is connected with LED stroboscopic lamp by output interface, MCU module is all connected with power module with LED stroboscopic lamp, this device triggers the external interrupt of single-chip microcomputer automatically by rotary encoder Z signal, opened and closed LED by single-chip microcomputer again and realize stroboscopic function, this LED automatic synchronization strobe apparatus and control method thereof, its flashing rate is automatically adjusted, the stability of synchronization is good, observation effect is good.
Description
Technical field
The present invention relates to LED strobe apparatus and the control method thereof of quality for detecting leaflet image.
Background technology
In printing process, in order to detect the quality of the leaflet image of High Speed Transfer, the mode generally using the leaflet image in the illumination motion of strobe apparatus instant igniting realizes, and LED has that sturdy and durable, low in energy consumption, drive circuit is simple and the advantage such as length in service life, it it is the more satisfactory luminous body as strobe apparatus.Strobe apparatus on printing press is that the principle utilizing visual persistence phenomenon is to arrange the flashing rate of strobe apparatus, the transfer rate of such as leaflet is 300CM each second, and a length of 10CM of every width pattern, i.e. flow through 30 width patterns each second, the flashing rate adjusting strobe apparatus is to glisten each second 30 times, that is between twice adjacent flash of light of strobe apparatus, just 1 width pattern is flow through, and what every width pattern was just as, so flash lamp of strobe apparatus beats the same position in identical patterns every time, although making leaflet High Speed Transfer, but looking seems slowly to move or geo-stationary, the simultaneous observation of the leaflet image of High Speed Transfer can be realized, this visual persistence phenomenon can make printer be clearly observed current leaflet picture quality situation.
The Chinese utility model patent of Patent No. ZL200620041431.3; disclose the light emitting diode stroboscopic lamp for detecting leaflet picture quality and drive circuit thereof; as shown in Figure 1 and Figure 2; in order to realize the stroboscopic function of light emitting diode, include for controlling the drive circuit of this light emitting diode stroboscopic lamp: frequency adjustment circuit 21, pulse shaping circuit 22, voltage conversion circuit 23, ON-OFF control circuit 24 and protection circuit 25.This drive circuit use pure hardware implementation, and the regulation of its frequency be manually press or sprung push buttons S1, be turned on and off switch S2 and regulation potentiometer W resistance realize.
Problem of the prior art is: the flashing rate of LED strobe apparatus uses manually regulation, and in actual mechanical process, manually regulation is often it is difficult to ensure that be adjusted to flashing rate accurately, and the stability of synchronization is poor, and observation effect is the best.
Summary of the invention
The technical problem to be solved in the present invention is to provide the LED strobe apparatus that a kind of flashing rate is automatically adjusted, the stability of synchronization is good, observation effect is good.
The technical solution of the present invention is, a kind of LED automatic synchronization strobe apparatus is provided, it is characterized in that: include rotary encoder, LED stroboscopic lamp and controller, described controller includes power module, MCU module, input interface and output interface, MCU module includes single-chip microcomputer and peripheral circuit, rotary encoder is connected with single-chip microcomputer external interrupt pin by input interface, the I/O pin of single-chip microcomputer is connected with LED stroboscopic lamp by output interface, and MCU module is all connected with power module with LED stroboscopic lamp.
The invention have the advantages that
The flashing rate source of this strobe apparatus is rotary encoder Z signal, motor every revolution is through initial point, rotary encoder is issued by a Z signal, motor every revolution drives printing plate cylinder to turn around, and printing plate cylinder turns around and just pulls out a width pattern, flows through a width pattern between twice Z signal of such rotary encoder, and rotary encoder Z signal is automatically to trigger, overcoming manual regulating frequency and can produce the defect of error, the stability of synchronization is good, and observation effect is good.
As arranging further, described LED stroboscopic lamp includes multiple LED, multiple LED connection in series-parallel composition LED dot matrix.Arranging LED dot matrix makes light source higher, beneficially the observation of leaflet image.
As arranging further, described controller also includes key-press module, and key-press module includes moving button on the ON/OFF button of LED stroboscopic lamp, exposure position and exposure position moves down button, time of exposure adds button and time of exposure subtracts button.Above-mentioned button is set, can need to be turned on and off LED stroboscopic lamp, adjust exposure position and time of exposure according to user.
Another technical problem that the invention solves the problems that is to provide the control method of a kind of LED automatic synchronization strobe apparatus using rotary encoder Z signal as frequency source.
Another technical solution of the present invention is to provide the control method of a kind of LED automatic synchronization strobe apparatus, and it comprises the following steps:
(1) detection input interface signal, this input interface signal is rotary encoder Z signal, if rotary encoder Z signal being detected, then enters step (2), again detects if it is not, then return step (1)；
(2) described encoder Z signal triggers single-chip microcomputer external interrupt, and single-chip microcomputer starts internal delay time program, starts timing；
(3) judge whether delay time arrives the time needed for exposure position, the most then enter step (4), rejudge if it is not, then return step (3)；
(4) delay procedure terminates, lightening LED lamp；
(5) single-chip microcomputer restarts internal delay time program；
(6) judge whether delay time arrives the time of exposure of setting, the most then enter step (7), rejudge if it is not, then return step (6)；
(7) delay procedure terminates, and closes LED；
(8) step (1) is returned；
As arranging further, after step (3) judges that delay time does not arrives the time needed for exposure position, move button on exposure position to be judged or exposure position moves down whether button is pressed, if, just return step (3) after also adjusting the time needed for arriving exposure position to rejudge, rejudge if it is not, the most directly return step (3).This setting makes the time needed for arriving exposure position to be adjusted.
As arranging further, before lightening LED lamp, the state of the ON/OFF button of LED stroboscopic lamp to be judged, if the ON button of LED stroboscopic lamp is pressed, then lightening LED lamp, if it is not, then return step (1).This setting just can be lit under making LED lamp the most in working order.
As arranging further, after step (6) judges the time of exposure that delay time does not arrives setting, time of exposure to be judged adds button or time of exposure subtracts whether button is pressed, if, just return step (6) after the setting value of time of exposure to be adjusted to rejudge, rejudge if it is not, the most directly return step (6).This setting makes time of exposure to be adjusted.
Accompanying drawing illustrates:
Fig. 1 is the drive circuit block diagram of existing LED stroboscopic lamp；
Fig. 2 is the driving circuit principle figure of existing LED stroboscopic lamp；
Fig. 3 is the scheme of installation of the present invention；
Fig. 4 is the functional-block diagram of the present invention
Fig. 5 is the electrical schematic diagram of the present invention；
Fig. 6 is the control flow chart of the present invention；
In prior art diagram: 21-frequency adjustment circuit, 22-pulse shaping circuit, 23-voltage conversion circuit, 24-ON-OFF control circuit, 25-protection circuit, S1-button, S2-button, W-potentiometer.
In figure of the present invention: 1-LED stroboscopic lamp, 2-installing rack, 3-rotary encoder, 4-MCU module, 5-power module, 6-input interface, 7-output interface, 8-photoelectrical coupler, 9-audion, 10-key-press module, 11-rotary encoder Z signal, 12-chromatography probe bracket, 13-leaflet, 14-printing plate cylinder, 15-version roll drive motor, 16-three-terminal voltage-stabilizing chip, 17-single-chip microcomputer.
Detailed description of the invention
Below in conjunction with the accompanying drawings, and in conjunction with the embodiments the present invention is described further.
Embodiment:
nullSuch as Fig. 3、Shown in Fig. 4，This LED automatic synchronization strobe apparatus includes rotary encoder 3、LED stroboscopic lamp 1 and controller，Described controller includes power module 5、MCU module 4、Input interface 6 and output interface 7，Chromatography probe bracket 12 is provided with the installing rack 2 that can move left and right，LED stroboscopic lamp 1 and controller are fixed on installing rack 2 and can move left and right on chromatography probe bracket 12，Realize the location of observation place horizontal to leaflet 13，Printing plate cylinder 14 is driven by version roll drive motor 15，Version roll drive motor 15 is with rotary encoder 3，Version roll drive motor 15 often revolves and turns around through origin position，Rotary encoder 3 all can trigger motor initial point signal i.e. encoder Z signal 11 automatically，Version roll drive motor 15 rotate an astragal move printing plate cylinder 14 rotation turn around，So origin position of version roll drive motor 15 is just corresponding with the origin position of printing plate cylinder 14，Namely rotary encoder 3 can be with the origin position of Real-time Feedback printing plate cylinder 14，And printing plate cylinder 14 every revolution can pull out a width pattern，So flow through a width pattern between twice Z signal of rotary encoder，That is between twice adjacent flash of light of LED stroboscopic lamp 1，Just a width pattern is flow through on printing press，And what the image of every width pattern was just as，So each flash lamp all beats the same position in identical patterns，Although making leaflet 13 High Speed Transfer，But looking seems slowly to move or geo-stationary，This visual persistence phenomenon can make printer be clearly observed current leaflet picture quality situation，Achieve automatic synchronization stroboscopic function truly.
nullAs described in Figure 5，MCU module 4 includes single-chip microcomputer 17 and peripheral circuit，Single-chip microcomputer 17 model is 80C2051，The peripheral circuit of single-chip microcomputer 17 includes crystal oscillating circuit and reset circuit，Rotary encoder Z signal 11 is received input interface 6 and is connected with the external interrupt pin P3.2 of single-chip microcomputer 17 by photoelectrical coupler 8，8 buffer actions of photoelectrical coupler，The interference between the superior and the subordinate's circuit can be avoided，The I/O pin P1.0 of single-chip microcomputer 17 is connected with LED stroboscopic lamp 1 after receiving output interface 7 by audion 9，Audion 9 electrification stream amplification，The load-carrying ability of outfan can be improved，For driving LED dot matrix，MCU module 4 is all connected with power module 5 with LED stroboscopic lamp 1，Power module 5 includes three-terminal voltage-stabilizing chip 16 and the filter capacitor that model is L7805CV，Different running voltages is provided for MCU module 4 and LED stroboscopic lamp 1.
After using the LED automatic synchronization strobe apparatus of said structure, using rotary encoder Z signal 11 as the frequency source of this strobe apparatus, rotary encoder Z signal 11 is automatically to trigger, and eliminates manual regulating frequency and can produce the defect of error, accurately achieves automatic synchronization stroboscopic function.
As arranging further, described LED stroboscopic lamp 1 includes multiple LED, multiple LED connection in series-parallel composition LED dot matrix.Arranging LED dot matrix makes light source higher, beneficially the observation of leaflet image.
As arranging further, described controller also includes key-press module 10, key-press module 10 to include on the ON/OFF button of LED stroboscopic lamp 1, exposure position moving button and exposure position moves down button, time of exposure adds button and time of exposure subtracts button.The ON button of LED stroboscopic lamp 1 is pressed, show that LED stroboscopic lamp 1 is in running order, LED is controlled by the I/O pin P1.0 of available single-chip microcomputer, the OFF button of LED stroboscopic lamp 1 is pressed, show that LED stroboscopic lamp 1 is in off position, LED is controlled by the I/O pin P1.0 that cannot use single-chip microcomputer, thus can need to be turned on and off LED stroboscopic lamp 1 according to user, moving button and exposure position on exposure position and move down button for adjusting exposure position, time of exposure adds button and time of exposure subtracts button for adjusting time of exposure.
As shown in Figure 6, the control method also providing for a kind of LED automatic synchronization strobe apparatus of the present invention, it comprises the following steps:
(1) detection input interface signal, this input interface signal is rotary encoder Z signal, if rotary encoder Z signal being detected, then enters step (2), again detects if it is not, then return step (1)；
(2) described rotary encoder Z signal triggers single-chip microcomputer external interrupt, and single-chip microcomputer starts internal delay time program, starts timing；
(3) judge whether delay time arrives the time needed for exposure position, the most then enter step (4), rejudge if it is not, then return step (3)；
(4) delay procedure terminates, lightening LED lamp；
(5) single-chip microcomputer restarts delay procedure；
(6) judge whether delay time arrives the time of exposure of setting, the most then enter step (7), rejudge if it is not, then return step (6)；
(7) delay procedure terminates, and closes LED；
(8) step (1) is returned；
The above-mentioned time needed for arrival exposure position refers to, when rotary encoder Z signal 11 feeds back the initial point signal of printing plate cylinder 14, it it is the initial position of a width pattern, now rotary encoder Z signal 11 triggers the external interrupt pin P3.2 of single-chip microcomputer 17, but now LED stroboscopic lamp 1 is the most non-lit up, single-chip microcomputer 17 starts timer internal and starts timing, LED stroboscopic lamp 1 is just lighted after time delay a period of time, now the LED stroboscopic lamp 1 dozen position on this width pattern is referred to as exposure position, it is referred to as arriving the time needed for exposure position by the initial position of this width pattern to exposure position elapsed time.
As arranging further, after step (3) judges that delay time does not arrives the time needed for exposure position, move button on exposure position to be judged or move down whether button is pressed, if, just return step (3) after also adjusting the time needed for arriving exposure position to rejudge, rejudge if it is not, the most directly return step (3).This setting makes the time needed for arriving exposure position to be adjusted.
As arranging further, before lightening LED lamp, the state of the ON/OFF button of LED stroboscopic lamp to be judged, if the ON button of LED stroboscopic lamp is pressed, then lightening LED lamp, if it is not, then return step (1).This setting just can be lit under making LED the most in working order.
As arranging further, after step (6) judges the time of exposure that delay time does not arrives setting, time of exposure to be judged adds button or time of exposure subtracts whether button is pressed, if, just return step (6) after the setting value of time of exposure to be adjusted to rejudge, rejudge if it is not, the most directly return step (6).This setting makes time of exposure to be adjusted.
Claims (4)
1. a control method for LED automatic synchronization strobe apparatus, it comprises the following steps:
(1) detection input interface signal, this input interface signal is rotary encoder Z signal, if rotary encoder Z signal being detected, then enters step (2), again detects if it is not, then return step (1)；
(2) described rotary encoder Z signal triggers single-chip microcomputer external interrupt, and single-chip microcomputer starts internal delay time program, starts timing；
(3) judge whether delay time arrives the time needed for exposure position, the most then enter step (4), rejudge if it is not, then return step (3)；
(4) delay procedure terminates, lightening LED lamp；
(5) single-chip microcomputer restarts internal delay time program；
(6) judge whether delay time arrives the time of exposure of setting, the most then enter step (7), rejudge if it is not, then return step (6)；
(7) delay procedure terminates, and closes LED；
(8) step (1) is returned.
The control method of a kind of LED automatic synchronization strobe apparatus the most according to claim 1, it is characterized in that: after step (3) judges that delay time does not arrives the time needed for exposure position, move button on exposure position to be judged or exposure position moves down whether button is pressed, if, just return step (3) after also adjusting the time needed for arriving exposure position to rejudge, rejudge if it is not, the most directly return step (3).
The control method of a kind of LED automatic synchronization strobe apparatus the most according to claim 1, it is characterized in that: before step (4) lightening LED lamp, the state of the ON/OFF button of LED stroboscopic lamp to be judged, if the ON button of LED stroboscopic lamp is pressed, then lightening LED lamp, if it is not, then return step (1).
The control method of a kind of LED automatic synchronization strobe apparatus the most according to claim 1, it is characterized in that: after step (6) judges the time of exposure that delay time does not arrives setting, time of exposure to be judged adds button or time of exposure subtracts whether button is pressed, if, just return step (6) after the setting value of time of exposure to be adjusted to rejudge, rejudge if it is not, the most directly return step (6).
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| CN104703354B (en) * | 2015-03-18 | 2017-11-17 | 上海镭芯微电子有限公司 | The LED stroboscopics lamp control system and control method controlled with automatic raising frequency and state |
| CN106658859B (en) * | 2017-01-09 | 2019-01-01 | 万长林 | A kind of high-precision LED frequency modulation system and LED frequency modulation lamp |
| CN206452574U (en) * | 2017-01-09 | 2017-08-29 | 万长林 | A kind of high-precision LED frequency modulation systems and LED frequency modulation lamps |
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| CN2899386Y (en) * | 2006-04-28 | 2007-05-09 | 府根深 | Light-emitting diodes flash light for inspecting printing image and its driving circuit |
| CN201177205Y (en) * | 2008-04-07 | 2009-01-07 | 李日梅 | Large power LED stroboscope |
| CN202110149U (en) * | 2011-05-31 | 2012-01-11 | 上海智大电子有限公司 | Stroboscope |
| US9095014B2 (en) * | 2012-06-07 | 2015-07-28 | Wellsino Electric Co., Ltd | LED light string and control method thereof |
| CN103196917B (en) * | 2013-03-13 | 2015-08-19 | 同济大学 | Based on online roll bending material surface blemish detection system and the detection method thereof of CCD line-scan digital camera |
| CN203759399U (en) * | 2013-06-07 | 2014-08-06 | 深圳光华印制有限公司 | Constant current stroboscopic LED light source system |
| CN204104183U (en) * | 2014-09-03 | 2015-01-14 | 宁波欣达印刷机器有限公司 | A kind of LED automatic synchronization strobe apparatus |
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