CN102540762B - Digital ultraviolet exposure controller - Google Patents
Digital ultraviolet exposure controller Download PDFInfo
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- CN102540762B CN102540762B CN201210002941.XA CN201210002941A CN102540762B CN 102540762 B CN102540762 B CN 102540762B CN 201210002941 A CN201210002941 A CN 201210002941A CN 102540762 B CN102540762 B CN 102540762B
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Abstract
The invention relates to an exposure controller in a printing industry and a PCB (Printed Circuit Board) manufacturing industry. A digital ultraviolet exposure controller based on a single chip technology comprises an ultraviolet sensor and a single chip, wherein the ultraviolet sensor is mounted in an exposure box; an output signal of the ultraviolet sensor is switched into the single chip through an analog/digital converter; an exposure time setting switch, an exposure control switch and a display module are all connected with the single chip; the single chip is connected with an ultraviolet iodin gallium lamp through a driving control circuit; an input end of the driving control circuit is in controlled connection with the single chip; and a control switch of the driving control circuit is connected with a power circuit of the ultraviolet iodin gallium lamp. In the digital ultraviolet exposure controller, the ultraviolet sensor is utilized to detect the illumination of ultraviolet rays in real time and the single chip is used for calculating the exposure time of the illumination, so that the purpose of accurately controlling the exposure is achieved, the digitalization of the exposure is realized and the exposure of the PCB is more accurate.
Description
Technical field
The present invention relates to the manufacturing exposure controller of a kind of press and PCB, particularly relate to a kind of digital ultraviolet exposure controller based on singlechip technology.
Background technology
In press and PCB manufacturing industry, generally adopt ultraviolet exposure lamp to carry out graph transfer printing, the general time shutter is 20～120 seconds, but is all greater than 60 seconds the start-up time of UV-lamp, and is subject to the impact of the factor such as aging of supply voltage, environment temperature, fluorescent tube.Particularly, when repeated exposure, because the remaining temperature after the each exposure of quartz burner is all different, so the same time shutter, its exposure is not identical, so just directly has influence on the effect of graph transfer printing, and then has influence on making sheet quality.
The ultraviolet exposure apparatus according of using is at present all single countdown time controller, and user often need to adjust the time shutter according to extraneous factor, to reach correct exposure.Slightly incessantly meaning, will produce over-exposed or under-exposed phenomenon, affects making sheet effect.
Summary of the invention
The present invention is directed to prior art deficiency, a kind of digit explosure amount controller combining with UV sensor and singlechip technology is proposed, detect in real time ultraviolet illumination, time shutter while calculating this illumination by single-chip microcomputer, reach the object of accurate control exposure, realized the digitizing of exposure, the exposure that can make to print making sheet is more accurate.
The technical solution adopted in the present invention:
A kind of digital ultraviolet exposure controller, contain UV sensor, single-chip microcomputer, time shutter arranges switch, exposure gauge tap and time shutter display module, described UV sensor is arranged in exposure box, UV sensor output signal accesses single-chip microcomputer by analog to digital converter, the described time shutter arranges switch, exposure gauge tap is all connected with single-chip microcomputer with display module, described single-chip microcomputer connects ultraviolet hanger plate lamp by Drive and Control Circuit, the controlled connection single-chip microcomputer of described Drive and Control Circuit input end, the gauge tap of Drive and Control Circuit accesses ultraviolet hanger plate lamp electric power loop.
Described digital ultraviolet exposure controller, single-chip microcomputer adopts any one single-chip microcomputer of 51 series, analog to digital converter adopts 8 bits serial A/D converter, the input end of analog signal mouth of described UV sensor output signal access A/D converter, between the REF-of A/D converter and GND and power supply, be connected an adjustable resistance, described adjustable resistance output terminal connects the REF+ of A/D converter, the clock of A/D converter is connected the COM port of single-chip microcomputer with data output end port, its gating control port connects an interrupt request port of single-chip microcomputer, described exposure gauge tap two tip nodes connect respectively the reseting port of power supply and single-chip microcomputer, between another interrupt request port of described single-chip microcomputer and the gating port of display module or common port, being connected the time shutter arranges K switch 1, K2, K3, the gating port of described display module or common port connect a control port of single-chip microcomputer.
Described digital ultraviolet exposure controller, display module adopts and shows charactron, time shutter arranges switch and corresponds to three, be respectively K1, K2, K3, time shutter arranges K switch 1, K2, K3 connects respectively three control ports of single-chip microcomputer, three control ports of this of single-chip microcomputer simultaneously respectively and position, ten are connected with the common port of the demonstration charactron of hundred figure places, described position, ten are connected respectively a control port of single-chip microcomputer with the driving input end of the demonstration charactron of hundred figure places, the driving input end that shows charactron described in each connects power supply by pull-up resistor simultaneously.
Described digital ultraviolet exposure controller, analog to digital converter adopts integrated circuit LTC549, and single-chip microcomputer adopts AT89C2051.
Useful good effect of the present invention:
1, digital ultraviolet exposure controller of the present invention, is digitized to the control of exposure, and time shutter clock like precision is not subject to the impact of extraneous factor substantially.Reduce the rejection rate in making sheet process, improved the qualification rate of making sheet.Adopt UV sensor to detect in real time ultraviolet illumination, and convert thereof into voltage signal, through analog to digital converter, change digital signal into and be input in single-chip microcomputer, coordinate the program design of single-chip microcomputer, calculate the time shutter required when this illumination.Exposure=illumination * time now.And the method that can utilize countdown realizes successively decreasing of exposure.When reaching the exposure setting, start interrupt routine, stop exposure.
2, digital ultraviolet exposure controller of the present invention is a kind of novel exposure controller combining with UV sensor and singlechip technology.One-piece construction is simple, cost of manufacture is low, easy to use, easy to utilize.Can meet the exposure needs of press and circuit board making sheet industry, be widely used in the print circuit plates making design of printing industry and great, special secondary school universities and colleges.
Accompanying drawing explanation
Fig. 1: digital ultraviolet exposure controller block scheme of the present invention;
Fig. 2: digital ultraviolet exposure controller circuit theory diagrams of the present invention.
Embodiment
Embodiment mono-: referring to Fig. 1, digital ultraviolet exposure controller of the present invention, contain UV sensor, single-chip microcomputer, time shutter arranges switch, exposure gauge tap and time shutter display module, described UV sensor is arranged in exposure box, UV sensor output signal accesses single-chip microcomputer by analog to digital converter, the described time shutter arranges switch, exposure gauge tap is all connected with single-chip microcomputer with display module, described single-chip microcomputer connects ultraviolet hanger plate lamp by Drive and Control Circuit, the controlled connection single-chip microcomputer of described Drive and Control Circuit input end, the gauge tap of Drive and Control Circuit accesses ultraviolet hanger plate lamp electric power loop.
Described gauge tap can adopt relay, the control coil access Drive and Control Circuit of described relay, and the normally opened contact of relay accesses ultraviolet hanger plate lamp electric power loop.
Embodiment bis-: referring to Fig. 1, Fig. 2, the digital ultraviolet exposure controller of the present embodiment, different from embodiment mono-is, single-chip microcomputer adopts any one of 51 series, analog to digital converter adopts 8 bits serial A/D converter, the input end of analog signal mouth of UV sensor output signal access A/D converter, between the REF-of A/D converter and GND and power supply, be connected an adjustable resistance, described adjustable resistance output terminal connects the REF+ of A/D converter, the clock of A/D converter is connected the COM port of single-chip microcomputer with data output end port, its gating control port connects an interrupt request port of single-chip microcomputer, described exposure gauge tap two tip nodes connect respectively the reseting port of power supply and single-chip microcomputer, between another interrupt request port of described single-chip microcomputer and the gating port of display module or common port, being connected the time shutter arranges switch, the gating port of described display module or common port connect a control port of single-chip microcomputer.
Display module adopts and shows charactron, time shutter arranges switch and corresponds to three, be respectively K1, K2, K3, time shutter arranges three control ports that K switch 1, K2, K3 connect respectively single-chip microcomputer, three control ports of this of single-chip microcomputer are connected with the common port of the demonstration charactron of hundred figure places with individual, ten respectively simultaneously, described position, ten and the driving input end of the demonstration charactron of hundred figure places are connected respectively a control port of single-chip microcomputer, show that the driving input end of charactron connects power supply by pull-up resistor simultaneously described in each.
Embodiment tri-: referring to Fig. 1, and Fig. 2.The digital ultraviolet exposure controller of the present embodiment, UV sensor U1 adopts Germany to produce, and model is UV10T2E10L, measurement range: 210～450nm, output voltage: 0～5V simulating signal.8 bits serial A/D converter chip LTC549 or TLC548 that D/A converting circuit U2 adopts TIX to produce, can carry out serial communication by CLK, CS, DATA OUT tri-Tiaokou lines with general purpose microprocessor, controller.There is system clock and soft and hardware control circuit in 4MHz sheet, switching time the longest 17 μ s, the high conversion rate that TLC548 allows is 45500 times/S, TLC549 is 40000 times/S.Total be to the maximum ± 0.5LSB of offset error, typical power consumption value is 6mW.8 single chip computer AT 89C2051 of low-voltage, high-performance CMOS that single-chip microcomputer U3 adopts American ATMEL to produce, sheet include 2k bytes can be repeatedly erasable read-only program memory (PEROM) and the random data storer (RAM) of 128bytes, device adopts the high density of atmel corp, nonvolatile storage technologies to produce, compatibility standard MCS-51 order set, 8 central processing units of sheet built-in general-purpose and Flash storage unit.Charactron DS1, DS2, DS3 adopt 7 sections of high brightness charactrons of XSM-S4031A common cathode, and 8 word height 10.2mm, have brightness high, the feature that power consumption is little.
UV sensor U1 is connected with LTC549 D/A converting circuit U2, D/A converting circuit U2 is connected with AT89C2051 single-chip microcomputer U3, the section that the P1.0 of AT89C2051 single-chip microcomputer U3～P1.6 connects digital display tube DS1, DS2, DS3 shows, the position that P1.7, the P3.7 of AT89C2051 single-chip microcomputer U3, P3.4 connect digital display tube DS1, DS2, DS3 shows, shows that the driving input end of charactron connects power supply by pull-up resistor simultaneously described in each.Time shutter arranges K switch 1, K2, K3 and connects between the P3.3 of AT89C2051 single-chip microcomputer U3 and P1.7, P3.7, P3.4, P3.5 is connected with triode T1 by a resistance R 8, relay J adopts HRS4H-S type 6V DC relay, be connected to the emitter of power supply and triode T1, Control connects ultraviolet hanger plate lamp electric power loop.Exposure gauge tap K4 connects the 1st pin preset end of power supply+5V and AT89C2051 single-chip microcomputer U3.
UV sensor U1 changes ultraviolet illumination into voltage signal, and the output voltage of UV sensor U1 changes with ultraviolet illumination.When ultraviolet illumination changes to maximum from zero, its output voltage changes from 0～5V.The output terminal of UV sensor U1 is connected to the input end of LTC549 analog to digital conversion circuit U2, and LTC549 D/A converting circuit U2 is 8 bit serial analog conversion circuits, the voltage signal of 0～5V can be changed into a binary number, and resolution is 0.02V.
The output of LTC549 analog to digital conversion circuit U2 meets the serial input mouth P3.0 of single-chip microcomputer.Matching program design, is arranged respectively the exposure numerical value of individual, ten, hundred by K1, K2, K3, maximum arranges 999 exposure values, by charactron, is shown.Exposure gauge tap K4(startup/reset key): while pressing K4, P3.5 exports high level, relay J adhesive, normally closed contact J
1-1closure, UV-lamp energising, sends ultraviolet ray, starts exposure.Exposure subtracts 1, speed by setting value from individual position order: A/5 (second).The analog quantity (0～5V) of A: UV sensor U1 output, when A=5V(stablizes), the number of successively decreasing per second.When reducing to 000, P3.5 output low level, relay J discharges, normally closed contact J
1-1disconnect, UV-lamp power-off, end exposure, time delay 5 seconds, charactron shows last setting value, and can reset exposure, for exposure is next time got ready.
UV-lamp (UV lamp) is arranged in exposure box, can adopt PHILIPS company to produce, spectrum is mainly distributed between 315nm～450nm, main crest is 420nm, power is from 0.4KW～7KW, and its light fixture has the life-span long, arc stability, the advantages such as the high exposure of intensity quality is good, can select different power as required.Under use state of the present invention, circuit part is arranged in exposure box casing, and switch and demonstration charactron are arranged on exposure box panel, its executive circuit control linkage UV-lamp (UV lamp).
Claims (3)
1. a digital ultraviolet exposure controller, contain UV sensor, single-chip microcomputer, time shutter arranges switch, exposure gauge tap and time shutter display module, it is characterized in that: described UV sensor is arranged in exposure box, UV sensor output signal accesses single-chip microcomputer by analog to digital converter, the described time shutter arranges switch, exposure gauge tap is all connected with single-chip microcomputer with display module, described single-chip microcomputer connects ultraviolet hanger plate lamp by Drive and Control Circuit, the controlled connection single-chip microcomputer of described Drive and Control Circuit input end, the gauge tap of Drive and Control Circuit accesses ultraviolet hanger plate lamp electric power loop, single-chip microcomputer adopts any one single-chip microcomputer of 51 series, analog to digital converter adopts 8 bits serial A/D converter, the input end of analog signal mouth of described UV sensor output signal access A/D converter, between the REF-of A/D converter and GND and power supply, be connected an adjustable resistance, described adjustable resistance output terminal connects the REF+ of A/D converter, the clock of A/D converter is connected the COM port of single-chip microcomputer with data output end port, its gating control port connects an interrupt request port of single-chip microcomputer, described exposure gauge tap two tip nodes connect respectively the reseting port of power supply and single-chip microcomputer, between another interrupt request port of described single-chip microcomputer and the gating port of display module or common port, being connected the time shutter arranges K switch 1, K2, K3, the gating port of described display module or common port connect a control port of single-chip microcomputer.
2. digital ultraviolet exposure controller according to claim 1, it is characterized in that: display module adopts and shows charactron, time shutter arranges switch and corresponds to three, be respectively K1, K2, K3, time shutter arranges K switch 1, K2, K3 connects respectively three control ports of single-chip microcomputer, three control ports of this of single-chip microcomputer simultaneously respectively and position, ten are connected with the common port of the demonstration charactron of hundred figure places, described position, ten are connected respectively a control port of single-chip microcomputer with the driving input end of the demonstration charactron of hundred figure places, the driving input end that shows charactron described in each connects power supply by pull-up resistor simultaneously.
3. digital ultraviolet exposure controller according to claim 1, is characterized in that: analog to digital converter adopts integrated circuit LTC549, and single-chip microcomputer adopts AT89C2051.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210002941.XA CN102540762B (en) | 2012-01-06 | 2012-01-06 | Digital ultraviolet exposure controller |
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| CN201210002941.XA CN102540762B (en) | 2012-01-06 | 2012-01-06 | Digital ultraviolet exposure controller |
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| CN102540762A CN102540762A (en) | 2012-07-04 |
| CN102540762B true CN102540762B (en) | 2014-01-15 |
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| CN108051986B (en) * | 2017-12-26 | 2020-04-14 | 重庆渝州印务厂 | High-efficient sunning trigger |
| CN110401997B (en) * | 2019-07-26 | 2021-11-26 | 张兢桐 | Indoor myopia prevention and control lighting system based on controllable ultraviolet light |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202443246U (en) * | 2012-01-06 | 2012-09-19 | 新乡医学院 | Digital ultraviolet exposure quantity controller |
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| CN2184198Y (en) * | 1993-11-04 | 1994-11-30 | 厉树忠 | Automatic timing tester-controller for light exposure |
| CN201035369Y (en) * | 2007-05-24 | 2008-03-12 | 天津三环纺织印染公司 | Micro computer controlling exposure machine |
| CN201194067Y (en) * | 2008-02-27 | 2009-02-11 | 芯硕半导体（中国）有限公司 | Exposure control system for direct-writing photo-etching machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202443246U (en) * | 2012-01-06 | 2012-09-19 | 新乡医学院 | Digital ultraviolet exposure quantity controller |
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Inventor after: Dong Bingchao Inventor after: Zhao Feng Inventor after: Liang Yunzhen Inventor after: Shen Jiefen Inventor after: Qin Xin Inventor after: Zhao Heyun Inventor after: Li Chenxi Inventor before: Dong Bingchao Inventor before: Liang Yunzhen Inventor before: Shen Jiefen Inventor before: Qin Xin Inventor before: Zhao Heyun Inventor before: Li Chenxi |
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Free format text: CORRECT: INVENTOR; FROM: DONG BINGCHAO LIANG YUNZHEN SHEN JIEFEN QIN XIN ZHAO HEYUN LI CHENXI TO: DONG BINGCHAO ZHAO FENG LIANG YUNZHEN SHEN JIEFEN QIN XIN ZHAO HEYUN LI CHENXI |
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